Patent Number: 8,816,777

Title: Microwave synthesizer

Abstract: A microwave synthesizer is disclosed that may generate low phase noise and high frequency resolution microwave signals The microwave synthesizer may include a coarse-tuning loop, the coarse-tuning loop may be adopted to generate a first signal with coarsely adjustable frequency. The coarse-tuning loop may have a first voltage controlled oscillator (VCO). An output loop, the output loop may be adopted to generate a second signal with finely adjustable frequency. The output loop may have a second VCO. A frequency mixer may be configured to couple the coarse-tuning loop and the output loop. A frequency mixer may be adopted to subtract the first and second signals. A reference frequency source may be coupled to the coarse-tuning loop and the output loop to provide reference signal for the microwave synthesizer.

Inventors: Szilagyi; Tomany (Coarsegold, CA)

Assignee: Szilagyi; Tomany

International Classification: H03L 7/087 (20060101); H03B 21/00 (20060101); H03L 7/22 (20060101)

Expiration Date: 8/26/12018