Dual-Band Circularly Polarized Dielectric Resonator Antenna for WLAN and WiMAX Applications
In this paper, a new dual-band circularly polarized (CP) dielectric resonator antenna for WLAN and WiMAX applications is proposed. The dielectric resonator has an asymmetric Y-shaped geometry. By properly selecting the length of the arms, the pairs of fundamental (TE<inline-formula> <math d...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/20/4/1137 |
| Summary: | In this paper, a new dual-band circularly polarized (CP) dielectric resonator antenna for WLAN and WiMAX applications is proposed. The dielectric resonator has an asymmetric Y-shaped geometry. By properly selecting the length of the arms, the pairs of fundamental (TE<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>111</mn> </msub> </semantics> </math> </inline-formula>) and second-order (TE<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>211</mn> </msub> </semantics> </math> </inline-formula>) are excited separately at the design frequencies to radiate the CP wave. The measurement shows that the fabricated antenna exhibits a wide impedance bandwidth for |S<inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mrow></mrow> <mn>11</mn> </msub> <mrow> <mo>|</mo> <mo><</mo> </mrow> </mrow> </semantics> </math> </inline-formula>−10 dB of 62.07% (2.2−4.18 GHz). The far-field measurements in the broadside direction demonstrated a dual-band CP response with 3 dB ARBWs of 4.92%(2.38−2.5 GHz) at the lower and 12.64% (3.26−3.70 GHz) at the upper band. The measured CP bands cover the entire frequency range of WLAN (2.401−2.495 GHz) and WiMAX (3.4−3.69 GHz) at the lower and upper bands, respectively. |
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| ISSN: | 1424-8220 |