A Highly Miniaturized Voltage Controlled Impedance Transformer Employing Periodically Arrayed InGaP/GaAs Diodes for Application to Matching Components on MMIC

摘要

In this work, microwave transmission lines employing various periodic structures which have been developed to date are introduced. Concretely, PPGM (periodically perforated ground metal) structure was developed for application to miniaturized passive components on GaAs substrate. A short wavelength microstrip line employing comb-type capacitive transmission line (CCTL) was also developed, which resulted in a further reduction of wavelength of transmission line on MMIC. For a development of voltage controlled passive devices, a STLVCI (short-wavelength transmission line with variable characteristic impedance) employing periodically loaded diodes was proposed. Using the STLVCI, a highly miniaturized voltage controlled impedance transformer was developed for application to impedance matching between components on MMIC.