Open AccessHolistic design strategy for high‐selectivity low‐loss integrated millimetre‐wave image‐reject filters
Author(s) -
Thian Mury,
Fusco Vincent
Publication year - 2015
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
ISSN - 1751-8598
DOI - 10.1049/iet-cds.2014.0335
Subject(s) - filter (signal processing) , electronic engineering , resonator , prototype filter , transmission (telecommunications) , m derived filter , materials science , optics , filter design , acoustics , computer science , electrical engineering , optoelectronics , engineering , telecommunications , physics
To alleviate practical limitations in the design of millimetre‐wave on‐chip image‐reject filters, systematic design methodologies are presented. Three low‐order filters with high‐selectivity and low‐loss characteristics are designed and compared. Transmission zeroes are created by means of a quarter‐wave transmission line (filter 1) and a series LC resonator (filters 2 and 3). Implemented on silicon germanium, the filters occupy 0.125, 0.064 and 0.079 mm 2 chip area including pads. The measured transmission losses across 81–86 GHz E‐band frequency range are 3.6–5.2 dB for filter 1, 3.1–4.7 dB for filter 2 and 3.6–5 dB for filter 3 where rejection levels at the image band are >30 dB.