Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711131
