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A novel dual-band antenna is proposed for mitigating the multi-path interference in the global navigation satellite system(GNSS) applications. The radiation patches consist of a shortedannular-ring reduced-surface-wave(SAR-RSW) element and an inverted-shorted-annular-ring reduced-surface-wave(ISAR-RSW)element. One key feature of the design is the proximity-coupled probe feeds to increase impedance bandwidth. The other is the defected ground structure band rejection filters to suppress the interaction effect between the SAR-RSW and the ISAR-RSW elements. In addition, trans-directional couplers are used to obtain tight coupling. Measurement results indicate that the antenna has a larger than 10 d B return loss bandwidth and a less than 3 d B axial-ratio(AR) bandwidth in the range of(1.164 – 1.255) GHz and(1.552 – 1.610) GHz. The gain of the passive antenna in the whole operating band is more than 7 d Bi.
A novel dual-band antenna is proposed for mitigating the multi-path interference in the global navigation satellite system (GNSS) applications. The radiation patches consist of a shorted annulus-ring reduced-surface-wave (SAR- One key feature of the design is the proximity-coupled probe feeds to increase impedance bandwidth. The other is the defected ground structure band rejection filters to suppress the interaction effect Between the SAR-RSW and the ISAR-RSW elements. In addition, trans-directional couplers are used to obtain tight coupling. Measurement results indicating that the antenna has a larger than 10 d B return loss bandwidth and a less than 3 d B axial The gain of the passive antenna in the whole operating band is more than 7 d Bi. In the range of (1.164 - 1.255) GHz and (1.552 - 1.610) GHz,