simulation of a superheterodyne receiver using pspice - School of ...

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Ref. [3] “Electronic Communication Techniques, Forth Edition” By Paul Young (Publ. Prentice Hall). Ref. [4] “Pspice for Windows, A Circuit Simulation Primer” By Roy W. Goody (Publ. Prentice Hall). Ref. [5] “Pspice for Windows, Volume 2, Operational Amplifiers & Digital Circuits” By Roy W. Goody (Publ. Prentice Hall). Ref. [6] “Electronic Devices, Fifth Edition” By Thomas L. Floyd (Publ. Prentice Hall). Ref. [7] “Radio Communication” By D. C. Green (Publ. Longman). Ref. [8] http://my.integritynet.com.au/purdic/am_rec.htm By Ian Purdie. Ref. [9] http://www.ezlink.com/~crash/parks/hetbasic.html#modulate Link: www.googgle.com APPENDIX C: SCALE SUFFIXES Symbol Scale Name f 10e-15 Femtop 10e-12 Picon 10e-9 Nanou 10e-6 Microm 10e-3 Millik 10e+3 Kilo- M 10e+6 Mega- G 10e+9 Giga- T 10e+12 Tera- APPENDIX D: SCHEMATICS & PROBES. Schematics: Fig. 3: Amplitude Modulator. Fig. 6: Single tuned RF amplifier. Fig. 9: FET circuit for obtaining transfer characteristic. Fig. 12: Local Oscillator (Amplifier Stage). Fig. 15: Local Oscillator Beta Network. 50
Fig. 18: Local Oscillator (Amplifier stage and Beta network). Fig. 21: Mixer circuit. Fig. 24: Double tuned IF amplifier. Fig. 26: Diode rectification. Fig. 29: AM detector circuit with AGC. Fig. 31: Audio amplifier. Fig. 35: Hierarchy main block. Fig. 36: Hierarchy middle block. Fig. 37: Block 1 – AM generator. Fig. 38: Block 2 – RF amplifier. Fig. 39: Block 3 – Mixer. Fig. 40: Block 4 – Local oscillator. Fig. 41: Block 5 – IF1. Fig. 42: Block 6: IF 2. Fig. 43: Block 7 – AM detector & AGC Fig. 44: Block 8 – Audio amplifier. Probes: Fig. 4: The AM signal. Fig. 5: Enlarged section of the AM spectrum. Fig. 7: RF amplifier response. Fig. 8: Zoom in to measure bandwidth. Fig. 11: Transfer characteristic of FET. Fig. 14: Input and Output Voltages of Amplifier Stage of LO. Fig.17: AC sweep of LO feedback network. Fig. 19: LO output. Fig.20: Spectrum of Local Oscillator Output. Fig. 22: Mixer Output. Fig. 23: Mixer Spectrum. Fig. 25: Zooming in on response to measure BW of IF stage. Fig. 27: Rectified AM signal. Fig. 28: Enlarged section of diode rectification. Fig. 30: AGC and audio signals. Fig. 32: Audio amplifier input and output voltage waveforms. Fig. 33: Audio amplifier load power and average load power. Fig. 34: Load current of audio amplifier. Fig. 45: AM and RF spectra. Fig. 46: AM signal in superhetrodyne receiver. Fig. 47: Mixer spectrum. Fig. 48: IF spectra. Fig. 49: AM detection and audio spectrum. Fig. 50: Modulating frequency in AM detector spectrum. Fig. 51: Modulating frequency in audio spectrum. Others: Fig. 1:The block diagram of the Superheterodyne receiver. Fig. 2: Generator Parameters. Fig. 10: DC sweep set-up. Fig. 13: LO sin wave set-up. Fig. 16: AC sweep. 51
Page 1 and 2: SIMULATION OF A SUPERHETERODYNE REC
Page 3 and 4: CHAPTER 1: PROJECT ORGANISATION. Th
Page 5 and 6: modulating signal (Sensitivity). A
Page 7 and 8: amplitude of the carrier wave varie
Page 9 and 10: Fig. 3: Amplitude Modulator. Settin
Page 11 and 12: This is a quite high value, which m
Page 13 and 14: R Total IN IN 5 = R1 R2 R = 80k 50k
Page 15 and 16: was assumed that the drain-source r
Page 17 and 18: A V = g m R L = 5.56X10 −3 X1X10
Page 19 and 20: 1 Substituting for ω 2 = . LC T β
Page 21 and 22: −3 3 VD = VDD − I DRD = 20V −
Page 23 and 24: Ref. [6] Appendix B Fig. 21: Mixer
Page 25 and 26: Values for the second LC tuned circ
Page 27 and 28: Fig. 24: Double tuned IF amplifier.
Page 29 and 30: Fig. 28: Enlarged section of diode
Page 31 and 32: Fig. 30: AGC and audio signals. The
Page 33 and 34: I C 22.02mA BJT Q12 (pnp transistor
Page 35 and 36: The middle section of the hierarchy
Page 37 and 38: Fig. 40: Block 4 - Local oscillator
Page 39 and 40: Fig. 44: Block 8 - Audio amplifier.
Page 41 and 42: The first major test for the superh
Page 43 and 44: spectrum. However, as long as the I
Page 45 and 46: Fig. 50: Modulating frequency in AM
Page 47 and 48: * Working on the IF stages of the d
Page 49: are very important) combated this p

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