Monolithic rat-race mixers for millimeter waves

Matsuura, Hiroyuki; Tezuka, K.; Aoki, I.; Yamanaka, M.; Kobayashi, S.; Fujita, T.; Miura, Akira

doi:10.1109/22.681209

Cited by 18 publications

(1 citation statement)

References 7 publications

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“…Rat-race hybrid couplers are key components in the design of microwave devices such as power amplifiers, mixers, and antenna systems due to their simplicity, wide bandwidth in power dividing distribution, and a high isolation between the ports [1,2]. Wireless communication systems usually require smaller device size in order to meet circuit miniaturization and cost reduction.…”

Section: Introductionmentioning

confidence: 99%

Size Reduction and Harmonic Suppression of Rat-Race Hybrid Coupler Using Defected Microstrip Structure

Kazerooni

Aghalari²

2011

PIER Letters

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Abstract-In this paper, defected microstrip structure (DMS) is applied to design a compact microstrip rat-race hybrid coupler. The proposed structure introduces both harmonic signal suppression and a significant reduction of size because half of the ring is embedded in upper section. By embedding the DMS, it is observed that the third harmonic signal is suppressed to −25 dB with respect to a conventional rat-race hybrid coupler. Besides, this structure also effectively reduces the occupied area to 25% of the conventional case. Finally, using even and odd modes analysis the ABCD matrix of the proposed rat-race coupler was extracted. It is observed that the results are in good agreement with the full wave analysis and measurement.

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Section: Introductionmentioning

confidence: 99%