1
Mizuno Kazuyuki, Hirai Takami, Mizutani Yasuhiko, Arai Hiroyuki: Antenna system and its manufacture. NGK Insulators, Arai Hiroyuki, October 13, 2000: JP2000-286634 (128 worldwide citation)

PROBLEM TO BE SOLVED: To make the effect which is obtained when a filter and an antenna are integrated compatible with such an effect that the inspections through the filter can be performed easily. SOLUTION: An antenna system is constituted by integrally forming a filter section 18 having an input ...


2
Mizutani Yasuhiko, Hirai Takami, Mizuno Kazuyuki, Arai Hiroyuki: Transmitter-receiver. NGK Insulators, Arai Hiroyuki, December 15, 2000: JP2000-349680 (101 worldwide citation)

PROBLEM TO BE SOLVED: To miniaturize the transmitter-receiver itself, to simplify the structure and to reduce the manufacture cost by realizing sufficient transmission reception isolation in spite of the simple configuration.SOLUTION: A transmission section 18 having a transmission filter section 14 ...


3
Okuhora Akihiko, Hirabayashi Takayuki, Nakayama Norikazu, Arai Hiroyuki: Antenna device. Sony, Arai Hiroyuki, September 13, 2002: JP2002-261533 (8 worldwide citation)

PROBLEM TO BE SOLVED: To provide an antenna device that is constituted in compact in size, will not require adjustment, regardless of its usage conditions, and exhibits proper wide-band characteristic for radio communication.SOLUTION: This antenna device is constituted by providing an antenna sectio ...


4
Arai Hiroyuki, Chiba Shuji: Antenna matching circuit. Staf, Arai Hiroyuki, June 7, 2007: JP2007-143031 (4 worldwide citation)

PROBLEM TO BE SOLVED: To perform high-quality speech in simple configuration of an antenna matching circuit of a portable telephone set.SOLUTION: An RSSI level of a portable telephone set is compared with a reference level by an analog comparator circuit 4. A comparison result signal is sent to a lo ...


5
Arai Hiroyuki, Nakahama Masahiko: Two-element meandering line sleeve antenna. Arai Hiroyuki, Nec Infrontia, May 17, 2002: JP2002-141732 (4 worldwide citation)

PROBLEM TO BE SOLVED: To provide a meandering line sleeve antenna that has two antenna elements to obtain a high gain with a small size.SOLUTION: The two-element meandering line sleeve antenna is formed through the provision of two meandering shaped antenna elements 11, 12 that are placed symmetrica ...


6
Nakamura Takaayu, Arai Hiroyuki: Balun-incorporated type loop antenna. Nitsuko, Arai Hiroyuki, February 9, 2001: JP2001-036330 (3 worldwide citation)

PROBLEM TO BE SOLVED: To incorporate a balun into a loop antenna with lower manufacturing cost, without changing the size of the loop antenna. SOLUTION: A balun 12 is incorporated into the loop antenna 11, formed on a base 10 by forming conductors of the balun 12 on the base 10 in the vicinity of a ...


7
Okubora Akihiko, Hirabayashi Takayuki, Nakayama Norikazu, Arai Hiroyuki: Antenna device. Sony, Arai Hiroyuki, January 10, 2007: EP1742295-A1 (2 worldwide citation)

The present invention is an antenna apparatus attached to an electronic device and includes an antenna section (11) having an antenna element (18) provided with two or more power supply points (19) and two or more earth points (20); and an earth point switch (21) which is provided correspondingly to ...


8
Mizuno Kazuyuki, Hirai Takami, Mizutani Yasuhiko, Arai Hiroyuki: Antenna system. NGK Insulators, Arai Hiroyuki, October 13, 2000: JP2000-286615 (2 worldwide citation)

PROBLEM TO BE SOLVED: To reduce the size of electronic equipment, communication equipment, etc., having an antenna system by making impedance matching possible without mounting an impedance matching circuit on a wiring board separately from the antenna system. SOLUTION: An impedance matching circuit ...


9
Arai Hiroyuki, Maeyama Toshiyuki, Yonezawa Takeya: Patch array antenna. Arai Hiroyuki, Kddi Research &Amp Development Laboratories, Kddi, Kyocera, September 13, 2002: JP2002-261539 (2 worldwide citation)

PROBLEM TO BE SOLVED: To enable a batch array antenna to obtain desired directivity by adjusting the interval between antenna elements, and to eliminate the need for changing a feeder circuit from the antenna.SOLUTION: In the patch array antenna, a feeder line 2 is formed on a first dielectric subst ...


10
Kanemoto Takashi, Ebine Yoshio, Arai Hiroyuki: Patch antenna. NTT Docomo, Arai Hiroyuki, September 13, 2002: JP2002-261540 (2 worldwide citation)

PROBLEM TO BE SOLVED: To improve the F/B ratio of a patch antenna and, in addition, to increase the gain of the antenna in the obliquely forward direction.SOLUTION: This patch antenna is constituted, in such a way that a planar feeding element 13 is arranged at the central part, and at the same time ...