Title :
New High Directivity Coupler Design Using Feed-forward Compensation Technique
Author :
Bensmida, Souheil ; Ghannouchi, Fadhel M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB
Abstract :
In this paper, an original high directivity directional coupler is presented. The proposed structure consists of a dual-directional coupler connected at its coupled terminations to a feed-forward compensation circuit. The compensation circuit is used to increase the coupler isolation factor of the obtained directional coupler. The directivity of a commercial dual-directional coupler has been improved by 40 dB using the proposed method.
Keywords :
directional couplers; feedforward; microwave circuits; dual-directional coupler; feed-forward compensation circuit; high directivity directional coupler; isolation factor; Anisotropic magnetoresistance; Circuits and systems; Coupling circuits; Design engineering; Directional couplers; Feedforward systems; Instruments; Microwave theory and techniques; Periodic structures; Propagation delay;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751420
