A miniature high gain and broadband MMIC distributed amplifier
Journal
Conference Proceedings - 33rd European Microwave Conference, EuMC 2003
Journal Volume
2
Pages
615-618
Date Issued
2003
Author(s)
Abstract
A new miniature MMIC distributed amplifier, which combines conventional distributed amplifier (CDA) to extend wider bandwidth and a single-stage cascade amplifier (SSCA) as a gain stage for high gain over several octaves of bandwidth (called CDA-SSCA) is presented in this paper. The low pass filter (LPF) configuration is adopted between the CDA and SSCA while resistive terminations are used in the biasing circuitry to provide broadband matching. The measured small signal gain is 22/spl plusmn/1.5 dB from 0.5 to 27 GHz with a chip size of 1.5 /spl times/ 1 mm/sup 2/. Another two broadband distributed amplifiers are also designed for comparison and with the same chip size. One is cascaded the two single-stage distributed amplifiers, called two-cascaded single-stage distributed amplifier (2-CSSDA), and the other is a CDA cascaded with a CSSDA, called (CDA-CSSDA). This CDA-SSCA produces a significantly higher gain than the other two designs 2-CSSDA and CSD-CSSDA within the same bandwidth. The flat group delay of this design also proves the feasibility for digital optical communication applications. © 2003 EUMA.
Other Subjects
Bandwidth; Low pass filters; Monolithic microwave integrated circuits; Optical communication; Broad band matching; Cascade amplifiers; Communication application; Conventional distributed amplifiers; Distributed amplifier; Flat group delay; Single stage; Small signal gain; Broadband amplifiers
Type
conference paper