The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9178599 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 03, 2015

Filed:

Jul. 17, 2013
Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventor:

Masataka Imao, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/10 (2006.01); H04L 1/02 (2006.01); H04B 7/08 (2006.01); H04B 7/12 (2006.01); H04B 15/00 (2006.01);
U.S. Cl.
CPC ...
H04B 7/08 (2013.01); H04B 7/12 (2013.01); H04B 15/00 (2013.01);
Abstract

A diversity receiving device includes receiving circuits, a diversity combining unit, and an oscillation controller. The receiving circuit performs frequency conversion of an analog received signal obtained at a first receiving system, by using a plurality of lower-side oscillation-frequency signals supplied from a first local oscillator, to generate a plurality of lower-side low-frequency signals, adds up the plurality of lower-side low-frequency signals to generate a first addition signal. The receiving circuit performs frequency conversion of an analog received signal obtained at a second receiving system, by using a plurality of higher-side oscillation-frequency signals supplied from a second local oscillator, to generate a plurality of higher-side low-frequency signals, and adds up the plurality of higher-side low-frequency signals to generate a second addition signal. The oscillation controller controls lower-side oscillation-frequencies so that frequency bands of the plurality of lower-side low-frequency signals become adjacent to one another and controls higher-side oscillation-frequencies so that frequency bands of the plurality of higher-side low-frequency signals become adjacent to one another.


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