A V-band GaAs HEMT uniplanar monolithic integrated antenna and receiver front end

A V-band monolithic integrated folded-slot balanced mixer with LO source on the same chip is presented for the first time. The circuit is designed based on the uniplanar structures such as coplanar waveguide (CPW) and slotline. The embedding impedance of the folded-slot antenna is calculated by finite-difference time-domain (FDTD) method and compared with the impedance of the Schottky-Barrier diode at 60 GHz to design the mixer. The V-band voltage control oscillator (VCO) is developed based on the 0.15 /spl mu/m GaAs HEMT technology. A reduced-size CPW-to-slotline transition is designed for the LO pumping network. The measured results of the VCO, transition, and mixer are included.