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Frequency Reconfigurable and Miniaturized Substrate Integrated Waveguide Interdigital Capacitor (SIW-IDC) Antenna
- Authors
- Sam, Somarith; Kang, Hyunseong; Lim, Sungjoon
- Issue Date
- Mar-2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Composite right/left-handed (CRLH); frequency reconfigurable antenna; interdigital capacitor (IDC); substrate integrated waveguide (SIW); zeroth-order resonance (ZOR)
- Citation
- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, v.62, no.3, pp 1039 - 1045
- Pages
- 7
- Journal Title
- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
- Volume
- 62
- Number
- 3
- Start Page
- 1039
- End Page
- 1045
- ISSN
- 0018-926X
1558-2221
- Abstract
- 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.
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