Title :
Microstrip directional coupler with flat coupling and high isolation
Author :
Li, J.L. ; Qu, S.-W. ; Xue, Q.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong
Abstract :
Based on the open-circuited slotline to realise capacitive compensation, a microstrip directional coupler with high isolation is investigated. Meanwhile, by adding external matching networks at the input/output ports, bandwidth is enhanced and a flat coupling is obtained. Centred at 2.4 GHz, a 3 dB directional coupler is designed, fabricated and examined. Both simulated results and measured data are presented, and good agreement between them is observed
Keywords :
microstrip directional couplers; slot line components; 2.4 GHz; capacitive compensation; external matching networks; flat coupling; high isolation; microstrip directional coupler; open-circuited slotline;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20073812
