A Single-Layer Low-Profile Circularly Polarized Filtering Patch Antenna

Yang, Wanjun; Pan, Yongmei; Zhang, Xiu Yin

doi:10.1109/lawp.2021.3058790

Cited by 47 publications

(11 citation statements)

References 21 publications

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“…Until now, various types of CP filtering antennas have been proposed by Jiang and colleagues. [10][11][12][13][14][15][16][17][18][19] By treating the patch antenna as the last-stage resonator of the filter networks, the co-designed CP filtering antennas are obtained by integrating the patch and filter networks together. 10,11 By introducing coupled phase shift resonators into the feeding network, two orthogonal electric fields with equal magnitude and 90°p hase difference are excited to obtain wideband axial-ratio (AR) bandwidth.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the above advantages, CP antennas with filtering performance are also an important application for various wireless systems. Until now, various types of CP filtering antennas have been proposed by Jiang and colleagues 10–19 . By treating the patch antenna as the last‐stage resonator of the filter networks, the co‐designed CP filtering antennas are obtained by integrating the patch and filter networks together 10,11 .…”

Section: Introductionmentioning

confidence: 99%

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Broadband circularly polarized filtering patch antenna based on metasurface

Ding,

Li,

2024

Micro & Optical Tech Letters

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In this paper, a single‐fed broadband circularly polarized (CP) filtering patch antenna based on metasurface is proposed. It consists of a corner‐truncated square patch, a nonuniform metasurface, and a U‐shaped strip. By placing the metasurface above the driven patch antenna, a radiation null is realized at the upper band, and an additional axial ratio (AR) minimum is simultaneously generated to enhance the CP bandwidth. Besides, two more radiation nulls are achieved at each side of the band edges by introducing a U‐shaped strip underneath the patch and embedding a shorting pin into the patch, which further improves the frequency selectivity and suppresses the radiation level. Measured results show that the designed antenna has a wide impedance bandwidth of 19.7% (4.8–5.85 GHz), a CP bandwidth of 19.9% (4.75–5.8 GHz), and an in‐band average gain of 7 dBic with suppression level of more than 18 dB at out of band.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Broadband circularly polarized filtering patch antenna based on metasurface

Ding,

Li,

2024

Micro & Optical Tech Letters

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“…However, it lacks flexibility in performance and is hard to get the optimal dimensions due to high integration and fixed configuration. Parasitic patches are also used in other designs [12][13][14][15][16] to provide more resonance modes. A lot of co-designed filtering antennas use stacked-layer structures and air gaps between layers to expand the bandwidth, 10,11,13,16,17 which makes the total height much larger than the conventional microstrip antennas.…”

Section: Introductionmentioning

confidence: 99%

High selective parallel‐scheme filtering antenna synthesized by transversal coupling matrix

Yang

2022

Int J RF Mic Comp-Aid Eng

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A novel synthesis method based on transversal coupling matrix for the parallel-scheme filtering antenna with high out-of-band selectivity is proposed.The filtering antenna consists of three resonant radiation elements that are connected to a common feed point. By adopting the parallel scheme, the design of a third-order filtering antenna can be decomposed into three firstorder sub filtering antennas. Each resonant antenna element can be separately designed and little adjustment is needed after combining these elements.Given a specification with up to two radiation nulls, the corresponding parameters of the three elements can be synthesized using the coupling matrix theory based on transversal topology. A practical filtering antenna centered at 5.74 GHz with the bandwidth of 410 MHz (7.2%) and two radiation nulls at 5.43 GHz and 6.13 GHz is fabricated. The measurements show the gain of 7.5 dBi and out-of-band suppression more than 30 dB at both passband sides can be achieved within the total size of 1.208λ 0 Â 1.725λ 0 Â 0.024λ 0 , where λ 0 is the free space wavelength of the center frequency.

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“…The combination of slot and chamfer is a more effective method to achieve CP radiation, L‐slots and chamfer were used by the stacked CP patch antenna, 7 while square slots and chamfer were combined in Ref 8 . Moreover, short pins were introduced to improve the ARBWs of CP patch antennas 9,10 …”

Section: Introductionmentioning

confidence: 99%

“…8 Moreover, short pins were introduced to improve the ARBWs of CP patch antennas. 9,10 To enhance both the impedance bandwidth (IB) and ARBW, resonant circuits 11,12 and air gap placed between the radiation patch and the reflector 13,14 were proposed. The IB and ARBW of the patch antenna both are 3.8%.…”

Section: Introductionmentioning

confidence: 99%

A circularly polarized patch antenna with a slotted parasitic loop

Tian

et al. 2022

Micro & Optical Tech Letters

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In the letter, a circularly polarized (CP) patch antenna is proposed, which consists of a slotted radiation patch, a slotted parasitic loop with a short pin, and a ground plane. The slot with one open and one circular end is etched in the radiation patch, and the current distribution of the radiation patch is disturbed to excite the first CP mode. The currents distributed on the slotted radiation patch and parasitic loop can superimpose or cancel each other to produce the second CP mode. Impedance matching and the performance of

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A Single-Layer Low-Profile Circularly Polarized Filtering Patch Antenna

Cited by 47 publications

References 21 publications

Broadband circularly polarized filtering patch antenna based on metasurface

Broadband circularly polarized filtering patch antenna based on metasurface

High selective parallel‐scheme filtering antenna synthesized by transversal coupling matrix

A circularly polarized patch antenna with a slotted parasitic loop

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