Invention Grant
US08730112B2 Antenna evaluation apparatus and antenna evaluation method for creating multipath waves around receiving antenna
有权
用于在接收天线周围产生多径波的天线评估装置和天线评估方法
- Patent Title: Antenna evaluation apparatus and antenna evaluation method for creating multipath waves around receiving antenna
- Patent Title (中): 用于在接收天线周围产生多径波的天线评估装置和天线评估方法
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Application No.: US13056490Application Date: 2010-04-21
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Publication No.: US08730112B2Publication Date: 2014-05-20
- Inventor: Tsutomu Sakata , Atsushi Yamamoto , Satoru Amari
- Applicant: Tsutomu Sakata , Atsushi Yamamoto , Satoru Amari
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2009-115486 20090512; JP2009-240556 20091019
- International Application: PCT/JP2010/002882 WO 20100421
- International Announcement: WO2010/131423 WO 20101118
- Main IPC: G01R29/10
- IPC: G01R29/10

Abstract:
An antenna evaluation apparatus includes receiving antennas to be evaluated, scatterer antennas provided around them, signal generators, delay circuits, dividers, phase-shift circuits, and attenuation circuits. A computer controls the delay circuits to add delay times to radio frequency signals, and controls the phase-shift circuits and attenuation circuits to change phases and amplitudes of the radio frequency signals to produce a first fading. The antenna evaluation apparatus radiates the radio frequency signals from the scatterer antennas, thus creating multipath waves including delay and fading around the receiving antenna.
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