Method of isolating and tuning the two dominant modes of a printed Inverted-F Antenna

Boldaji, Ashkan and Antoniades, Marco A. (2013) Method of isolating and tuning the two dominant modes of a printed Inverted-F Antenna. Ieee Transactions On Antennas and Propagation, 61 7: 3420-3426. doi:10.1109/TAP.2013.2256454


Author Boldaji, Ashkan
Antoniades, Marco A.
Title Method of isolating and tuning the two dominant modes of a printed Inverted-F Antenna
Journal name Ieee Transactions On Antennas and Propagation   Check publisher's open access policy
ISSN 0018-926X
1558-2221
Publication date 2013-07
Year available 2013
Sub-type Article (original research)
DOI 10.1109/TAP.2013.2256454
Volume 61
Issue 7
Start page 3420
End page 3426
Total pages 7
Place of publication New Jersey, NY United States
Publisher Institute of Electrical and Electronics Engineers
Collection year 2014
Language eng
Abstract A systematic method for decoupling and increasing the tunability of the first and third-order resonant modes of a compact, printed inverted-F antenna is presented. By identifying and utilizing surface-current symmetry in the third mode of a single-meander structure, a branch substitution is performed to support a new resonant boundary condition and allow independent tuning of the third mode. This allows a third-to-first-order harmonic frequency ratio of less than 3:1 to be achieved, with simple design equations presented to provide the antenna designer with flexibility for targeting certain bands. The methodology is further validated by incorporating two such branches and a ground slot to demonstrate a multiband inverted-F antenna targeting typical cellular and wireless bands (GSM-900, UMTS-2100 and WLAN-2.4 GHz). The 65 ×,110 mm manufactured antenna exhibits better than 6 dB S11from 880-1000 MHz, 1920-1980 MHz, and 2060-2640 MHz, with measured radiation efficiencies in the range of 72 to 93%. The close agreement between simulation and measurement demonstrates the suitability of the design methodology for use in compact, multiband antenna designs for personal communication devices.
Keyword Microstrip antennas
mobile antennas
multiband antennas
Ground slots
Mobile phone
Band
Operation
Pifa
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Information Technology and Electrical Engineering Publications
 
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