figure 4-1 balanced ring modulator

Modern Electronic Communication 9th editionJeffrey S. Beasley and Gary M. Miller

Figure 4-1 Balanced ring modulator.

Figure 4-2 The Analog Devices AD630 balanced modulator/demodulator. (Courtesy of Analog Devices.)

Figure 4-2 (continued) The Analog Devices AD630 balanced modulator/demodulator. (Courtesy of Analog Devices.)

Figure 4-3 Sideband suppression.

Figure 4-4 Crystal equivalent circuit (a) and filter (b).

Figure 4-5 Ceramic filter and response curve.

Figure 4-6 Mechanical filter.

Figure 4-7 Electrical analogy of a mechanical filter.

Figure 4-8 SSB transmitter block diagram.

Figure 4-9 SSB generator-filter method. (From the ARRL Handbook, courtesy of the American Radio Relay League.)

Figure 4-10 Phase-shift SSB generator.

Figure 4-11 Amplitude expandor circuit.

Figure 4-12 ACSSB signal.

Figure 4-13 Linear power amplifier. (Courtesy of Microwaves and RF.)

Figure 4-14 AM, DSB, and SSB waves from sinusoidal modulating signals.

Figure 4-15 Mixer used as SSB demodulator.

Figure 4-16 SL640C SSB detector.

Figure 4-17 SSB receiver block diagram.

Figure 4-18 SSB receiver. (From the ARRL Handbook, courtesy of the American Radio Relay League.)

Figure 4-18 (continued) SSB receiver. (From the ARRL Handbook, courtesy of the American Radio Relay League.)

Figure 4-19 Balanced modulator.

Figure 4-20 Checking for carrier leakthrough with an oscilloscope.

Figure 4-21 Single-sideband signal with and without carrier leakthrough.

Figure 4-22 Checking carrier suppression with a spectrum analyzer.

Figure 4-23 Carrier suppression as seen on a spectrum analyzer.

Figure 4-24 Filter testing.

Figure 4-25 Two-tone test.

Figure 4-26 SSB receiver block diagram.

Figure 4-27 A multiplier plus SSB filter as implemented with Electronics WorkbenchTM Multisim.

Figure 4-28 The double-sideband output spectrum for the multiplier circuit.

Figure 4-29 The multiplier circuit with the lower sideband removed.

figure 4-1 balanced ring modulator

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