A wideband uniplanar 180-degree hybrid ring coupler

A wideband uniplanar 180-degree hybrid ring coupler

A wideband uniplanar 180-degree hybrid ring coupler implemented in coplanar and slot transmission lines is described. An equivalent circuit of the device is developed. The device is analyzed on a computer and its characteristics are optimized. Experimental results show that the inphase and antiphase...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) Vol. 43; no. 2; pp. 236 - 239
Main Authors: Yanev, A. S., Todorov, B. N., Ranev, V. Z.
Format: Journal Article
Language:English
Published: New York Springer Nature B.V 01-03-2000
Subjects:
Broadband
Couplers
Equivalent circuits
Frequencies
Transmission lines
Online Access:Get full text
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Description
Summary:A wideband uniplanar 180-degree hybrid ring coupler implemented in coplanar and slot transmission lines is described. An equivalent circuit of the device is developed. The device is analyzed on a computer and its characteristics are optimized. Experimental results show that the inphase and antiphase power division losses are <1.5 dB and the port-to-port isolation is >20 dB over frequency bands ranging from 4 to 12 GHz. The measured characteristics are in good agreement with the calculated ones.
ISSN:0020-4412
1608-3180
DOI:10.1007/BF02759213