Signal Receiver for Wideband Wireless Communication
First Claim
1. A signal receiver comprising means for receiving a wideband radio frequency signal having a first carrier frequency, means for generating a plurality of intermediate frequency sub-bands, each sub-band being representative of a portion of the received radio frequency signal band and said plurality of sub-bands together defining an intermediate frequency signal band having a second carrier frequency lower than said first carrier frequency and being representative of said received radio frequency signal band, the receiver further comprising intermediate frequency processing means for performing parallel processing of each of said sub-bands in the analog domain and then performing analog-to-digital conversion of said processed sub-bands and means for combining the resultant digital signals for subsequent further processing.
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Accused Products
Abstract
A signal receiver for use in a 60 GHz wireless area network, in which the received RF signal band (100) is converted to a plurality of intermediate frequency (IF) sub-bands (104) and then processing (LPF, AGC, ADC) in the analogue domain of the sub-bands (104) is performed in parallel. As a result, the design requirements of the analogue components are significantly relaxed and it is possible to perform gain control in respect of each sub-band (104), which improves the quality of the received signal.
91 Citations
11 Claims
- 1. A signal receiver comprising means for receiving a wideband radio frequency signal having a first carrier frequency, means for generating a plurality of intermediate frequency sub-bands, each sub-band being representative of a portion of the received radio frequency signal band and said plurality of sub-bands together defining an intermediate frequency signal band having a second carrier frequency lower than said first carrier frequency and being representative of said received radio frequency signal band, the receiver further comprising intermediate frequency processing means for performing parallel processing of each of said sub-bands in the analog domain and then performing analog-to-digital conversion of said processed sub-bands and means for combining the resultant digital signals for subsequent further processing.
- 8. A signal receiver comprising means for receiving a wideband radio frequency signal having a carrier frequency, means for sub-sampling said received radio frequency signal band at a frequency lower than said carrier frequency so as to generate a plurality of discrete sub-bands, each sub-band being representative of a portion of the received radio frequency signal band the receiver further comprising intermediate frequency (IF) processing means for performing parallel processing of each of said sub-bands in the analog domain and then performing analog-to-digital conversion of said processed sub-bands-, and means for combining the resultant digital signals for subsequent further processing.
Specification