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Design of a C-Band Microstrip Voltage Controlled Oscillator Using an Electromagnetic-Harmonic Balance Co-Design Technique

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2 Author(s)
Victor, A. ; RF Conversion Technol. Harris Stratex Networks, Morrisville, NC ; Nath, J.

A voltage controlled oscillator (VCO) was designed for operation in C-band for use in a microwave point-to-point radio system. Microstrip technology was chosen for resonator implementation since it offers ease of manufacturing and frequency adjustment The design was performed using an electromagnetic (EM)-harmonic balance co-design technique in order to achieve first pass success. The measured frequency versus tune voltage data shows excellent agreement with simulation. Maximum deviation of 2% between the two was observed. The VCO tuned from 4.3 GHz to 5.4 GHz as the tuning voltage was varied from 0 to 9V representing a tuning bandwidth in excess of 20%. Phase noise over the tune range was better than -108 dBc/Hz at 100 kHz offset.

Published in:

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Date of Conference:

11-14 Dec. 2007