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A RF 2.6-GHz direct-conversion receiver front-end for CMMB (China Mobile Multimedia Broadcasting) tuner system is implemented in SiGe BiCMOS technology. It consists of a low noise amplifier (LNA) with high-gain/low-gain (HG/LG) modes, a continuously tuned radio frequency variable gain amplifier (RFVGA) and a down-conversion mixer. The receiver delivers a power gain of 36 dB, an input-referred-3rd-order-intercept-point...
A multi-mode transceiver baseband RFIC compliant with IEEE 802.11a/b/g and DVB-H is presented. The receiver filter has three corner frequency designed for WLAN and DVB-H respectively and the VGA provides 50 dB gain range with a step of 0.8 dB; the transmitter filter provides 12 MHz bandwidth and the VGA covers 24 dB gain range in 1.6-dB steps. In addition, the calibration of filter is reported to...
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