High-Q oscillators up to 200 MHz are built using bulk quartz crystal resonators. For UHF and microwave frequencies, transmission line and cavity oscillators offer higher Q than L-C designs, but they are larger. SAW resonators fill the need for small highloaded-Q oscillators in the frequency range 200 to 1,200 MHz. Typical unloaded Qs are 6,000 to 12,000.

Chapter Contents:

• 10.1 SAW Bipolar Oscillator
• 10.1.1 Output Coupling
• 10.2 SAW Hybrid Oscillator
• 10.2.1 Tuning
• 10.2.2 Element Values
• 10.2.3 Output Coupling
• 10.3 SAW Dual-gate FET Oscillator
• 10.3.1 Element Values
• 10.3.2 Output Coupling
• 10.4 References

Inspec keywords: UHF oscillators; microwave oscillators; surface acoustic wave resonators; crystal oscillators; Q-factor; transmission lines

Other keywords: transmission line; SAW resonators; L-C designs; microwave frequencies; small highloaded-Q oscillators; UHF frequencies; SAW oscillators; cavity oscillators; frequency 200 MHz to 1200 MHz; bulk quartz crystal resonators

Subjects: Piezoelectric devices; Microwave circuits and devices; Oscillators; Acoustic wave devices