Reconfigurable coplanar inverted-F antenna with electronically controlled ground slot

Razali, A. R. and Bialkowski, M. E. (2011) Reconfigurable coplanar inverted-F antenna with electronically controlled ground slot. Progress In Electromagnetics Research B, 34 63-76. doi:10.2528/PIERB11072504


Author Razali, A. R.
Bialkowski, M. E.
Title Reconfigurable coplanar inverted-F antenna with electronically controlled ground slot
Journal name Progress In Electromagnetics Research B   Check publisher's open access policy
ISSN 1937-6472
Publication date 2011
Sub-type Article (original research)
DOI 10.2528/PIERB11072504
Open Access Status DOI
Volume 34
Start page 63
End page 76
Total pages 14
Place of publication Cambridge, MA, United States
Publisher Electromagnetics Academy
Language eng
Abstract In this article, a coplanar inverted-F antenna with an electronically controlled ground slot enabling reconfigurability is proposed. Initially a quarter wavelength coplanar inverted-F radiator is designed to operate at 900 MHz. To minimize its size, the radiator is folded to occupy an area of about 10 × 40 mm2. Next, a ground slot is introduced to excite another resonance at around 1850 MHz without affecting the 900 MHz operation. The slot is loaded with three pairs of PIN diode switches with simple biasing circuits to vary its resonant frequency. The proposed reconfigurable antenna is fabricated and experimentally tested. A good agreement is achieved between the simulated and measured return loss of the antenna showing the experimental impedance bandwidth covering GSM900, PCS1900 and UMTS2100 services. In these frequency bands, the antenna offers nearly omni-directional radiation patterns with measured peak gain between 1.4 dBi to 3.45 dBi.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Information Technology and Electrical Engineering Publications
 
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