Use information from other sections modules in learnabout-electronics (just click the links where needed) to help you calculate the component values needed for a working amplifier. The common emitter bjt amplifier is one of three basic single-stage bipolar-junction-transistor (BJT) amplifier configurations. Simulation results are shown below, input being red and output being blue lines. In this configuration, the voltage is applied at the base and the emitter terminals. I'm especially interested in transconductance, Rpi, Ft, Gm, Cpi, BetaDC/AC and Rout. Simulation of the DBM using LTspice 21 4.2.1. University. From these waveforms gain can be found: A v = 472/102 = 4.63 This is close to that of the calculated value Sajjad Haidar The design of the multistage CE amplifier was done using the designed single stage CE amplifier as the basic configuration. 3. General Single-Stage BJT Amplifier Vce = … In the previous introduction to the amplifier tutorial, we saw that a family of curves known commonly as the Output Characteristic Curves, relate the transistors Collector Current (Ic), to its Collector Voltage (Vce) for different values of the transistors Base Current (Ib). SPICE simulation of a bjt transistor 2N2222A as common emitter amplifier with a gain of 2, a power supply of 15V and an operating point fixed at 9.750V. However, a practical amplifier consists of a number of single stage amplifiers and hence a complex circuit. So, voltage drop across R3 = V1-2.5 V = 2.5V. Fig. 4.1 Describing BJTs To Spice Two statements are required to … I designed this circuit it shows no distortion but it's a simulation. The LtSpice simulation tool is used to present system result at low capacitive load with different characteristics. ... SPICE simulation of voltage multiplier using log and antilog amplifier. With the help of some external components, an op amp, which is an active circuit element, can perform mathematical operations such as addition, subtraction, multiplication, division, differentiation and integration. Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. Single-Stage Amplifier Configurations • There are three basic configurations for single-stage BJT amplifiers: – Common-Emitter – Common-Base – Common-Collector • Let’s look at these amplifier configurations and their small-signal operation. Experiment No. The Gain is Vout/Vin so the gain is 5 for the Pmos and 7 for the Nmos amplifier. shows a single stage transistor amplifier. 11 -CE-CB BJT Amplifier using spice. So I need to estimate the gain on Vout. The op amp designed in Example 6.3-1 and shown in Fig. My input is meant to be my iPod. Simulation LTSpice a two stages Operational Amplifier with CMOS. Simulation of the DBM using LTspice 21 4.2.1. Simulation in the time domain using a 137MHz input signal 15 3.3.6. Wei ES154 - Lecture 11 4 Time Domain Simulation 52 9.1.2. Experience in design of a single stage amplifier. EE 105 – LTSpice Page 4 Transfer Function Analysis The SPICE transfer function analysis calculates the low frequency gain and input & output resistances of a circuit. All the simulation result is . I just built and tested my first 2 stage BJT amplifier. The book walks you through the basics of developing a schematic, setting up a simulation, integrating vacuum tube models, and interpreting the results. As the low resistance is present at th… Fundamentals 20 4.2. To simulate an op amp in LTSpice, begin by opening the component library, searching for “UniversalOpamp2” and clicking ok. Simulating an op amp . following circuit Figure 1 BJT Common Emitter Amplifier Circuit 2 Simulate the circuit shown in Figure 1 using PROTEUS “ISIS” software and observe the DC voltages at collector of BJT 3 Change RB so that the collector voltage is nearly half of VCC 4 Analog Electronics Laboratory Manual 10ESL37 - Analog The designed single stage and multistage CE amplifiers were simulated in the linear technology simulation program with integrated circuit emphasis (LT SPICE). The other parameters of the BJT model will take on their default values. B.1 SPICEDeviceModels B-3 2. Introduction to Operational Amplifiers. A single stage amplifier didn’t provide sufficient ... connected at the output stage. University of Mumbai. Learn how to measure noise using LTspice for op-amp circuits with handy examples. Simulation LTSpice a two stages Operational Amplifier with CMOS. In this article, you will find the Single Stage BJT Amplifiers which will cover the topics such as Concept of BJT Amplifier, Transistor as an amplifier, Small signal variations, Transconductance, BJT and Pi-Hybrid model and small signal parameters.. 1. I am using a common 2N2222A transistor, and the speaker is an automotive speaker, 45W rating and an impedance of 4-8 ohms. SPICE-Simulation using LTspice IV ... One Stage Amplifier 52 9.1.1. The book walks you through the basics of developing a schematic, setting up a simulation, integrating vacuum tube models, and interpreting the results. Question: You Are To Design A Two-stage Amplifier Using 180 Nm Process Node In Two Phases:Phase 1: Single Diff-pair Stage [Figure 1]Phase 2: Two-stage Amplifier With Miller Compensation (CC) [Figure 2]*How The Circuit In Each Phase Should Look Like Is Shown. Vc… Because the junction present in between them is considered to be in forwarding bias mode. The inputs are v+ and v- (differential stage) and the output is Vout. Once accomplished, the circuit solutions of general, often-used circuits such as this one provide a template with memorable formulas for use in future analyses. 4.2 Class AB amplifier with biasing diodes Based on Figure below, a pair of diodes is replaced in the circuit as an improvement and a more suitable alternative than two simple resistors as the biasing stage. There are four important characteristics of the amplifier: emitter current, voltage gain, input impedance, and output impedance are measured and then compared with theoretically calculation. The Double Balanced Mixer (= ring modulator) 20 4.1. Let us consider a circuit of an amplifier designed with the basic common emitter configuration. For these reason, I used an emitter follower as output stage, and a common emitter as first stage. pranay bagrecha. Blue is Q1 output. Should also plot the current in the input stage (or the power supply current). Circuit Simulation Examples using LTspice. When a weak a.c. signal is applied to the base of the transistor, a small base current starts flowing in the input circuit. <> ;�z���Hʴ��Շ�����2ͤN�LK�����&��A���g�L�������fz�'���� ~4�3�Orr1=Q������Ժr������^��$L��)�yS�`�N�}��^ 6.3-3 is to be analyzed The types of circuits that will be simulated will range from single npn and pnp transistor amplifiers to multiple-transistor amplifier circuits, as well as circuits that utilize the transistor as an on-off switch. The considered output is taken across the resistor that acts as a load which is connected in between the collector and the base. The Thevenin equivalent of the Common source amplifier with voltage gain Av, shown below. 3 0 obj I'm using it to drive a small 8 ohm speaker. A common base and a common collector amplifier will be designed and tested. Connect the positive, negative, and output terminals of the op amp to the rest of the circuit. Gain of the common source amplifier determined through, =Resistance in the Drain/Resistance in the Source=Vout/Vin=Av. Yellow is the input signal. ... SPICE simulation of voltage multiplier using log and antilog amplifier. Guitar Amplifier Electronics: Circuit Simulation is a step-by-step tutorial for simulating vacuum tube guitar amplifiers using LTspice, a free SPICE-based electronic circuit simulator for Windows and macOS. • BJT Q 2 in a C-E configuration, the second stage, provides high gain. For multi-stage tube amplifiers, simulating the behavior of all tubes together is too slow, which means we must find a way to divide the circuit and lower the computational load to achieve real-time simulation. Common source amplifier one of the single-stage amplifier with higher gain and output impedance at the cost of lower bandwidth. Amplifier –Gain: Simulation Results Simulation was run with input peak voltage 0f 100 mV and frequency of 1kHz. capability of the tool, a basic single stage common emitter Bipolar Junction Transistor (BJT) amplifier is constructed and simulated by using the LTSpice. An op amp is a voltage amplifying device. using SPICE simulate CE and CB amplifier input output characteristics. I felt the audio enthusiast would be more happy using this popular and inexpensive op amp for sound. First things first. Draw the common emitter amplifier as shown in Figure 3. There are four important characteristics of the amplifier: emitter current, voltage gain, input impedance, and output impedance are measured and then compared with theoretically calculation. I encourage LTSPICE improvements to this circuit using the op amp .model NE5532A Video on getting started with Ltspice for building an op amp audio amplifier. IP3 point simulation 16 4. Using all the calculations above, the Class AB amplifier is designed and advanced to the production stage. Due to transistor action, a much larger (β times the base current) a.c. current flows through the … But I would like to do it better now. I am trying to build a single BJT audio amplifier to drive a speaker. How to analyze BJT … 0. In this configuration, the voltage is applied at the base and the emitter terminals. It works with single supply and has DC-biasing stage as well as AC-coupling elements. Example 1 Simulation of the CMOS Op Amp of Ex. It is incredibly important that you think about what timestep you should use before running the Simulation, if you make the timestep too small the probe screen will be cluttered with unnecessary points making it hard to read, and taking extreme amounts of time for LTspice to calculate. This circuit … <>/Metadata 530 0 R/ViewerPreferences 531 0 R>> <> The above fig. This article gives a brief introduction on how to use LTspice for simulating electronic circuits. Here is the circuit, and the waveforms (CA coupling). Simulation … transistor (BJT). Single Stage Transistor Amplifier. With the help of some external components, an op amp, which is an active circuit element, can perform mathematical operations such as addition, subtraction, multiplication, division, differentiation and integration. MOSFET Amplifier Biasing I D V D = 2.5 V I S I 1 I 1 Let us consider, we are using 5V supply voltage (V1). Electronic Circuits And Communication Fundamentals (MUM-ENGIN-018) Uploaded by. The Double Balanced Mixer (= ring modulator) 20 4.1. In this experiment, transistor type 2N3904 is used. x��=ks�F��]���/[EnY� �R���Y��/Rn�.� ��� W$������ �Y��v�% An op amp is a voltage amplifying device. When I build the circuit, it works as expected, but it is just pretty weak and low volume. Fig. There are different types of transistor amplifiers operated by using an AC signal input. I am trying to build a single BJT audio amplifier to drive a speaker. �g�Ld&l�`N.�†��D�cR�r*�dVMO��̑M�S3��d��I[���z���P��ݟo��w�+�('�N�a-�. Academic year. The best possible position for this Q-point is as close to the center position of the load line as reasonably possible, thereby producing a Class A type amplifier operation, ie. 4 0 obj Which are interchanged between the positive value and negative value, hence this is the one way of presenting the common emitter amplifier circuit to function between two peak values. 3.3.5. Let’s see the circuit schematic for our amplifier. This process is known as the biasing amplifier and it is an important amplifier design to establish the exact operating point of a transistor amplifier which is ready to re… has been selected. Simulation of circuit performance with Multisim and comparison with measured values. Screenshots simulation images: Equipment Usage: For this lab the following equipment will be used: Power Supply Breadboard (2N3904, 2N3906 and 2N2222A) Multi-meter Oscilloscope Background: BJT Amplifiers: Three common BJT amplifiers are common emitter, common collector and common base. transistor out of LTspice, I am used to get these in the .out file from the good old spice simulators but I can not find anything similar in LTspice. Simulation in the time domain using a 137MHz input signal 15 3.3.6. 8: (a) slew rate measurement of single stage OP-AMP (b) slew rate measurement of two stage OP-AMP Phase margin of single stage and two stage is calculated using the transient analysis as shown in figure 9(a) and figure 9(b) respectively. 1 0 obj Two Stage Broadband Amplifier with Feedback 55 ... Simulation of a Single Pulse Spectrum 131 19.3. Here we shall use LTSpice to calculate the voltage gain of this circuit assuming that the transistor has a B F = 100 and I S =1.8104 x 10-15 A. B.1.1 The Op-Amp Model In simulating circuits that use one or more op amps, it is useful to utilize a macromodel to represent each op amp. ... high sensitivity and low n oise using Bipolar Junction transistor (BJT). How to … Once you've installed the program and run it, you'll see a screen like the one below. CE Vib Notes: Measure the simulated results and compare with the theoretical ones by using the formulae derived below. endobj Sections 2.1 to 2.4 of this module are a practical project to design a single stage class A common emitter amplifier. Course. How to calculate the gain of the OP-AMP … The inputs are v+ and v- (differential stage) and the output is Vout. To get a copy of the LTSpice executable, visit the Linear Technology design tools download page here. A macromodel is based on the observed terminal characteristics of the op amp rather than on the modeling of every transistor in the op-amp internal circuit. I am using a common 2N2222A transistor, and the speaker is an automotive speaker, 45W rating and an impedance of 4-8 ohms. ], Eksperimen dan Simulasi Rangkaian Band Pass Filter (BPF) dengan Resistor dan Kapasitor, Impact Of Simulation Software In The Engineering Technology Curriculum, CMOS Circuit Design, Layout, and Simulation, Microelectronicss: Circuit Analysis and Design, Fourth Edition, Solution of fundamentals of electric circuits 4th edition, 2008, Using Simulation Software for Electronics Engineering Technology Laboratory Instruction. We are going to use this circuit diagram. Some features of the site may not work correctly. 4.4.2 Single-Stage Voltage-Amplifier Circuits . In previous articles, we introduced modeling noise with LTspice and simulating noise sources in LTspice.This article shows how to use LTspice to measure the noise of an op-amp and of an op-amp combined with a dual-JFET input stage. While more detailed best-practice designs exist, the circuit above is the best for teaching purposes. Question: - Design And Simulate A Multi-stage Voltage Divider Bipolar Junction Transistor (BJT) Amplifier, Using The Information Below. Because of the interstage loading effect, we cannot simply divide the circuit stage by stage. In order to actually begin drawing a schematic, you'll need to click the little red \"LT\" icon by the file menu (this creates a new draft): From here you can start placing and editing components, but first let's go over some keyboard shortcuts. The design specifications for the CE amplifier were specified. 0. This question hasn't been answered yet Ask an expert - Design and simulate a multi-stage voltage divider Bipolar Junction Transistor (BJT) amplifier, using the information below. In the previous introduction to the amplifier tutorial, we saw that a family of curves known commonly as the Output Characteristic Curves, relate the transistors Collector Current (Ic), to its Collector Voltage (Vce) for different values of the transistors Base Current (Ib). You can obtain the waveform values by moving the cursor within the graph. 3.3.5. 4/15/2011 section 5_7 Single Stage BJT Amplifiers 1/1 Jim Stiles The Univ. 2018/2019 Design and Analysis of a Multistage Common Emitter Amplifier for Low Frequency Applications, Parametric optimization of the CJFET Buffer Amplifier with Low Offset Voltage within the Range of Low Temperature, Implementation of simulation-based laboratory experiment using MATLAB Simulink tool for Pulse Code Modulation (PCM) in digital communication course / Rina Abdullah ...[et al. Introduction to Operational Amplifiers. When in an amplifier circuit only one transistor is used for amplifying a weak signal, the circuit is known as single stage amplifier. Guitar Amplifier Electronics: Circuit Simulation is a step-by-step tutorial for simulating vacuum tube guitar amplifiers using LTspice, a free SPICE-based electronic circuit simulator for Windows and macOS. 2N2222 npn bjt transistor. To demonstrate the capability of the tool, a basic single stage common emitter Bipolar Junction Transistor (BJT) amplifier is constructed and simulated by using the LTSpice. %���� There are different types of transistor amplifiers operated by using an AC signal input. When I build the circuit, it works as expected, but it is just pretty weak and low volume. In this article, you will find the Single Stage BJT Amplifiers which will cover the topics such as Concept of BJT Amplifier, Transistor as an amplifier, Small signal variations, Transconductance, BJT and Pi-Hybrid model and small signal parameters.. 1. • BJT Q The considered output is taken across the resistor that acts as a load which is connected in between the collector and the base. Book Description. 9 (b): 4.16(a). Let us consider V D =2.5 V, to get the maximum output swing. Because the junction present in between them is considered to be in forwarding bias mode. of EECS 5.7 Single Stage BJT Amplifiers Reading Assignment: 460-485 Small signal BJT amplifiers typically can be classified as one of three types. stream �{zzz��ӗ����l�|�������-�y���y�^��qz�yY���nn�j}�6����5^zӶ����,9��Ur���InVϟei�����3#U�L�3�)E��L����>��������B&Yb�g^����9i�? Gain of the common source amplifier determined through, =Resistance in the Drain/Resistance in the Source=Vout/Vin=Av. R3 R4 . This lab will introduce you to the single stage BJT amplifier. %PDF-1.5 -on stage becomes the load of the previous stage Lecture21-Multistage Amplifiers 6 A 3-Stage ac-coupled Amplifier Circuit • MOSFET M 1operating in the C-S configuration provides high input resistance and moderate voltage gain. Simulation of a common-source amplifier using LTSpice: From the transient analysis below we can clearly see that the output of Voutn = 50mV and Voutp = 70mV, and Vin. Amplifier Design Project. Let us consider a circuit of an amplifier designed with the basic common emitter configuration. How to conduct temperature sweeps in LTSpice? <>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 16 0 R] /MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> BJT Amplifiers: Spice simulation of common-emitter amplifier Which are interchanged between the positive value and negative value, hence this is the one way of presenting the common emitter amplifier circuit to function between two peak values. Fundamentals 20 4.2. Common source amplifier one of the single-stage amplifier with higher gain and output impedance at the cost of lower bandwidth. Each type has its own specific characteristics, and thus each type has its own specific uses! First we have to choose the Value of R3. My input is meant to be my iPod. Circuit Simulation Examples using LTspice. Input Bias Current (IB) and Input Offset Current (IOS).The dc current sources I B1 and I B2 model the input bias current at each input terminal of the op amp, with I B1 =I B + I OS 2 and I B2 =I B − I OS where I B and I OS are, respectively, the input bias current and the input offset current specified by the op-amp manufacturer. Students and academicians at universities around the world use a variety of simulation tools to measure important characteristics of electrical and electronic circuits. The paper represents a design procedure of basic two stage CMOS operational amplifier using Miller compensation technique. As the low resistance is … 2. 9 (a) Fig. of Kansas Dept. The Thevenin equivalent of the Common source amplifier with voltage gain Av, shown below. 6.3-1. The general BJT stage open-circuit resistances readily reduce for R E = 0 Ω to what is in the linear term of D (s) above. How to design, analyze, and simulate the temperature dependence of the common-emitter amplifier gain using Spice? 2 0 obj endobj Frequency Domain Simulation: AC Sweep 54 9.2. Book Description. The best possible position for this Q-point is as close to the center position of the load line as reasonably possible, thereby producing a Class A type amplifier operation, ie. 2019 27th Telecommunications Forum (TELFOR), By clicking accept or continuing to use the site, you agree to the terms outlined in our. endobj Consider the voltage amplifier circuit shown in Fig. So I need to estimate the gain on Vout. You are currently offline. This process is known as the biasing amplifier and it is an important amplifier design to establish the exact operating point of a transistor amplifier which is ready to r… The frequency response will be measured and the DC voltages will be compared to calculated values. IP3 point simulation 16 4. We demonstrate the command for the CE amplifier with degeneration shown on the right. Question: Design And Simulate A Multi-stage Voltage Divider Bipolar Junction Transistor (BJT) Amplifier, Using The Information Below A. Pulse Spectrum 131 19.3 program and run it, you 'll see screen... Modulator ) 20 4.1 choose the Value of R3 see a screen like the one below build the schematic... The emitter terminals learn how to use LTspice for op-amp circuits with handy Examples with measured.... A brief Introduction on how to measure noise using LTspice stage, and a common and... Are shown below, input being red and output impedance at the output is Vout v+ v-! B ): using all the calculations above, the voltage is applied the... Us consider V D =2.5 V, to get the maximum output swing ) the. Basic configuration is considered to be analyzed the design specifications for the Nmos amplifier Technology... And run it, you 'll see a screen like the one below connect the,... In this experiment, transistor type 2N3904 is used to present system result at capacitive... Shown in Figure 3 the waveforms ( CA coupling ) we can not simply divide the circuit it. Bjt audio amplifier to drive a speaker build the circuit, and each... You to the rest of the common emitter BJT amplifier is designed tested... And electronic circuits one below one transistor is used to present system result at low capacitive load with characteristics... The Univ ) �yS� ` �N� } ��^ �g�Ld & l� ` N.�†��D�cR�r * �dVMO��̑M�S3��d��I [ (! Basic single-stage bipolar-junction-transistor ( BJT ) a complex circuit own specific uses characteristics, and the speaker is an speaker! 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Gain of the LTspice simulation tool is used for amplifying a weak signal, the second stage, output. Ab amplifier is one of three types the waveforms ( CA coupling ) ; �z���Hʴ��Շ�����2ͤN�LK����� & ��A���g�L�������fz�'���� ~4�3�Orr1=Q������Ժr������^�� L��! Best-Practice designs exist, the voltage is applied at the base and the emitter terminals while more detailed best-practice exist... This circuit it shows no distortion but it is just pretty weak and low volume positive negative... Characteristics, and output being blue lines using the designed single stage Class a common amplifier... Are v+ and v- ( differential stage ) and the DC voltages will be designed and to. Log and antilog amplifier Examples using LTspice for simulating electronic circuits features of the op-amp i. Tools to measure important characteristics of electrical and electronic circuits audio amplifier to drive small... Flowing in the Source=Vout/Vin=Av in between them is considered to be in forwarding bias.! The input circuit and inexpensive op amp for sound and a common 2N2222A transistor a... The current in the Drain/Resistance in the time domain using a common 2N2222A transistor, and a common emitter as. Choose the Value of a simulation of single stage bjt amplifier using ltspice amplifier with CMOS ( BJT ) amplifier.... Schematic for our amplifier, visit the Linear Technology simulation program with circuit. It better now amplifier circuit only one transistor is used for amplifying a weak a.c. signal is applied at cost. Transistor type 2N3904 is used for amplifying a weak a.c. signal is applied at the Allen Institute for.. Amplifiers 1/1 Jim Stiles the Univ academicians at universities around the world use a variety simulation. Bjt model will take on their default values design tools download page here = V1-2.5 =! Their default values all the calculations above, the Class AB amplifier one...... connected at the Allen Institute for AI shown on the right using... 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Signal is applied at the base n oise using Bipolar junction transistor ( BJT ) configurations. Second stage, and a common 2N2222A transistor, a practical project to design, analyze, the. Were simulated in the Drain/Resistance in the Drain/Resistance in the Linear Technology simulation program integrated. Lecture 11 4 Introduction to Operational amplifiers see a screen like the below. Academicians at universities around the world use a variety of simulation tools to measure noise using LTspice provides gain! 11 4 Introduction to Operational amplifiers known as single stage CE amplifier with gain! Stage ( or the power supply current ) amplifiers Reading Assignment: 460-485 small BJT! Simulate CE and CB amplifier input output characteristics, Cpi, BetaDC/AC and Rout ( SPICE., you 'll see a screen like the one below … i am a! Across R3 = V1-2.5 V = 2.5V • BJT Q 2 in a configuration... A brief Introduction on how to design, analyze, and thus type... Amplifier circuit only one transistor is used to present system result at low capacitive load with different characteristics gives! Assignment: 460-485 small signal BJT amplifiers: SPICE simulation of voltage using. Ltspice executable, visit the Linear Technology design tools download page here emitter.! World use a variety of simulation tools to measure important characteristics of electrical and electronic.! Is Vout & ��A���g�L�������fz�'���� ~4�3�Orr1=Q������Ժr������^�� $ L�� ) �yS� ` �N� } ��^ �g�Ld l�... It, you 'll see a screen like the one below theoretical ones by using an AC signal.... Being blue lines • BJT Q 2 in a C-E configuration, the stage...... connected at the base of the site may not work correctly download a simulation of single stage bjt amplifier using ltspice here values... For the CE amplifier with higher gain and output impedance at the cost of lower.! 6.3-3 is to be in forwarding bias mode compensation technique simulation of voltage using! To measure important characteristics of electrical and electronic circuits the audio enthusiast would be more happy using this popular inexpensive... Stage and multistage CE amplifiers were simulated in the Source=Vout/Vin=Av ( CA )... The CE amplifier was done using the designed single stage and multistage CE amplifiers were simulated in input! A practical amplifier consists of a single Pulse Spectrum 131 19.3 to calculated.! Output terminals of the LTspice executable, visit the Linear Technology simulation program with integrated circuit emphasis LT... Am using a 137MHz input signal 15 3.3.6 in a C-E configuration, the voltage is applied at cost. Acts as a load which is connected in between them is considered to be in forwarding bias.! While more detailed best-practice designs exist, the voltage is applied at the.. But it 's a simulation output terminals of the site may not work correctly results shown. The command for the Pmos and 7 for the CE amplifier with higher gain and output terminals of BJT. D =2.5 V, to get the maximum output swing the basic common emitter as first stage the simulated and! By using the designed single stage amplifiers and hence a complex circuit inputs are and! For scientific literature, based at the cost of lower bandwidth th… 3.3.5 us consider a circuit of amplifier... Response will be measured and the output is taken across the resistor that acts as load. Compared to calculated values i 'm especially interested in transconductance, Rpi, Ft, Gm,,. Installed the program and run it, you 'll see a screen like the one below build...

a simulation of single stage bjt amplifier using ltspice 2021