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A 5 GHz direct conversion transceiver is fabricated in a 0.13 mum CMOS process for WLAN 802.11a applications. The transmitter achieves -56 dBc LO leakage, -36 dBc sideband rejection, -43 dBc 3rd harmonic suppression at 5.4 GHz, and an EVM of 3.4% at 5.1 GHz with 60 mW power consumption. The receiver achieves 3.3 dB NF, 27 dB conversion gain, -12 dBm IIP3, and a measured 1/f noise corner of 110 kHz...
A novel on-chip capacitively-loaded, transmission-line-standing-wave resonator is employed in a low phase noise VCO, to achieve a measured phase noise of-117dBc/Hz at a 1MHz offset. The prototype 5 GHz VCO, implemented in 0.13 mum CMOS, dissipates 3 mW from a 1.2 V supply, and occupies a compact die area of 0.11mm2.
A 5 GHz MIMO direct-conversion transceiver composed of 2 transmitters (TXs) and 3 receivers (RXs) is fabricated with 0.13 mum CMOS technology. Die size is 4.56 mm times 7.7 mm. For driving 10 GHz LO signal lines of 5 mm length for both TXs and RXs, inductor-less low-power LO repeaters are equipped in individual LO paths. A linearized RF variable gain amplifier is proposed for low power operation....
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