Miniaturized circularly polarized patch antenna using coupled shorting strip and capacitive probe feed

Shi, Hongyu; Li, Jianxing; Shi, Junwei; Chen, Juan; Li, Zhiyuan; Zhu, Shitao; Khan, Tayyab; Zhang, Anxue

doi:10.1016/j.aeue.2018.11.022

Cited by 11 publications

(5 citation statements)

References 30 publications

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“…In order to accomplish dual-band operation using three frequency-selective surfaces, a substrate has been integrated into a waveguide to achieve high gain (5:6 dBic) and the CP antenna, as demonstrated in [8]. The antenna in [9] is guided to be CP by loading four circular patches with different radii and L-shaped connected shorting strips onto the corners of the patch. This antenna is fed by a capacitive probe feeding to compensate the considerable probe inductance.…”

Section: Introductionmentioning

confidence: 99%

A High-Power Sandwiched Omnidirectional Circularly Polarized Antenna for GNSS Systems

2023

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This paper presents a small-size, low-profile antenna for anti-attacking systems that work against unmanned GNSS-guided attacking vehicles to protect a vital area. The proposed antenna has the ability to handle, theoretically, a peak power up to 157.7 kW. It has a cylindrical shape with a diameter of 75.4 mm and a height of 12.8 mm on a low-cost FR-4 substrate. This small size allows the integration of the proposed antenna with any portable system that prevents the attacks of GNSS-guided vehicles. The proposed antenna covers the whole GNSS frequency band with a fractional impedance bandwidth of 32.5% (1.16-1.61) GHz and a fractional axial ratio bandwidth of 37.6% (1.1-1.61) GHz utilizing a sandwiched structure. This broadband performance is realized using capacitive feeding. The proposed design maintains circularly polarized radiation over a wide elevation angle of 132º and a 360º azimuth angle which makes the proposed design suitable for GNSS anti-attacking systems.

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Section: Introductionmentioning

confidence: 99%

A High-Power Sandwiched Omnidirectional Circularly Polarized Antenna for GNSS Systems

2023

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“…As an important part of satellite navigation systems, the performance of antennas directly affects the communication quality of a whole navigation system [1][2][3][4]. In order to improve signal-to-noise ratio, the antenna of a satellite navigation system needs circularly polarized waves and a wider beam width with a higher low-elevation gain [5].…”

Section: Introductionmentioning

confidence: 99%

A Dual-Band Circularly Polarized Antenna With ``X'' Parasitic Structures

Wang¹,

Sun²

2022

PIER Letters

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This paper proposes a dual-band circularly polarized antenna with "X" parasitic structures applied in the Beidou satellite navigation system. The innovation of this paper is to introduce the radome with "X" parasitic structures to broaden the beam width of the L-band and to improve the low-elevation gain of the antenna. Furthermore, high dielectric constant materials are used to realize the miniaturization and embedded application of the antenna. The measured results show that the VSWR of the L-band is 1.09 at 1616 MHz, and the VSWR bandwidth (VSWR < 2) is 45 MHz (1589 MHz-1634 MHz). The VSWR of S-band antenna is 1.24 at 2492 MHz, and the VSWR bandwidth (VSWR < 2) is 54 MHz (2471 MHz-2525 MHz). By adding the designed radome, the 20 degree elevation gain of the Lband is increased by 3.755 dBic The measured results show that the gain variation at 20-degree elevations of the antenna at 1616 MHz and 2492 MHz are 4.981 dBic and 3.7 dBic, respectively. Moreover, the beam widths of the antenna at 1616 MHz and 2492 MHz are 130 degrees and 104 degrees, respectively. The antenna has an improved gain and a good roundness at low elevation angles, thus providing a favorable choice for navigation antenna solutions.

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“…One of the representative frequencies for the BDS is the B3 band of 1268.52 ± 10.23 MHz, and this bandwidth is relatively narrow. For the terminal application of this system, such as handheld devices, good CP performance and hemispherical widebeam pattern are necessary, and it should also have the performance of miniaturization, light weight, and easy processing [3].…”

Section: Introductionmentioning

confidence: 99%

A Novel Miniaturized Circularly Polarized Antenna With Shorting Pins and Parasitic Strips for Beidou Satellite Navigation System Applications

Yang¹,

Zhang²,

Zheng³

2021

PIER Letters

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In this paper, a novel miniaturized circularly polarized (CP) antenna for BeiDou Satellite Navigation System (BDS) applications is presented. The proposed antenna is composed of three substrates with the same size, which are combined by four shorting pins. Parasitic strips are used to reduce the size, and the radiation patch is fed by two coupling feeding patches with the same amplitude and 90 • phase difference. The overall dimension of the proposed antenna is only 18 mm × 18 mm × 23.5 mm (about 0.08λ 0 × 0.08λ 0 × 0.1λ 0), and its weight is about 25 grams. The performance study with different geometric parameters has been conducted. A prototype based on optimized dimensions has been fabricated and measured, and the tested results exhibit a good impedance matching bandwidth ranging from 1.2 to 1.35 GHz centered at 1.268 GHz. This antenna also has stable hemispherical radiation patterns and good CP characteristics. Good agreement between analytical and experimental results is obtained.

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Miniaturized circularly polarized patch antenna using coupled shorting strip and capacitive probe feed

Cited by 11 publications

References 30 publications

A High-Power Sandwiched Omnidirectional Circularly Polarized Antenna for GNSS Systems

A High-Power Sandwiched Omnidirectional Circularly Polarized Antenna for GNSS Systems

A Dual-Band Circularly Polarized Antenna With ``X'' Parasitic Structures

A Novel Miniaturized Circularly Polarized Antenna With Shorting Pins and Parasitic Strips for Beidou Satellite Navigation System Applications

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