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Figure 3-1 Simple radio receiver block diagram.

Figure 3-1 Simple radio receiver block diagram. Figure 3-2 Nonlinear device used as a detector. Figure 3-3 Diode detector. Figure 3-4 Diode detector component considerations. Dashed lines indicate average voltage during pulse.

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Figure 3-1 Simple radio receiver block diagram.

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  1. Figure 3-1 Simple radio receiver block diagram.

  2. Figure 3-2 Nonlinear device used as a detector.

  3. Figure 3-3 Diode detector.

  4. Figure 3-4 Diode detector component considerations. Dashed lines indicate average voltage during pulse.

  5. Figure 3-5(a) A synchronous AM detector circuit as implemented in Electronics WorkbenchTM Multisim.

  6. Figure 3-5(b) The waveforms obtained from TP1 and TP2 for the synchronous AM detector provided in Figure 3-5(a).

  7. Figure 3-6 Superheterodyne receiver block diagram.

  8. Figure 3-7 Frequency conversion process.

  9. Figure 3-8 Frequency conversion.

  10. Figure 3-9 Variable ganged capacitor.

  11. Figure 3-10 Tracking considerations.

  12. Figure 3-11 Varactor diode symbols and C/V characteristic.

  13. Figure 3-12 Broadcast-band AM receiver front end with electronic tuning.

  14. Figure 3-13 Image frequency illustration.

  15. Figure 3-14 Image frequency not a problem.

  16. Figure 3-15 Dual-gate MOSFET RF amplifier.

  17. Figure 3-16 Typical mixer circuits.

  18. Figure 3-17 Typical IF amplifiers.

  19. Figure 3-17 (continued) Typical IF amplifiers.

  20. Figure 3-17(continued) Typical IF amplifiers.

  21. Figure 3-18 Development of AGC voltage.

  22. Figure 3-19 AGC circuit illustration.

  23. Figure 3-20 Wide-range IF/AGC amplifier. (Reprinted with permission from Electronic Design, Penton Publishing Company.)

  24. Figure 3-21 AM broadcast superheterodyne receiver.

  25. Figure 3-22 TDA1572T AM receiver. (Courtesy of Philips Semiconductors.)

  26. Figure 3-23 AM stereo block diagram.

  27. Figure 3-24 Phase relationships in AM stereo.

  28. Figure 3-25 C-Quam receiver system. (Courtesy of Motorola, Inc.)

  29. Figure 3-26 Receiver block diagram.

  30. Figure 3-27 Troubleshooting a self-excited mixer.

  31. Figure 3-28 Regulated power supply.

  32. Figure 3-29 Bridge rectifier and filter operating properly.

  33. Figure 3-30 Ripple increase caused by open diode.

  34. Figure 3-31 Testing an audio amplifier.

  35. Figure 3-32 An AM diode detector circuit as implemented with Electronics WorkbenchTM Multisim.

  36. Figure 3-33 Oscilloscope output traces from the diode detector.

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