Polarization Reconfigurable U-Slot Patch Antenna
- 1 July 2010
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 58 (10), 3383-3388
- https://doi.org/10.1109/tap.2010.2055808
Abstract
A compact U-slot microstrip patch antenna with reconfigurable polarization is proposed for wireless local area network (WLAN) applications. PIN diodes are appropriately positioned to change the length of the U-slot arms, which alters the antenna's polarization state. Two antenna prototypes with identical dimensions are designed, fabricated and measured. The first antenna prototype enables switching between linear and circular polarization by using a PIN diode and a capacitor located on the U-slot. The second antenna prototype uses two PIN diodes to switch between the two circular polarization senses. A good impedance match (S11 ≤-10 dB) for both linear and circular polarization is achieved from 5.725 to 5.85 GHz, a band typically used for WLAN applications, and the 3 dB axial ratio bandwidth is greater than 2.8%. Details of the simulated and measured reflection coefficient, axial ratio, gain and radiation patterns are presented.Keywords
This publication has 11 references indexed in Scilit:
- Perturbed Square-Ring Slot Antenna With Reconfigurable PolarizationIEEE Antennas and Wireless Propagation Letters, 2009
- Reconfigurable Single Port Antenna With Circular Polarization DiversityIEEE Transactions on Antennas and Propagation, 2009
- New Proximity Coupled Feeding Method for Reconfigurable Circularly Polarized Microstrip Ring AntennasIEEE Transactions on Antennas and Propagation, 2008
- Single-Fed Microstrip Patch Antenna With Switchable PolarizationIEEE Transactions on Antennas and Propagation, 2008
- Circularly Polarized U-Slot AntennaIEEE Transactions on Antennas and Propagation, 2007
- A Novel Reconfigurable Microstrip Antenna With Switchable Circular PolarizationIEEE Antennas and Wireless Propagation Letters, 2007
- Polarization-agile antennasIEEE Antennas and Propagation Magazine, 2006
- A reconfigurable slot antenna with switchable polarizationIEEE Microwave and Wireless Components Letters, 2003
- A reconfigurable patch antenna using switchable slots for circular polarization diversityIEEE Microwave and Wireless Components Letters, 2002
- Circularly polarised antenna with switchable polarisation senseElectronics Letters, 2000