Filter circuit and radio communication system comprising filter

Telecommunications – Transmitter – Including tuning

Reexamination Certificate

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Details

C455S193200, C455S266000, C455S307000, C333S235000

Reexamination Certificate

active

07840196

ABSTRACT:
In a filter circuit, resonators is connected in parallel between input and output terminal, an input signal is input through the input terminal and supplied to the resonators. Signal generators are connected to the resonators to control the resonators. The signal generators are controlled by a control unit so that the resonators are resonated to generate resonance signals at different resonant frequencies and at predetermined resonance phases. Thus, the output signal is set within a desired frequency range.

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Japanese Office Action issued on Aug. 17, 2010, with English translation (11 pages).

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