1. 1.5-GHz voltage controlled oscillator with 3% tuning bandwidth using a two-pole DSBAR filter
- Author
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I.D. Avramov, Stephen R. Gilbert, and Richard C. Ruby
- Subjects
Materials science ,Acoustics and Ultrasonics ,Electronic oscillator ,business.industry ,Bandwidth (signal processing) ,Electrical engineering ,dBc ,Voltage-controlled oscillator ,Resonator ,Phase noise ,Insertion loss ,Optoelectronics ,Electrical and Electronic Engineering ,business ,Instrumentation ,Linear phase - Abstract
First results on a novel voltage controlled oscillator (VCO) in the lower gigahertz range, featuring excellent phase noise and high power efficiency are presented. The heart of the VCO is a recently reported novel miniature two-pole decoupled stacked bulk acoustic resonator (DSBAR) filter. With its single 180° phase transition over the 1 dB bandwidth, linear phase, and maximum 1 dB insertion loss, it provides stable single-mode operation over 45 MHz (≈3%) of tuning bandwidth and has negligible heat dissipation when operated at incident power levels of 100 mW or greater. The 1.55-GHz laboratory VCO prototypes operate at 5 V supply voltage, 50 mA supply current, 15 dBm of output power, and >;13% efficiency, demonstrating -84 and
- Published
- 2011