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Full 360 degrees phase shifting of injection-locked oscillators
Journal article

Full 360 degrees phase shifting of injection-locked oscillators

X Zhang and A.S Daryoush
IEEE microwave and guided wave letters, v 3(1), pp 14-16
Jan 1993

Abstract

Circuits Delay lines Frequency Injection-locked oscillators Optical arrays Optical control Optical design Optical feedback Phase shifters Phased arrays
A design is presented to produce analog phase shift of 0 degrees to 360 degrees in optically controlled oscillators which are subharmonically injection-locked. The proposed concept was analytically described and experimentally demonstrated by producing 360 degrees of phase shift in an 8-GHz oscillator that is indirect optically injection-locked to a 4-GHz subharmonic frequency. This design concept could eliminate the need for switched delay-line phase shifters in the T/R modules of optically controlled phased array antennas, thus making T/R modules more compact and efficient.< >

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