Filtering Antenna With High Selectivity Using Multiple Coupling Paths From Source/Load to Resonators

Zhang, Bohai; Xue, Quan

doi:10.1109/tap.2018.2839968

Cited by 96 publications

(33 citation statements)

References 21 publications

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“…Integrating the filter with the patch antenna by a matching structure is another method, which can achieve multi‐order filtering design but with bulky size and low efficiency. The method making the patch radiator as the last resonator of the filter gives consideration to both efficiency and possibility of multi‐order filtering response, both gain and design complexity. However, most of the reported filtering patch antennas are single‐polarized designs.…”

Section: Introductionmentioning

confidence: 99%

A substrate integrated cavity‐fed dual‐polarized filtering patch antenna with high isolation

Meng

Wang

Shi

2019

Int J RF Microw Comput Aided Eng

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This article presents a dual‐polarized filtering patch antenna, which uses two orthogonal modes (TE210/TE120) of the substrate integrated cavity (SIC) to couple with two orthogonal modes (TM10/TM01) of the patch by the cross slot, respectively. The second‐order filtering response on dual polarizations can be achieved by using just one SIC resonator and one slotted square patch, which display simple structure of the proposed antenna. The slotted square patch provides a new way to obtain same external quality factor of the radiator on dual polarization, which makes the performances on two polarizations agree well with each other when changing the bandwidth. High isolation can be achieved by controlling the space of the vias of the SIC. Radiation nulls can be produced by connecting the coupled lines with the feeding lines in parallel. A prototype with the entire height of 0.019 λ0 (λ0 is the free‐space wavelength at center frequency) achieves a 10‐dB bandwidth of 1.6%, the gain of 4.9 dBi at the center frequency, the port isolation of 43 dB, and the out‐of‐band rejection level of 25 dB.

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Section: Introductionmentioning

confidence: 99%

A substrate integrated cavity‐fed dual‐polarized filtering patch antenna with high isolation

Meng

Wang

Shi

2019

Int J RF Microw Comput Aided Eng

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“…Recently, there has been great interest among researchers in designing antennas with filtering function [1][2][3][4][5][6][7][8][9][10][11][12]. Antennas combined with cavity filters using a substrate integrated waveguide (SIW) technique were proposed in [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Antennas combined with cavity filters using a substrate integrated waveguide (SIW) technique were proposed in [1][2][3]. In [4][5][6][7][8][9][10], the authors used the method of filter synthesis to design filtering antennas since the antenna unit served as a radiator as well as one of the resonators. The antenna units were designed in various forms, such as U-shape [4,5], Γ-shape [6], and fan-shape [7].…”

Section: Introductionmentioning

confidence: 99%

Design of X-Band Integrated Filtering Pyramidal Horn Antenna

Wang¹,

Chen²,

Chu³

2019

PIER Letters

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An X-band pyramidal horn antenna with a fourth order Chebyshev filtering function is presented in this paper. Four resonators are implemented in linear rectangular waveguide in the filter design. The last stage resonator provides not only resonance pole but also radiation function. To achieve high directivity, a pyramidal horn is attached to the filter output port, with negligible effect on the filter performance. Theoretical results are calculated based on the coupling matrix between the resonators. Finally, a pyramidal horn antenna operating at 10 GHz is designed and fabricated for demonstration. The measured results have found to be in good agreement with the simulated ones.

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“…Different from the cascaded-resonator structure, the filtering function of this design is realized by introducing multiple attenuation poles in the gain response, which will be called as gain zeros in this letter for easy reference. The required gain zeros can be introduced by either feeding structures [5][6][7], loading elements [8][9][10][11], or specially designed coupling topology [12][13][14]. In [14], the authors present a gap coupled multi-patch structure.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Mode Resonator-Fed Gap Coupled Filtering Antenna With Improved Selectivity and Bandwidth

Wang¹,

Chen²,

Qian³

et al. 2019

PIER Letters

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A novel dual-mode resonator-fed filtering patch antenna with improved selectivity and bandwidth is proposed in this paper. Unlike well-known cascaded-resonator structure, the proposed filtering antenna shows five poles in the reflection coefficient response utilizing only one resonator. The gap-coupled radiating part introduces two gain zeros along each side of the gain response. Meanwhile, the dual-mode resonator feeding structure of the antenna will also produce another two gain zeros. All these four gain zeros highly improve the selectivity of the filtering antenna without increasing the number of coupling resonators. In addition, the bandwidth of the antenna is also considerably extended using this feeding structure. For validation, a prototype is designed, fabricated, and measured. The measured results agree well with the simulated ones.

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Filtering Antenna With High Selectivity Using Multiple Coupling Paths From Source/Load to Resonators

Cited by 96 publications

References 21 publications

A substrate integrated cavity‐fed dual‐polarized filtering patch antenna with high isolation

A substrate integrated cavity‐fed dual‐polarized filtering patch antenna with high isolation

Design of X-Band Integrated Filtering Pyramidal Horn Antenna

A Dual-Mode Resonator-Fed Gap Coupled Filtering Antenna With Improved Selectivity and Bandwidth

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