Bandwidth- and Gain-Enhanced Circularly Polarized Antenna Array Using Sequential Phase Feed
Authors:
- 24 June 2014
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Antennas and Wireless Propagation Letters
- Vol. 13 (15361225) , 1215-1218
Abstract
A technique is developed in this letter to enhance the impedance and axial-ratio (AR) bandwidths as well as broadside gain of a sequential phase (SP) feed 2 × 2 patch array. The proposed antenna is composed of a probe-fed patch, a 2 × 2 corner truncated patch array with a loop, and a slotted metal wall surrounding the feeding structure. The proposed antenna combines the attractive features such as wide impedance and AR bandwidths, low profile, and easiness of design and manufacture. The antenna operating at 5-GHz band is designed and fabricated with overall volume of 1.5 λ 0 ×1.5 λ 0 ×0.06 λ 0 . Measured results show that the antenna array achieves an impedance bandwidth of about 20.8% for |S 11 |<;-10 dB, a 3-dB AR bandwidth of about 17.6%, a peak gain of 11.5 dBi, and a 3-dB gain bandwidth of 13%, which is completely within the impedance and AR bandwidths.Keywords
Funding Information
- National Natural Science Foundation of China (60702163)
- National Science and Technology Major Project of China (2010ZX03007-002-01, 2011ZX03004-003)
This publication has 11 references indexed in Scilit:
- A Sequential-Phase Feed Using a Circularly Polarized Shorted Loop StructureIEEE Transactions on Antennas and Propagation, 2012
- Circularly Polarized Ring-Patch AntennaIEEE Antennas and Wireless Propagation Letters, 2011
- A Circularly Polarized Ring-Antenna Fed by a Serially Coupled Square Slot-RingIEEE Transactions on Antennas and Propagation, 2011
- A Compact Sequential-Phase Feed Using Uniform Transmission Lines for Circularly Polarized Sequential-Rotation ArraysIEEE Transactions on Antennas and Propagation, 2011
- Broadband Circularly Polarized Crossed Dipole With Parasitic Loop Resonators and Its ArraysIEEE Transactions on Antennas and Propagation, 2010
- Circularly Polarized Stacked Annular-Ring Microstrip Antenna With Integrated Feeding Network for UHF RFID ReadersIEEE Antennas and Wireless Propagation Letters, 2010
- Circularly polarised printed crossed dipole antennas with broadband axial ratioElectronics Letters, 2008
- Study on Sequential Feeding Networks for Subarrays of Circularly Polarized Elliptical Dielectric Resonator AntennaIEEE Transactions on Antennas and Propagation, 2007
- Investigations into a cavity-backed circular-patch antennaIEEE Transactions on Antennas and Propagation, 2002
- Application of simulated annealing to design ofserial feedsequentially rotated 2 × 2 antenna arrayElectronics Letters, 2000