Compact Broadband Dual-Polarized Filtering Dipole Antenna With High Selectivity for Base-Station Applications

Ding, Chao Feng; Zhang, Xiu Yin; Zhang, Yao; Pan, Yong; Xue, Quan

doi:10.1109/tap.2018.2862465

Cited by 124 publications

(57 citation statements)

References 24 publications

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“…Table compares the performances of the proposed antenna and the reported dual‐polarized filtering antennas using patch radiator or other radiators such as Jerusalem‐cross radiator, dipole, or dual‐slot radiator . It can be found that the proposed antenna exhibits the advantages of simpler structure, higher isolation, higher front‐to‐back ratio, and better out‐of‐band rejection level.…”

Section: Antenna Designmentioning

confidence: 93%

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: Antenna Designmentioning

confidence: 93%

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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“…However, the narrow passband bandwidth cannot meet the requirements of base station antennas. Parasitic loops are used to achieve bandpass filtering and improve frequency selectivity . The upper stopband of the antenna can cover C‐band (3300‐3800 MHz), but it cannot be extended to LB antenna due to its narrow harmonic suppressing bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Dual‐polarized filtering antenna with harmonic suppression for base station applications

Chang

Chu

2020

Micro & Optical Tech Letters

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A dual‐polarized filtering antenna (DPFA) with high‐order harmonics suppression for 690‐960 MHz based station applications is proposed in this letter. The proposed DPFA is obtained by integrating a miniaturized lowpass filter with a ±45° dual‐polarized antenna (DPA) which made by two crossed dipoles. With the miniaturized lowpass filter, harmonic suppression is easily achieved by the proposed DPFA without increase its size. The experimental results which agree with the computer simulations show that wide impedance bandwidth (|S11| < −15 dB) of 43.2% (690‐1070 MHz) and harmonic suppression frequency up to 4.5 GHz are realized. In the operating frequency band (690‐960 MHz), port‐to‐port isolation of more than 35 dB, cross‐polarization discrimination of more than 27 dB, 3‐dB beamwidth of 68.8° ± 2.1°, efficiency of more than 82%, and stable gain of 8.2 ± 0.5 dBi are obtained by the proposed DPFA. In addition, radiation suppression of more than 18 dB in the interference bands (1690‐2690 MHz and 3300‐3800 MHz) is obtained.

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“…With the development of the fifth‐generation (5G) mobile and wireless communication technologies, antennas play an important role in modern wireless communication systems. As an important component of radio frequency (RF) front end, filtering antennas have attracted more and more attention in recent years …”

Section: Introductionmentioning

confidence: 99%

“…[], three shorting pins and a U‐slot are used in the design to generate radiation nulls and improve the roll‐off rate at the band‐edge. Satisfactory filtering performance is achieved by inserting slots and using parasitic loop …”

Section: Introductionmentioning

confidence: 99%

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A novel differential filtering patch antenna with high selectivity

Wang

Ran

Hu³

et al. 2019

Int J RF Microw Comput Aided Eng

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A novel differential filtering antenna with high selectivity is proposed. The antenna is mainly composed of three different‐size patches, a slot, a pair of differential feeding lines, and a line resonator. An air gap is adopted to improve the impedance bandwidth and the filtering performance. The line resonator helps to generate high common‐mode (CM) rejection. Owing to the parasitic concave and convex patches, the filtering performance and the bandwidth of the antenna are enhanced. The parasitic concave patch affects the lower band‐edge selectivity while the parasitic convex patch influences the upper band‐edge selectivity. In addition, the frequencies of two radiation nulls can be controlled independently to achieve two high sharp roll‐off rates by adjusting the lengths of the parasitic patches. Considerable impedance matching bandwidth is achieved through an aperture coupling. Finally, a prototype of the differential filtering antenna is fabricated and tested. The measured results are in good agreement with the simulated results, showing an impedance bandwidth of 9.9% and an average realized gain of 7.5 dBi. Besides, two filter zero transmissions located at 3.40 and 3.84 GHz produced two radiation nulls.

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Compact Broadband Dual-Polarized Filtering Dipole Antenna With High Selectivity for Base-Station Applications

Cited by 124 publications

References 24 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

Dual‐polarized filtering antenna with harmonic suppression for base station applications

A novel differential filtering patch antenna with high selectivity

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