In this paper, we describe branch-line couplers (BLCs) with broadband characteristics over relative bandwidths of 50% in X-band. The proposed couplers consist of a conventional BLC and external matching networks composed of two-stage open-circuite...
This paper treats a rat-race circuit which plays com-bining/dividing of a microwave signal, and shows size-reduction and band-broadening design methods of the uniplanar circuit utilizing shunt capacitors and a crossover-type phase inverter. The de...
OECC/PSC 2019 - 24th OptoElectronics and Communications Conference/International Conference Photonics in Switching and Computing 2019 2019年7月 [査読有り]
We designed and fabricated an electro-optic modulator for optically compensating the nonlinear distortion. The single-chip structure and the single-input operation were realized by integrating a microwave 180-degree hybrid on the DPMZM substrate.
GeMiC 2019 - 2019 German Microwave Conference 190-193 2019年4月 [査読有り]
Screen printing technology using silver nanoparticle ink with high conductivity attracts attention as a technology for fabricating low-loss transmission lines in high frequency band such as millimeter-wave band. Its effectiveness has been confirme...
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工学研究科