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- Title
Ultrawide Bandwidth 180°-Hybrid-Coupler in Planar Technology.
- Authors
Scherr, Steffen; Ayhan, Serdal; Adamiuk, Grzegorz; Pahl, Philipp; Zwick, Thomas
- Abstract
A new concept of an ultrawide bandwidth 180°-hybrid-coupler is presented. The ultrawideband design approach is based on the excitation of a coplanar waveguide (CPW) mode and a coupled slot line (CSL) mode in the same double slotted planar waveguide. Thecoupler is suitable for realization in planar printed circuit board technology. For verification of the new concept a prototype was designed for the frequency range from3GHz to 11GHz, built, andmeasured. The measurement results presented in this paper show a good agreement between simulation andmeasurement and demonstrate the very broadband performance of the new device. The demonstrated coupler with a size of 40mm× 55mm exhibits a fractional bandwidth of 114% centered at 7GHz with a maximum amplitude imbalance of 0.8 dB and a maximum phase imbalance of 5°.
- Subjects
ULTRA-wideband devices; BANDWIDTHS; PRINTED circuits; PERFORMANCE evaluation; SLOT antennas
- Publication
International Journal of Microwave Science & Technology, 2014, p1
- ISSN
1687-5826
- Publication type
Article
- DOI
10.1155/2014/486051