A SiGe BiCMOS Transmitter/Receiver Chipset With On-Chip SIW Antennas for

Abstract

This paper presents a terahertz (THz) transmitter (Tx) and receiver (Rx) chipset operating around 400 GHz in 0.13- m SiGe BiCMOS technology. The Tx chip consists of a voltage-controlled oscillator, a buffer, a modulator, a power am- plifier, a frequency tripler, and a substrate integrated waveguide (SIW) antenna. This antenna has an additional high-pass filtering characteristic to suppress the unwanted fundamental and second harmonic signals by 50 and 30 dB, respectively. The Rx chip includes a proposed recon figurable SIW antenna and a novel two-mode subharmonic mixer with 5-dB reduction of conversion loss. The Rx chip consumes 50 nA from a 1.2-V supply. The measurement results of the Tx and Rx chips and a back-to-back test of the Tx/Rx chipset show the feasibility and pave the way of implementing a f ully integrated THz system in silicon technology for mass production.