A Basic Study on RF Characteristics of Short Wavelength Comb-type Capacitive Transmission Line on MMIC

摘要

In this work, a short wavelength microstrip line employing comb-type capacitive transmission line (CCTL) on GaAs monolithic microwave integrated circuit (MMIC) was developed for application to miniaturized on-chip passive components. The microstrip line employing CCTL showed a wavelength much shorter than conventional transmission line Concretely, the wavelength of the microstrip line employing CCTL was only 10% of conventional microstrip line on GaAs MMIC. In addition, the characteristic impedance Z_0 of CCTL was easily controlled by changing the length l_c of the capacitive area.