Design of HTS coplanar waveguide matching circuit for low noise CMOS-HTS receiver

For realizing a single chip HTS integrated microwave receiver, a superconducting slot antenna and a Si-CMOS low noise amplifier (LNA) combined with a broad band matching circuit composed of coplanar waveguide (CPW) meanderline resonators has been designed and tested. By applying the filter technique and using admittance inverters (J inverters), we propose a new design method of CPW broadband impedance matching circuit connected to low and high impedance loads such as HTS antenna and CMOS device. Based on the design method, we designed a Chebyshev type impedance matching circuit connecting with slot antenna and CMOS-LNA at 10 GHz center frequency. More over, in order to increase the antenna directivity, we designed 2-dimensional antenna array by folding the slot antenna.