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A planar eight‐way compact substrate integrated waveguide based radial power divider with broadband performance
Author(s) -
Guha Mallick Souma,
Gande Arun Kumar,
Biswas Bijit,
Chatterjee Sayan,
Poddar D. R.
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32170
Subject(s) - broadband , power dividers and directional couplers , planar , return loss , bandwidth (computing) , center frequency , materials science , wilkinson power divider , impedance matching , transformer , electrical impedance , microstrip , insertion loss , electrical engineering , optics , engineering , optoelectronics , physics , telecommunications , computer science , frequency divider , band pass filter , voltage , antenna (radio) , computer graphics (images)
A compact broadband eight‐way substrate integrated waveguide (SIW) based radial power divider at C‐band is presented in the article. Bandwidth enhancement is achieved by employing planar impedance transformer consisting of an annular slot and circular patch at the input and output feed positions. The equivalent circuit analysis helps in the optimization of the annular slot and circular patch on the substrate. The proposed compact power divider has fractional bandwidth of 53.5% for 15 dB input return loss. Broadband characteristics are achieved without using any bulky mechanical arrangement for feed matching. It has a size of 0.72 λ g 2 and the measured amplitude imbalance is within 0.5 dB at the center frequency of 6.6 GHz.