Title :
Compact Design of Triple-Band Circularly Polarized Quadrifilar Helix Antennas
Author :
Xudong Bai ; Jingjing Tang ; Xianling Liang ; Junping Geng ; Ronghong Jin
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
This letter introduces the compact design of triple-band circularly polarized quadrifilar helix antennas (QHAs) possessing the characteristics of wide beam, high gain at the low elevation, and high stability of the phase center. The available triple-band operation is achieved through the incorporation of a UHF-band QHA and an L/S-band QHA, which are assembled in a “piggyback” fashion. The UHF-band QHA is fed by a compact microstrip feed network, while the L/S-band QHA is fed by a split coax balun. The measured results coincide well with the simulated ones, which verified the effectiveness of the proposed compact design .
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; baluns; helical antennas; microstrip antennas; multifrequency antennas; L-S-band QHA; UHF-band QHA; compact design; compact microstrip feed network; high phase center stability; piggyback fashion; split coax balun; triple-band circularly polarized quadrifilar helix antennas; wide beam characteristics; Antenna measurements; Antenna radiation patterns; Frequency measurement; Helical antennas; Stability analysis; UHF measurements; Circularly polarized; phase center; quadrifilar helical antenna (QHA); triple-band; wide beam;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2305592
