Self-phasing of quadrifilar helix antenna by relative axial displacement of bifilars
Journal article, 2015
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.
circularly polarized
QHA
self-phasing
helix
Author
Adil Masoud Qureshi
Institute of Space Technology, Islamabad
Muhammad Amin
Institute of Space Technology, Islamabad
Waqar Ali Shah
Chalmers, Signals and Systems
Microwave and Optical Technology Letters
0895-2477 (ISSN) 1098-2760 (eISSN)
Vol. 57 2 430-432Subject Categories (SSIF 2011)
Atom and Molecular Physics and Optics
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1002/mop.28867