A 40 GHz CMOS transceiver and radio front-end for the customer premise equipment unit of a radio-over-fiber system

A miniature 40 GHz transceiver and radio front-end designed and simulated using a 0.13-μm RF CMOS process for Radio-over-Fiber applications is presented in this paper. The transceiver employs a direct-conversion architecture. The radio is designed for a frequency division duplex (FDD) communications system. PHY layer data rates as high as 1.5 Gbps on a wireless link are feasible using this radio design. The phase-locked-loop (PLL) and supporting digital circuits however, are not included. The receiver shows a power gain of about 41 dB with a LNA noise figure of 7 dB. The transmitter achieves a conversion gain of about 40.7 dB and an output P1dB of 10.7 dBm.