A High Selectivity and High Efficiency Filtering Antenna With Controllable Radiation Nulls Based on Stacked Patches

Liang, Gen-Zhu; Chen, Fu‐Chang; Yuan, Hang; Xiang, Kai‐Ran; Chu, Qing‐Xin

doi:10.1109/tap.2021.3098563

Cited by 47 publications

(16 citation statements)

References 32 publications

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“…A detailed comparison of the developed filtering antenna with previously reported filtering antennas is given in Table 1. Compared with the filtering antennas in various studies, 5,6,8,10,12,13 the developed filtering antenna possesses some advantages in a number of substrates, impedance bandwidth, and electrical size while maintaining comparable in‐band radiating performance. Compared with the filtering antenna with a single‐layer structure by Yang et al, 14 the developed filtering antenna owns a much smaller transverse size and a comparable impedance bandwidth.…”

Section: Resultsmentioning

confidence: 99%

“…[1][2][3] In recent years, numerous investigations on filtering antennas have been carried out. [4][5][6][7][8][9][10][11][12][13][14] A codesign method that combines the patch antenna and hairpin filter through a metalized via hole is reported by Zuo et al 4 To further improve the out-of-band frequency selectivity, radiation nulls are introduced by etching rectangular slots into patch antenna, 5 and feeding a rectangular patch antenna through a slotted substrateintegrated waveguide cavity which operating at its highorder resonant mode. 6 Although the frequency selectivity is successfully improved by introducing radiation nulls, the fractional impedance bandwidths are less than 10%.…”

Section: Introductionmentioning

confidence: 99%

“…6 Although the frequency selectivity is successfully improved by introducing radiation nulls, the fractional impedance bandwidths are less than 10%. 5,6 To obtain a wider bandwidth, an air gap layer is added between the driven patch and stacked patch, 8 between the feeding probe and radiators, 9,10 or between the ground plane and radiating patch. 11 In various studies, 12,13 the method of multiple coupling paths and multilayer structure is utilized to realize a wideband filtering antenna with high selectivity.…”

Section: Introductionmentioning

confidence: 99%

“…The emerging filtering antenna technology, which efficiently incorporates the filtering and radiating functions into a single component to achieve circuit size reduction and lower loss, has attracted a lot of research interest 1–3 . In recent years, numerous investigations on filtering antennas have been carried out 4–14 . A codesign method that combines the patch antenna and hairpin filter through a metalized via hole is reported by Zuo et al 4 To further improve the out‐of‐band frequency selectivity, radiation nulls are introduced by etching rectangular slots into patch antenna, 5 and feeding a rectangular patch antenna through a slotted substrate‐integrated waveguide cavity which operating at its high‐order resonant mode 6 .…”

Section: Introductionmentioning

confidence: 99%

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A compact single‐layer wideband filtering antenna with capacitively loaded short‐circuited parasitic patches

Dong

Pan

Guo

et al. 2022

Micro & Optical Tech Letters

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A compact single‐layer wideband filtering antenna with a simple structure is presented in this letter. It consists of a rectangular driven patch, a pair of short‐circuited parasitic patches, and two pairs of rectangular slots. A short‐circuited parasitic patch is employed to capacitively load at each radiating edge of the driven patch to enhance the impedance bandwidth and facilitate filtering response. Based on this arrangement, a radiation null at the upper stopband is generated due to the effect of multipath coupling so as to improve the upper stopband frequency selectivity. Moreover, two pairs of slots are etched into the driven patch to produce an in‐band resonance and a radiation null at the lower‐band edge to further broaden the impedance bandwidth and enhance the lower stopband frequency selectivity. A prototype of the developed filtering antenna with a center frequency of 4.96 GHz is fabricated and tested for validation. The measured values are consistent with the simulated ones, indicating a wide impedance bandwidth of 16.5% (4.55–5.37 GHz), and a maximum realized gain of 6.3 dBi. Compared with the previously reported filtering antenna, the developed filtering antenna can achieve a wideband filtering response even with a low profile of 0.026λ0 and a small antenna size of 0.19λ02.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A compact single‐layer wideband filtering antenna with capacitively loaded short‐circuited parasitic patches

Dong

Pan

Guo

et al. 2022

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…Proper integration of these two can considerably increase the selective band of frequencies, gain stability, unwanted band rejection, and system efficiency [1]. Researchers achieved good frequency selectivity, efficiency, and a wide bandwidth by using integrated filter designs and antennas [2,3]. Wide-bandwidth filtering antennas have also become important in base station applications [4].…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Siw Slot Array Filtering Antenna for X and Ku Band Applications

Maruti¹,

Kishore²

2022

PIER Letters

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In this work, a substrate integrated waveguide slot array filtering antenna for dual band applications is presented. This novel design performs the functions of both a filter and an antenna simultaneously. The main intention of this work is to design a circuit that separates the frequencies in a dual band operation. The antenna is designed as an integration of two parts; the upper part operates at 10.2 GHz while the lower part operates at 16.4 GHz. In each part, an array of five longitudinal slots is incorporated, as well as a SIW antenna with complementary split ring resonators that operate as a band pass filter at the front end. Each slot array antenna is designed for a specific frequency band, and its function depends upon its preceding band pass filter. The two band pass filters allow only signals from the frequency bands for which they are designed to their corresponding slot array antennas. This technique, along with properly spaced metal vias of the SIW antenna, prevents any leakage and hence reduces interference in dual band operation. Both the band pass filter and the antenna can be built on the same planar board. The antenna is fed through a microstrip to SIW taper transition. CST Microwave Studio software is used for optimization and simulation of the structure. The antenna was built on an RT Duroid 5880 and tested to investigate practical validation. The antenna has a bandwidth of 1.9 GHz, from 9.2 GHz to 11.1 GHz in the X-band, and 2.2 GHz, from 15.6 GHz to 16.9 GHz in the Ku band. The gain pattern is unidirectional in nature and has low side lobe levels of −24 dB and −21 dB at resonant frequencies. A noticeable difference that is greater than 20 dB between co-polarization and cross-polarization is observed. The dimensions of the antenna are 56 mm × 32 mm × 0.508 mm. There is an excellent similarity between the simulated and measured results.

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Design of compact low‐profile planar filtering antenna with enhanced suppression level

Yan,

Tang,

et al. 2023

Micro & Optical Tech Letters

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A compact low‐profile planar filtering antenna with an enhanced suppression level is presented in this paper. The presented antenna has a simple structure, consisting of an E‐shaped driving patch, a shorted parasitic patch, and a defected ground structure (DGS). The E‐shaped driving patch serves as an effective radiator and facilitates the filtering response. The shorted parasitic patch is horizontally arranged and coupled with the driving patch through the radiating edge. And a radiation null and an extra in‐band resonance can be generated, which would simultaneously broaden the impedance bandwidth and improve the suppression level. In addition, a DGS on the metalized ground plane is etched to introduce another radiation null, and the out‐of‐band suppression level would be significantly enhanced. The filtering antenna with a center frequency of 3 GHz was constructed and tested to verify its performance. The measured values, which indicate a bandwidth of 10% (2.85–3.15 GHz) and a peak realized gain of 5.2 dBi, are in agreement with the simulated values. The presented filtering antenna features a low profile of 0.016λ0, a compact antenna size of 0.16λ20, as well as an improved suppression level of more than 22 dB.

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A High Selectivity and High Efficiency Filtering Antenna With Controllable Radiation Nulls Based on Stacked Patches

Cited by 47 publications

References 32 publications

A compact single‐layer wideband filtering antenna with capacitively loaded short‐circuited parasitic patches

A compact single‐layer wideband filtering antenna with capacitively loaded short‐circuited parasitic patches

Dual-Band Siw Slot Array Filtering Antenna for X and Ku Band Applications

Design of compact low‐profile planar filtering antenna with enhanced suppression level

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