RADIO COMMUNICATE METHOD AND SYSTEM - COMM RES LAB INDEPENDENT ADMIN

Title:

RADIO COMMUNICATE METHOD AND SYSTEM

Document Type and Number:

WIPO Patent Application WO/2003/084093

Kind Code:

A1

Abstract:

A transmitter (1) transmits from an transmission antenna (7) a synthetic signal produced by combining a part of power of a radio frequency (RF) band modulation signal and a part of power of a local oscillation signal used by frequency conversion&semi meanwhile a receiver (8) detects it by means of a reception antenna & detection part (9). The reception antenna & detection part (9) has basic unit reception circuits (11) each composed of a planar printed antenna (12) such as a patch antenna, an amplifier circuit (13) fabricated in the form of a small planar circuit by the MMIC technique, and a mixer circuit (14) functioning as a squarer. The powers of the outputs of the basic unit reception circuits are combined and delivered to an IF signal demodulating section. The IF signal demodulating section (10) demodulates the received data. Thus, in a very small space, a reception antenna having a detection function, a high gain, and a wide beam characteristic similar to that of a single antenna is installed.

Inventors:

SHOJI YOZO (JP)
HAMAGUCHI KIYOSHI (JP)
TSUJI HIROYUKI (JP)
OGAWA HIROYO (JP)

Application Number:

PCT/JP2003/000116

Publication Date:

October 09, 2003

Filing Date:

January 09, 2003

Export Citation:

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Assignee:

COMM RES LAB INDEPENDENT ADMIN (JP)
SHOJI YOZO (JP)
HAMAGUCHI KIYOSHI (JP)
TSUJI HIROYUKI (JP)
OGAWA HIROYO (JP)

International Classes:

H01Q1/22; H01Q21/08; H01Q23/00; H04B1/18; H04B1/40; (IPC1-7): H04B7/08; H01Q23/00; H04B1/40

Foreign References:

JPH0548491A	1993-02-26
JPH0244902A	1990-02-14
JP2001053640A	2001-02-23
JP2002009655A	2002-01-11

Other References: