A single-chip 900-MHz spread-spectrum wireless transceiver in1-μm CMOS. II. Receiver design |
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| Authors: | Rofougaran A Chang G Rael JJ Chang JY-C Rofougaran M Chang PJ Djafari M Min J Roth EW Abidi AA Samueli H |
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| Affiliation: | Dept. of Electr. Eng., California Univ., Los Angeles, CA; |
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| Abstract: | For pt. I see ibid., vol. 33, no. 4, April 1998. A 900-MHz direct-conversion receiver to detect a frequency-hopped carrier with frequency shift keying (FSK) modulation at 160 kb/s is integrated on the same chip as the transmitter. The receiver combines a low-noise amplifier with downconversion mixers and low-pass channel-select filters in quadrature channels. A digital correlating detector makes the data decisions. The received signal is dehopped when it is down-converted. The cascade noise figure is 8.6 dB, and the cascade IIP3 is -8.3 dBm. In active mode, the receiver takes 120 mA from 3 V |
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