Patent ID: 7227911
Filing Date: 2007-06-05
Classification: H04L

Abstract:
1. A multichannel receiver for simultaneously receiving an odd number of a plurality of signals having different channels, comprising: a complex output frequency converter for convening a carrier of a center signal of the odd number of the plurality of signals line a DC (Direct Current) component of zero frequency, converting the center signal into a complex baseband signal, and converting signals other than the center signal into a complex IF (Intermediate Frequency) signal symmetrical to the DC component of zero frequency; a plurality of ADCs (Analog-to-Digital Converters) for sampling a real number axis signal and an imaginary number axis signal of the complex output signals of the complex output frequency converter to create digital signals; at least one positive(+) frequency converter, corresponding to the individual channels, for convening at least one positive(+) channel complex signal generated from the ADCs into baseband signals; and at least one negative(−) frequency converter, corresponding to the individual channels, for converting at least one negative(−) channel complex signal generated from the ADCs into baseband signals, wherein a complex local signal of the positive(+) frequency converter corresponding to a complex IF signal symmetrical to the DC component of zero frequency is a complex conjugate of a complex local signal of the negative(−) frequency converter.