Title :
Folded Half Mode Substrate Integrated Waveguide 3 dB Coupler
Author :
Zhai, Guo Hua ; Hong, Wei ; Wu, Ke ; Chen, Ji Xin ; Chen, Peng ; Wei, Jing ; Tang, Hong Jun
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing
Abstract :
In this letter, novel compact 3 dB double-slot and single-slot couplers are proposed and implemented based on folded half mode substrate integrated waveguide (FHMSIW). The size of the FHMSIW coupler is reduced by nearly 50% and 75% compared with half-mode substrate integrated waveguide coupler and substrate integrated waveguide coupler, respectively. Prototype couplers at X-band are fabricated and measured and good performance in bandwidth, insertion loss, and balance are achieved.
Keywords :
microstrip circuits; rectangular waveguides; double-slot coupler; folded half mode substrate integrated waveguide; microstrip circuit; rectangular waveguide; single-slot coupler; Bandwidth; Coupling circuits; Insertion loss; Magnetic confinement; Microstrip; Millimeter wave technology; Planar waveguides; Printed circuits; Rectangular waveguides; Substrates; Coupler; folded half mode substrate integrated waveguide (FHMSIW); half mode substrate integrated waveguide (HMSIW); substrate integrated waveguide (SIW);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.2001006
