Multi-band digital receiving apparatus and method with...

Details Multi-band digital receiving apparatus and method with... Multi-band digital receiving apparatus and method with...

H - Electricity

04

B

H04B 1/18 (2006.01) H04B 1/66 (2006.01)

Patent

CA 2173377

A multi-service digital receiver is presented with multiple simultaneous uses, made possible with a single practical analog-to-digital converter (38) translating the various service bands in frequency to form a single, generally continuous composite service band in which substantial frequency gaps (6) between the different services are eliminated. Bandwidth requirements are further reduced by a bandfolding technique in which at least one service waveband is divided about an intermediate mixing frequency (F mix), the divided portions are overlapped so that they collectively occupy a sub-waveband with a smaller bandwidth than the original band, and the mixing frequency (F mix) is chosen such that user-selected frequencies do not interfere with other active frequencies. Interference between non-selected active frequencies is permissible and simply ignored.

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