Open AccessWideband micromachined broadside coupled Schiffman phase shifter
Author(s) -
Sutton N.A.,
Filipovic D.S.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.4069
Subject(s) - phase shift module , insertion loss , wideband , sensitivity (control systems) , broadside , phase (matter) , materials science , amplitude , fabrication , broadband , port (circuit theory) , coaxial , surface micromachining , optics , acoustics , electronic engineering , optoelectronics , physics , electrical engineering , engineering , medicine , alternative medicine , pathology , quantum mechanics
A 15–45 GHz broadside coupled rectangular coaxial line based phase shifter is demonstrated. An analysis, the design, fabrication, measurements and a sensitivity study are conducted and discussed. Amplitude and phase imbalances of <0.25 dB and <2.5°, respectively, are measured. Input port reflection coefficients < −10 dB and an insertion loss below 0.6 dB are also obtained. A conducted sensitivity study shows the small dependence of the device performance on the process variations. The presented results may pave the way for multi‐octave analogue phase shifters and beamformers throughout the millimetre‐wave range.