A wide-band circularly polarized L-probe coupled patch antenna for dual-band operation
- 8 August 2005
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 53 (8) , 2636-2644
- https://doi.org/10.1109/tap.2005.851818
Abstract
This paper presents the design and testing of a dual-band circularly polarized patch antenna. The portion of the antenna for upper band operation consists of two stacked circular patches which are supported by the plastic posts in the air. The patches are excited by four L-probes which are located sequentially under the circumference of the lower patch. The distance between the upper patch and the ground plane is about 0.1 free space wavelength at 2.492 GHz. This upper band portion possesses an impedance bandwidth of 54.9% (SWR/spl les/2) and a 3-dB axial ratio bandwidth of 47.7%. The antenna peak gain is 8 dBi. For dual-band operation, a larger circular patch for lower band operation is added below the upper band patches. The lower band patch is also coupled by four L-probes sequentially. The integrated antenna has an impedance bandwidth of 43.9% (SWR/spl les/2) and a 3-dB axial ratio bandwidth of 33% for the lower band, while an impedance bandwidth of 55.2% (SWR/spl les/2) and a 3-dB axial ratio bandwidth of 44.7% can be obtained for the upper band. Both bands have a peak gain of around 7.8 dBi.Keywords
This publication has 11 references indexed in Scilit:
- A study of compact microstrip resonant cells with applications in active circuitsMicrowave and Optical Technology Letters, 2003
- A dual-band shorted patch antenna proximity-fed by a combined L- and T-probe feed structureMicrowave and Optical Technology Letters, 2003
- Aperture-coupled patch antennas with wide-bandwidth and dual-polarization capabilitiesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- A dual-polarized L-probe patch antennaPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Analysis and design of L-probe proximity fed-patch antennasIEEE Transactions on Antennas and Propagation, 2001
- Experimental study of a microstrip patch antenna with an L-shaped probeIEEE Transactions on Antennas and Propagation, 2000
- Circular patch antenna with an L‐shaped probeMicrowave and Optical Technology Letters, 1999
- Broadband microstrip patch antennaElectronics Letters, 1998
- A dual-band circularly polarized aperture-coupled stacked microstrip antenna for global positioning satelliteIEEE Transactions on Antennas and Propagation, 1997
- Dual aperture-coupled microstrip antenna for dual or circular polarisationElectronics Letters, 1987