Bandwidth Enhancement of a Polarization-Reconfigurable Patch Antenna With Stair-Slots on the Ground
- 20 March 2014
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Antennas and Wireless Propagation Letters
- Vol. 13 (15361225), 579-582
- https://doi.org/10.1109/lawp.2014.2312971
Abstract
A polarization-reconfigurable rectangular patch antenna for bandwidth enhancement is proposed. This antenna has stair-slots on the ground and two p-i-n diodes are used for switching the antenna's polarization in linear polarization (LP), left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP). The structure is concise and easy to optimize, and dc bias network is very simple. The measured impedance (-10-db S11) and 3-dB axial-ratio (AR) bandwidths are about 180 and 37 MHz, respectively, at the center frequency around 2.46 GHz for both LHCP and RHCP. Compared to the reference antennas (antenna with loop slots on the ground and antenna with L-shaped slots on the ground), the bandwidths of -10-dB S11 and 3-dB AR are greatly enhanced. The asymmetrical slotted ground excites TM10 and TM01 modes with different resonant frequency to generate CP radiation, and because of the stair-slots, instead of loop slots and L-shaped slots, the lower resonant frequency decreases and the higher one increases. Thus, the bandwidths are improved. The antenna has good switchable and radiation performances. It could be used for wireless local area network (WLAN) (2.4-2.5 GHz) in wireless communication systems.Keywords
This publication has 17 references indexed in Scilit:
- Circular Polarization Reconfigurable Wideband E-Shaped Patch Antenna for Wireless ApplicationsIEEE Transactions on Antennas and Propagation, 2012
- Circular Polarization and Polarization Reconfigurable Designs for Annular Slot AntennasIEEE Transactions on Antennas and Propagation, 2012
- Circular/Linear Polarization Reconfigurable Antenna on Simplified RF-MEMS Packaging Platform in K-BandIEEE Transactions on Antennas and Propagation, 2012
- A Polarization Reconfigurable Patch Antenna With Loop Slots on the Ground PlaneIEEE Antennas and Wireless Propagation Letters, 2012
- An Electronically Reconfigurable Microstrip Antenna With Switchable Slots for Polarization DiversityIEEE Transactions on Antennas and Propagation, 2011
- A Reconfigurable Circularly Polarized Microstrip Antenna With a Slotted Ground PlaneIEEE Antennas and Wireless Propagation Letters, 2010
- Effect of Antenna Polarization Diversity on MIMO System CapacityIEEE Antennas and Wireless Propagation Letters, 2010
- Polarization Reconfigurable U-Slot Patch AntennaIEEE Transactions on Antennas and Propagation, 2010
- Polarization Reconfigurable Slot Antenna With a Novel Compact CPW-to-Slotline Transition for WLAN ApplicationIEEE Antennas and Wireless Propagation Letters, 2010
- Reconfigurable circularly polarized antenna for short-range communication systemsIEEE Transactions on Microwave Theory and Techniques, 2006