%0 Journal Article
%T Reconfigurable 3/6 dB Novel Branch Line Coupler
%A Tamer Gaber Abouelnaga
%A Ashraf Shawky Mohra
%J Open Journal of Antennas and Propagation
%P 7-22
%@ 2329-8413
%D 2017
%I Scientific Research Publishing
%R 10.4236/ojapr.2017.51002
%X In this paper, a new idea of reconfigurable  3/6 dB branch line coupler is proposed. The proposed coupler is tuned through a simple open and short circuit at the coupler¡¯s branches¡¯ edges. At the short edges case, a 3 dB branch line coupler is obtained. In this case, the coupler¡¯s branches are considered as microstrip transmission lines with 0.3 mm slot width which is etched in each coupler¡¯s branch. At the open edges case, the coupler¡¯s branches are considered as asymmetric coupled microstrip lines. In this case, a 6 dB branch line coupler is obtained. Both CST and IE3D simulators are used to optimize the reconfigurable 3/6 dB branch line coupler dimensions. As a prototypes, two BLCs are designed, analyzed and tested at the ¡°on¡± and ¡°off¡± states at 2.5 GHz. The measured <em>S</em>-parameters confirm the proposed concept of the reconfigurable 3/6 dB branch line coupler.
%K Branch Line Coupler
%K Microstrip Lines
%K Asymmetric Coupled Microstrip Lines
%K 3/6 dB Coupler
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=74504