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- Title
Analysis and Design of a GaAs Monolithic Tunable Polyphase Filter in S/C Bands.
- Authors
Leggieri, Alberto; Passi, Davide; Gagliesi, Daniele; Di Paolo, Franco
- Abstract
This paper proposes a new topology of a 2-Stages Active Polyphase Filter (APPF) in MMIC GaAs technology. This new topology, named "radial", allows a greater balancing of output signals phases and amplitudes, over the actual APPF's at the state of the art. In this paper an ex-novo study is shown and synthesis formulas for the APPF are provided. The MMIC simulations in 1- 5GHz bandwidth show a tunable Image Rejection Ratio (IRR) greater than 40dB, a worst case input/output matching of 7.8dB and a maximum insertion loss of 10.8dB. By comparison with the tandem topology, as will be shown in the following, the radial one allows a significant improvement in the electrical performances.
- Subjects
GALLIUM arsenide transistors; MONOLITHIC microwave integrated circuits; MULTIPHASE flow; BANDWIDTHS; INSERTION loss (Telecommunication)
- Publication
Journal of Microwaves, Optoelectronics & Electromagnetic Applications, 2015, Vol 14, Issue 1, pAoP14
- ISSN
2179-1074
- Publication type
Article
- DOI
10.1590/2179-10742015v14i1423