Patent ID: 6160571
Filing Date: 2000-12-12
Classification: H04B,H04H,H04N

Abstract:
A CATV transceiver comprising:a) a housing providing RF shielding for a transceiver circuit, said housing enclosing a circuit including:i) a diplexer, including fixed value inductors, coupleable to a CATV cable plant to receive an RF input signal and to transmit an RF output signal;ii) an RF receiver coupled to said diplexer and including a frequency up-converter, a first frequency down-converter and a second frequency down-converter, said converters each including a voltage controlled oscillator coupled to a signal mixer, each said voltage controlled oscillator being responsive to a control signal generated from a single oscillator crystal, said second frequency down-converter operating to provide an output signal representative of said RF input signal within a predetermined output frequency pass-band; andiii) an RF transmitter coupled to said diplexer, said RF transmitter providing for the transmission of said RF output signal in response to an input signal; andb) control means coupled through said housing to said frequency up-converter and said first frequency down-converter to establish the respective modulation frequencies of said frequency up-converter and said first frequency down-converter, said control means selecting said respective modulation frequencies such that the LO-related frequency cross-products due to the concurrent use of said respective modulation frequencies occur outside of said predetermined frequency pass-band.