Multiplier and radio communication apparatus using the same

Details Multiplier and radio communication apparatus using the same Multiplier and radio communication apparatus using the same

2006-03-22

2008-12-30

Le, Thanh C (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S323000, C455S333000

Reexamination Certificate

active

07471939

ABSTRACT:
A multiplier includes a first input terminal which receives a modulated signal, three second input terminals which receive first, second, and third local signals respectively, the first, second, and third local signals having a phase difference of 120° from one another, a multiplication unit configured to multiply the modulated signal by each of the first, second, and third local signals, and output first, second, and third multiplied output signals, and three output terminals from which the first, second, and third multiplied output signals are derived, respectively.

REFERENCES:
patent: 5311086 (1994-05-01), Yamaji et al.
patent: 5483695 (1996-01-01), Pardoen
patent: 5548839 (1996-08-01), Caldwell et al.
patent: 7414468 (2008-08-01), Yamaji et al.
patent: 2003/0119474 (2003-06-01), Kimura
patent: 2001-339989 (2001-12-01), None
patent: 3360912 (2002-10-01), None
Yamaji, Takafumi, Vector Pulse-Density Modulation, IEE Electronic Letters, vol. 30, No. 20, pp. 1652-1653, Sep. 29, 1994.

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