Title :
Small-sized MMIC amplifiers using thin dielectric layers
Author :
Banba, Seiichi ; Ogawa, Hiroyo
Author_Institution :
ATR Opt. & Radio Commun. Res. Labs., Kyoto, Japan
fDate :
3/1/1995 12:00:00 AM
Abstract :
Miniaturized MMIC amplifiers utilizing a multilayer structure composed of thin film transmission lines are presented. The fundamental characteristics of the thin film transmission lines for use in microwave active circuits are discussed through calculations by numerical analysis. A two-stage low-noise amplifier, a single-stage wideband amplifier, and a balanced amplifier are designed within very small areas, while good performance is maintained. The results include that a Ka-band single-stage amplifier is fabricated in a 0.8 mm×0.6 mm area with a gain of 8.0-9.5 dB in the frequency range of 16-26.5 GHz and input/output return losses of better than 8 dB at 26.5 GHz. The proposed amplifier configurations can be applied to high density integration of one-chip MMIC modules
Keywords :
HEMT integrated circuits; MMIC amplifiers; dielectric thin films; field effect MMIC; losses; microstrip lines; transmission line theory; wideband amplifiers; 16 to 26.5 GHz; 8 dB; 8 to 9.5 dB; Ka-band; SHF; balanced amplifier; low-noise amplifier; microwave active circuits; miniaturized MMIC amplifiers; multilayer structure; numerical analysis; single-stage wideband amplifier; thin dielectric layers; thin film transmission lines; two-stage LNA; Active circuits; Broadband amplifiers; Dielectric thin films; Distributed parameter circuits; Gain; Low-noise amplifiers; MMICs; Nonhomogeneous media; Numerical analysis; Thin film circuits;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
