Method of Decoupling and Independently Tuning the Second Mode of a Microstrip-Fed Slot Antenna Using Series Inductive Loading

Boldaji, Ashkan and Antoniades, Marco A. (2013) Method of Decoupling and Independently Tuning the Second Mode of a Microstrip-Fed Slot Antenna Using Series Inductive Loading. IEEE Antennas and Wireless Propagation Letters, 12 1017-1020. doi:10.1109/LAWP.2013.2278294

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Author Boldaji, Ashkan
Antoniades, Marco A.
Title Method of Decoupling and Independently Tuning the Second Mode of a Microstrip-Fed Slot Antenna Using Series Inductive Loading
Journal name IEEE Antennas and Wireless Propagation Letters   Check publisher's open access policy
ISSN 1536-1225
1548-5757
Publication date 2013-01
Year available 2013
Sub-type Article (original research)
DOI 10.1109/LAWP.2013.2278294
Open Access Status
Volume 12
Start page 1017
End page 1020
Total pages 4
Place of publication Piscataway, NJ United States
Publisher Institute of Electrical and Electronics Engineers
Collection year 2014
Language eng
Formatted abstract
 In this letter, a systematic method of decoupling and tuning the second mode of a half-wavelength microstrip-fed slot antenna is presented. This is achieved by introducing a series lumped inductive load at the center of the top edge of a printed slot. At this location, the first (λ/2) mode has a current null, therefore the addition of the loading inductor does not affect the mode. However, the electrical length of the second (λ) mode is increased, allowing independent tuning of this mode over a wide frequency range, simply by changing the value of the inductance. The flexibility of the approach is validated by integrating an inductively loaded, dual-band slot into a compact, microstrip-fed inverted-F antenna to target common cellular and wireless bands (GSM-900, PCS, UMTS-2100, WLAN-2.4 GHz). The multiband antenna is found by measurement to exhibit better than-6 dB S11 from 880-985 and 1810-2510 MHz, with radiation efficiencies between 84%-96%. The antenna hence demonstrates the suitability of the loading method for achieving multiband support in compact antennas that incorporate a slot in the ground plane.
Keyword Microstrip antennas
Mobile antennas
Multifrequency antennas
Slot Antennas
Inverted F Antenna
Ground Slots
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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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 3 times in Scopus Article | Citations
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