Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate
2006-02-07
2006-02-07
Le, Lana (Department: 2685)
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
C455S334000, C455S307000, C455S209000
Reexamination Certificate
active
06996384
ABSTRACT:
Disclosed is a small-size receiver that exhibits high sensitivity when used with a plurality of frequencies or a plurality of radio communication systems. To provide a small-size, high-sensitivity, direct conversion receiver for use with a plurality of frequencies or a plurality of radio communication systems, the present invention has a high-frequency-input signal path for a low-noise amplifier optimized for use with various frequencies or radio communication systems. The high-frequency-input signal path includes at least one band-pass filter and its input and output matching circuits. A low-loss switching means is used to connect an optimum high-frequency-input signal path to the low-noise amplifier in accordance with a selected operation mode.
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Tanaka Satoshi
Yamawaki Taizo
Hitachi , Ltd.
Le Lana
Miles & Stockbridge P.C.
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