DocumentCode :
884806
Title :
A 170 GHz 45 
Hybrid for Submillimeter Wave Sideband Separating Subharmonic Mixers
Author :
Sobis, Peter J. ; Stake, Jan ; Emrich, Anders
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg
Volume :
18
Issue :
10
fYear :
2008
Firstpage :
680
Lastpage :
682
Abstract :
We present a 135deg/45deg phase shifter hybrid intended to be used in subharmonic sideband separation mixer schemes at submillimeter-wave frequencies. The design consists of an increased height 90deg 6-arm branch guide coupler with a three stub loaded differential line 45deg phase shifter at the output. The device has been implemented at G-band in an E-plane WR-05 splitblock design with a center frequency of 170 GHz and 15 % bandwidth. Measured S-parameter are in good agreement with simulations showing an isolation and return loss better than 20 dB and an amplitude and phase imbalance within 0.4 dB and 2deg, respectively.
Keywords :
S-parameters; millimetre wave directional couplers; millimetre wave phase shifters; submillimetre wave mixers; waveguide couplers; G-band; S-parameters; frequency 170 GHz; millimetre wave directional couplers; millimetre wave phase shifters; phase shifter hybrid; submillimeter wave sideband separating subharmonic mixers; waveguide couplers; Bandwidth; Design methodology; Fabrication; Frequency; Instruments; Laboratories; Loss measurement; Phase measurement; Phase shifters; Rectangular waveguides; Millimeter wave directional couplers; millimeter wave phase shifters; power dividers; rectangular waveguide filters; terahertz waveguide couplers;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2008.2003463
Filename :
4639562
Link To Document :
