A cavity-backed broadband circularly polarized slot/strip loop antenna with a simple feeding structure

Author

Pan, B. ; Li, R.L. ; Papapolymerou, J. ; Laskar, J. ; Tentzeris, M.M.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA

fYear

2006

fDate

9-14 July 2006

Firstpage

2595

Lastpage

2598

Abstract

A cavity-backed loop antenna with a simple feeding structure is proposed for broadband circularly polarized (CP) radiation. The proposed antenna configuration consists of a slot loop and a strip loop. The slot loop radiates a CP wave at a lower frequency while the strip loop produces CP radiation at a higher frequency. A combination of the two frequencies leads to a bandwidth enhancement. The slot/strip loop antenna is fed by a single straight microstrip line. It is demonstrated that the cavity-backed slot/strip loop antenna can achieve an axial ratio (les3 dB) bandwidth of 20% with good impedance matching

Keywords

antenna feeds; broadband antennas; electromagnetic wave polarisation; impedance matching; loop antennas; microstrip lines; slot antennas; antenna configuration; axial ratio bandwidth; bandwidth enhancement; broadband circularly polarized radiation; cavity-backed broadband circularly polarized slot loop antenna; impedance matching; simple feeding structure; single straight microstrip line; strip loop antenna; Antenna feeds; Bandwidth; Broadband antennas; Dipole antennas; Frequency; Helical antennas; Microstrip antennas; Polarization; Slot antennas; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium 2006, IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

1-4244-0123-2

Type

conf

DOI

10.1109/APS.2006.1711131

Filename

1711131