Transmission/reception integrated radio-frequency apparatus

Details Transmission/reception integrated radio-frequency apparatus Transmission/reception integrated radio-frequency apparatus

2007-01-02

2007-01-02

Kelley, Chris (Department: 2623)

Interactive video distribution systems

Video distribution system with upstream communication

Having link to external network

C725S131000, C725S151000, C375S222000, C455S127100, C455S127200

Reexamination Certificate

active

09793982

ABSTRACT:
There is provided a highly reliable transmission/reception integrated radio-frequency apparatus which can achieve a high communication quality in a cable modem. A reception RF signal is input to a reception system block via an input/output terminal, converted to an intermediate-frequency signal, and output from a terminal. An output terminal of a transmission processing section of a transmission system block is connected to the input/output terminal via an overvoltage protection circuit, a high-pass filter functioning as a countermeasure to overvoltage, and a low-pass filter for suppressing harmonics produced from the high-pass filter.

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