Wide band side fed bifilar helix antenna caged in passive quadrifilar helix structure

Author

Shah, Waqar A. ; Shoaib, Sultan ; Islam, Qamarul ; Amin, Muhammad

Author_Institution

Dept. of Commun. Syst. Eng., Inst. of Space Technol., Islamabad, Pakistan

fYear

2010

fDate

10-14 Jan. 2010

Firstpage

597

Lastpage

600

Abstract

In this paper a wideband side fed bifilar helix antenna enclosed in a cage of passive quadrifilar helix antenna (QHA) is presented. Simulation results show that the bandwidth of the side fed bifilar for VSWR Â¿ 2 is increased from 1175-1240 MHz to that of 870-1535 MHz (greater than tenfold increase in bandwidth) by placing inside the passive QHA as compared to the side fed bifilar structure when simulated in isolation with predominantly omni-directional radiation pattern in the range of 500-1600 MHz. The measured results show that VSWR of the antenna is less than or equal to 2.4 from 281 MHz to greater than 2 GHz.

Keywords

antenna radiation patterns; broadband antennas; VSWR; omni-directional radiation pattern; passive quadrifilar helix antenna; quadrifilar helix structure; wideband side fed bifilar helix antenna; Antenna feeds; Antenna measurements; Antenna radiation patterns; Artificial satellites; Bandwidth; Broadband antennas; Dipole antennas; Helical antennas; Systems engineering and theory; Wire; Quadrifilar helix antenna; side-fed bifilar helix antenna; wide band antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium (RWS), 2010 IEEE

Conference_Location

New Orleans, LA

Print_ISBN

978-1-4244-4725-1

Electronic_ISBN

978-1-4244-4726-8

Type

conf

DOI

10.1109/RWS.2010.5434217

Filename

5434217