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Dive into the research topics where Kazunari Kawahata is active.

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Featured researches published by Kazunari Kawahata.


european microwave conference | 2001

Frequency Modulated Coupled Oscillator Arrays

Ragip Ispir; Akira Miyata; Kazunari Kawahata; Masao Ida; Yohei Ishikawa

A linear array of oscillators each connected to a radiator to combine output power of the oscillators in free-space can be used in order to scan the radiated beam electronically by controlling free-running frequencies of both end oscillators. We applied this technique to Frequency Modulated Continuous Wave (FMCW) radar to perform electronically beam scanning to detect angle information in addition to range and speed information of the target. A two-element coupled voltage controlled oscillator array with frequency modulation capability was constructed at 10.4GHz. The radiation beam could be scanned 24° continuously.


Archive | 1996

Surface mounting antenna and communication apparatus using the same antenna

Kazunari Kawahata; Kazuhisa Yamaki


Archive | 2000

Surface mount antenna and communication apparatus using the same

Shoji Nagumo; Nobuhito Tsubaki; Kazunari Kawahata


Archive | 2007

ANTENNA AND WIRELESS COMMUNICATION DEVICE

Kenichi Ishizuka; Kazunari Kawahata


Archive | 1994

Dielectric rod antenna

Kazunari Kawahata


Archive | 2000

Surface-mount antenna and communication device with surface-mount antenna

Nobuhito Tsubaki; Shoji Nagumo; Kazunari Kawahata


Archive | 1997

Surface-mount antenna and a communication apparatus using the same

Kazunari Kawahata; Ken Okada


Archive | 2000

Antenna device and communication apparatus using the same

Shoji Nagumo; Nobuhito Tsubaki; Kazunari Kawahata


Archive | 1999

Antenna device and radio device comprising the same

Kazunari Kawahata; Shigekazu Itoh


Archive | 2009

Antenna device and wireless communication apparatus

Shigeyuki Fujieda; Kazunari Kawahata; Kenichi Ishizuka

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Akira Miyata

University of Electro-Communications

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Jin Sato

Murata Manufacturing

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