f0) with the phase noise of -98 dBc/Hz at the offset frequency of 1 MHz, and a high suppression of the undesired the fundamental frequency signal (f0) of -33 dBc is obtained." />
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A 20 GHz Push-Push Oscillator Using Ring Resonator
Hai XIAO Takayuki TANAKA Masayoshi AIKAWA
IEICE TRANSACTIONS on Electronics
Publication Date: 2004/12/01
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
microstrip circuits, microwave oscillator, push-push oscillator,
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In this paper, a 20 GHz push-push oscillator using a ring resonator is proposed. The push-push oscillator adopts "dipole resonator push-push oscillator" circuit scheme, in which a common resonator plays two roles of frequency determining and power combining, and then the additional power combiner circuit required in conventional push-push oscillators can be eliminated. This kind of push-push oscillators has the advantages of the easy circuit design, the simple circuit configuation and the miniaturization of the circuit size. The output power is +4.5 dBm at the frequency of 20.34 GHz (2f0) with the phase noise of -98 dBc/Hz at the offset frequency of 1 MHz, and a high suppression of the undesired the fundamental frequency signal (f0) of -33 dBc is obtained.