| 摘要 |
<p>A low cost, high performance near direct conversion FM receiver having a single local oscillator (34) and means (40) for equalizing in-phase and quadrature IF signals is disclosed. The receiver comprises downconversion means (32) and processing means (40). The downconversion means (32) receives an RF signal and downconverts the RF signal to an in-phase IF signal (IFI) and a quadrature-phase IF signal (IFQ). The processing means (40) digitizes IFI and IFQ, corrects these signals so that they are substantially equal in magnitude and substantially 90° out of phase, and then downconverts the IF signals to baseband signals (I, Q).</p> |
