Frequency Reconfigurable and Miniaturized Substrate Integrated Waveguide Interdigital Capacitor (SIW-IDC) Antenna

A novel frequency reconfigurable substrate integrated waveguide-interdigital capacitor (SIW-IDC) antenna is presented. The antenna is designed based on a composite right/left-handed (CRLH) resonator, which is realized by the SIW-IDC. Thanks to CRLH characteristics, the antenna size is reduced. Since...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2014-03, Vol.62 (3), p.1039-1045
Main Authors: Somarith, Sam, Hyunseong, Kang, Sungjoon, Lim
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Capacitance
Capacitors
Composite right/left-handed (CRLH)
Computer simulation
Dipole antennas
Electric potential
frequency reconfigurable antenna
Impedance matching
interdigital capacitor (IDC)
Noise levels
Resonant frequencies
Resonant frequency
Resonators
substrate integrated waveguide (SIW)
Varactors
Voltage
zeroth-order resonance (ZOR)
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Description
Summary:A novel frequency reconfigurable substrate integrated waveguide-interdigital capacitor (SIW-IDC) antenna is presented. The antenna is designed based on a composite right/left-handed (CRLH) resonator, which is realized by the SIW-IDC. Thanks to CRLH characteristics, the antenna size is reduced. Since the IDC determines the resonant frequency, a varactor diode is embedded on the interdigital slot of the short-ended SIW. Its zeroth-order resonance (ZOR) frequency is varied from 4.13 GHz to 4.50 GHz by changing the bias voltage from 0 V to 36 V while keeping good impedance matching better than 15 dB. The radiation performance is numerically and experimentally investigated. Very good agreements between the simulated and measured S-parameters and radiation patterns are observed.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2013.2281662