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IEICE TRANSACTIONS on Electronics

A K-band Push-Push Oscillator Using λg/2 Microstrip Resonator

Hai XIAO, Takayuki TANAKA, Masayoshi AIKAWA

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Summary :

In this paper, a novel circuit structure of Push-Push oscillator using λg/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 λg/2 microstrip resonator is designed and achieved. The high output power of +8.4 dBm at the frequency of 21.68 GHz (2f0) 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 (f0) of -26 dBc is realized.

Publication
IEICE TRANSACTIONS on Electronics Vol.E86-C No.8 pp.1438-1443
Publication Date
2003/08/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
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