Design of fully integrated receiver front-end for VSAT applications

A fully integrated receiver front-end for very small aperture terminal (VSAT) applications in a 0.18-μm SiGe BiCMOS technology is demonstrated. To satisfy different specifications of various applications, the proposed receiver can down-convert the input signal in a wide RF range from 9.8 to 14.8 GHz to the IF frequency at L-band (950-2150MHz) with four differences LO frequencies. The noise figure is better than 7 dB with an averaged conversion gain of 45.5 dB for the entire RF band. The receiver frontend circuit demonstrate a high linearity (OP1dB > 4.5 dBm) with an excellent gain flatness (±1.5 dB) under a low power consumption (150mW).