A K-band Push-Push Oscillator Using λ_g/2 Microstrip Resonator(Special Issue on Microwave and Millimeter Wave Technology)

概要

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In this paper, a novel circuit structure of Push-Push oscillator using λ_g/2 microstrip resonator is proposed, in which a common resonator plays two functions of frequency determining and power combining. This type of Push-Push oscillator is named "Dipole Resonator Push-Push oscillator" here, where an additional power combiner circuit required in conventional Push-Push oscillators can be eliminated. The Push-Push oscillator adopting this design concept has the advantages of the easy circuit design, the simple circuit structure and the miniaturization of the circuit size. As a most simple example of this design concept, a K-band Push-Push oscillator using a λ_g/2 microstrip resonator is designed and achieved. The high output power of +8.4dBm at the frequency of 21.68 GHz (2f_0) is obtained with the phase noise of -100.5 dBc/Hz at the offset frequency of 1 MHz. Besides, a high suppression of the undesired fundamental frequency signal (f_0) of -26dBc is realized.
社団法人電子情報通信学会の論文
2003-08-01