Premium
Self‐phasing of quadrifilar helix antenna by relative axial displacement of bifilars
Author(s) -
Masoud Qureshi Adil,
Amin Muhammad,
Ali Shah Waqar
Publication year - 2015
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.28867
Subject(s) - helical antenna , phaser , optics , microwave , axial ratio , helix (gastropod) , physics , bandwidth (computing) , circular polarization , antenna (radio) , engineering , electrical engineering , coaxial antenna , telecommunications , radiation pattern , geology , microstrip , paleontology , snail
Self‐phasing can be achieved in a quadrifilar helix antenna (QHA) by displacing one of the bifilars along the axis of the helix, yielding a circularly polarized cardioid shaped pattern. Impedance bandwidth of 10% (2105–2345 MHz) has been achieved with Front to back ratio greater than 10 dB. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:430–432, 2015