Self-phasing of quadrifilar helix antenna by relative axial displacement of bifilars
Artikel i vetenskaplig tidskrift, 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
Författare
Adil Masoud Qureshi
Institute of Space Technology, Islamabad
Muhammad Amin
Institute of Space Technology, Islamabad
Waqar Ali Shah
Chalmers, Signaler och system
Microwave and Optical Technology Letters
0895-2477 (ISSN) 1098-2760 (eISSN)
Vol. 57 2 430-432Ämneskategorier (SSIF 2011)
Atom- och molekylfysik och optik
Elektroteknik och elektronik
DOI
10.1002/mop.28867