Compact dual-band antenna using inverted-L loop and inner rectangular loop for WLAN applications

A small loop antenna for WLAN applications is proposed, which is comprised of an inverted-L loop and an inner rectangular loop achieving dual-band resonances within a compact size of 4.5 mm × 6.5 mm. A series capacitor in the feeding loop is employed for impedance matching of both bands and a shunt...

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Bibliographic Details
Published in:Electronics letters 2015-11, Vol.51 (23), p.1843-1844
Main Authors: Qu, L, Zhang, R, Kim, H.H, Kim, H
Format: Article
Language:English
Subjects:
Antennas
Antennas and propagation
bandwidth 120 MHz
bandwidth 1260 MHz
Capacitors
compact dual‐band antenna
dual‐band resonances
Feeding
frequency 2.4 GHz
frequency 5 GHz
Impedance matching
inner rectangular loop
inverted‐L loop
Local area networks
Loop antennas
microwave antennas
multifrequency antennas
Noise levels
shunt capacitor
small loop antenna
wireless LAN
Wireless networks
WLAN applications
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Description
Summary:A small loop antenna for WLAN applications is proposed, which is comprised of an inverted-L loop and an inner rectangular loop achieving dual-band resonances within a compact size of 4.5 mm × 6.5 mm. A series capacitor in the feeding loop is employed for impedance matching of both bands and a shunt capacitor for high band, respectively. The proposed compact antenna is able to achieve −10 dB impedance bandwidth of 120 and 1260 MHz and average radiation efficiency of 69 and 61% in the 2.4 GHz band and the 5 GHz band, respectively.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2015.2075