Miniaturization of ultra wideband planar antenna using pairs of slots in the radiator and the ground plane

Abstract A compact ultra-wideband (UWB) square and circular slot ground plane planar antenna with a modified circular patch for UWB communication is presented. This antenna has a low reflection coefficient and high gain in the range of 8.94 GHz, starting from 2.85 to 11.79 GHz. The proposed antenna demonstrates UWB behavior with electrically small dimensions of 0.18 λ0×0.14 λ0×0.015 λ0 (λ0 is the free-space wavelength at 2.85 GHz). The fractional bandwidth of the antenna is 122.1%, with stable radiations. The antenna's maximum gain stands at 2.79 dBi, and the antenna's peak efficiency stands at 72%, respectively. It is lightweight, compact, and easy to manufacture. Hence, it can be used for the complete range of UWB applications and covers Wi-Max/WLAN/ X-Band and Ku-Band.

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Ultra-wideband slot-loaded planar antenna for future 5G millimeter wave applications

Tehnika ◽

10.5937/tehnika2105623k ◽

2021 ◽

Vol 76 (5) ◽

pp. 623-628

Author(s):

Surendra Gupta ◽

Amit Bage ◽

Milka Potrebić ◽

Lakhindar Murmu

Keyword(s):

Millimeter Wave ◽

Ground Plane ◽

Wave Spectrum ◽

Ultra Wideband ◽

Planar Antenna ◽

Cross Polarization ◽

Defected Ground Structure ◽

Antenna Performance ◽

The Given ◽

Polarization Level

An ultra-wideband, compact planar antenna with defected ground structure (DGS) has been presented in this article for future 5G millimeter-wave applications. The proposed antenna overcomes the limitation of bandwidth of the conventional microstrip patch antenna (typically < 5%). The antenna exhibits an ultra-wideband characteristic covering frequency band from 21.3 GHz to 40.6 GHz which makes the fractional bandwidth of 62.36%. The antenna performance is enhanced by etching slots on the patch and incorporating defect on the ground plane. The antenna achieves gain greater than 4.01 dBi and radiation efficiency greater than 95% throughout the operating band. In the given band it also exhibits very low cross-polarization level as well as stable radiation performance. This antenna is designed to operate in n257, n258, n260 and n261 5G millimeter-wave spectrum.

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Cuboidal quad-port UWB-MIMO antenna with WLAN rejection using spiral EBG structures

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078721000775 ◽

2021 ◽

pp. 1-8

Author(s):

Sumon Modak ◽

Taimoor Khan

Keyword(s):

Close Agreement ◽

Ground Plane ◽

Antenna System ◽

Ultra Wideband ◽

Electromagnetic Bandgap ◽

Mimo Antenna ◽

Simulated Performance ◽

Notched Band ◽

Multiple Input ◽

Band Characteristic

Abstract This study presents a novel configuration of a cuboidal quad-port ultra-wideband multiple-input and multiple-output antenna with WLAN rejection characteristics. The designed antenna consists of four F-shaped elements backed by a partial ground plane. A 50 Ω microstrip line is used to feed the proposed structure. The geometry of the suggested antenna exhibits an overall size of 23 × 23 × 19 mm3, and the antenna produces an operational bandwidth of 7.6 GHz (3.1–10.7 GHz). The notched band characteristic at 5.4 GHz is accomplished by loading a pair of spiral electromagnetic bandgap structures over the ground plane. Besides this, other diversity features such as envelope correlation coefficient, and diversity gain are also evaluated. Furthermore, the proposed antenna system provides an isolation of −15 dB without using any decoupling structure. Therefore, to validate the reported design, a prototype is fabricated and characterized. The overall simulated performance is observed in very close agreement with it's measured counterpart.

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Realizing UWB Antenna Array with Dual and Wide Rejection Bands Using Metamaterial and Electromagnetic Bandgaps Techniques

Micromachines ◽

10.3390/mi12030269 ◽

2021 ◽

Vol 12 (3) ◽

pp. 269

Author(s):

Ayman A. Althuwayb ◽

Mohammad Alibakhshikenari ◽

Bal S. Virdee ◽

Pancham Shukla ◽

Ernesto Limiti

Keyword(s):

Antenna Array ◽

Ground Plane ◽

Ultra Wideband ◽

Dual Band ◽

Area Network ◽

Electromagnetic Bandgap ◽

Uwb Antenna ◽

Average Gain ◽

Left Handed ◽

Notched Band

This research article describes a technique for realizing wideband dual notched functionality in an ultra-wideband (UWB) antenna array based on metamaterial and electromagnetic bandgap (EBG) techniques. For comparison purposes, a reference antenna array was initially designed comprising hexagonal patches that are interconnected to each other. The array was fabricated on standard FR-4 substrate with thickness of 0.8 mm. The reference antenna exhibited an average gain of 1.5 dBi across 5.25–10.1 GHz. To improve the array’s impedance bandwidth for application in UWB systems metamaterial (MTM) characteristics were applied it. This involved embedding hexagonal slots in patch and shorting the patch to the ground-plane with metallic via. This essentially transformed the antenna to a composite right/left-handed structure that behaved like series left-handed capacitance and shunt left-handed inductance. The proposed MTM antenna array now operated over a much wider frequency range (2–12 GHz) with average gain of 5 dBi. Notched band functionality was incorporated in the proposed array to eliminate unwanted interference signals from other wireless communications systems that coexist inside the UWB spectrum. This was achieved by introducing electromagnetic bandgap in the array by etching circular slots on the ground-plane that are aligned underneath each patch and interconnecting microstrip-line in the array. The proposed techniques had no effect on the dimensions of the antenna array (20 mm × 20 mm × 0.87 mm). The results presented confirm dual-band rejection at the wireless local area network (WLAN) band (5.15–5.825 GHz) and X-band satellite downlink communication band (7.10–7.76 GHz). Compared to other dual notched band designs previously published the footprint of the proposed technique is smaller and its rejection notches completely cover the bandwidth of interfering signals.

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Quad-Band multi-polarized antenna with modified electric-inductive−capacitive resonator

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078721000106 ◽

2021 ◽

pp. 1-12

Author(s):

Ghanshyam Singh ◽

Binod Kumar Kanaujia ◽

Vijay Kumar Pandey ◽

Sachin Kumar

Keyword(s):

Communication Systems ◽

Ground Plane ◽

Axial Ratio ◽

Antenna Design ◽

Planar Antenna ◽

Rectangular Slot ◽

Printed Circuits ◽

Rectangular Patch ◽

Easy Integration ◽

Defected Ground Plane

Abstract A compact circularly polarized (CP) patch antenna is presented for modern communication systems. The prospective antenna consists of a microstrip-line inset-fed rectangular patch and a defected ground plane. A rotated rectangular slot and a modified electric-inductive-capacitive (m-ELC) resonator are introduced in the patch and the ground plane to achieve multiband behaviour. A corner of the radiating patch is truncated and an arrow-shaped stub is introduced for generating circular polarization. The physical area of the substrate is 0.26λ0 × 0.22λ0, and the radiator size is 0.16λ0 × 0.14λ0, where λ0 is the free-space wavelength estimated at the lowest frequency. The measured (S11≤-10 dB) bandwidths of the antenna are 80 MHz (3.58%) at 2.23 GHz, 75 MHz (2.64%) at 2.84 GHz, 80 MHz (2.50%) at 3.19 GHz, and 70 MHz (1.82%) at 3.83 GHz. The measured 3-dB axial ratio bandwidths are 40 MHz (1.41%), 100 MHz (3.12%), and 60 MHz (1.57%) at 2.84, 3.20 and 3.82 GHz, respectively. The proposed planar antenna design does not need dual-feed or multi-layered patches for achieving multiple CP bands. It offers easy integration with the printed circuits of the communication systems.

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Design of a compact UWB antenna with a partial ground plane on epoxy woven glass material

Science and Engineering of Composite Materials ◽

10.1515/secm-2014-0297 ◽

2017 ◽

Vol 24 (1) ◽

pp. 73-79

Author(s):

Md. Moinul Islam ◽

Mohammad Tariqul Islam ◽

Mohammad Rashed Iqbal Faruque ◽

Rabah W. Aldhaheri ◽

Md. Samsuzzaman

Keyword(s):

Dielectric Material ◽

Ground Plane ◽

Ultra Wideband ◽

Design Parameters ◽

Uwb Antenna ◽

Glass Material ◽

Measurement Results ◽

Good Term ◽

Parametric Analyses ◽

Uwb Applications

AbstractA compact ultra-wideband (UWB) antenna is presented in this paper with a partial ground plane on epoxy woven glass material. The study is discussed to comprehend the effects of various design parameters with explicit parametric analyses. The overall antenna dimension is 0.22×0.26×0.016 λ. A prototype is made on epoxide woven glass fabric dielectric material of 1.6 mm thickness. The measured results point out that the reported antenna belongs to a wide bandwidth comprehending from 3 GHz to more than 11 GHz with VSWR<2. It has a peak gain of 5.52 dBi, where 3.98 dBi is the average gain. Nearly omnidirectional radiation patterns are observed within the operating frequency bands. A good term exists between simulation and measurement results, which lead the reported antenna to be an appropriate candidate for UWB applications.

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Ultra wideband dual square trident planar antenna

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI) ◽

10.1109/aps.2014.6905262 ◽

2014 ◽

Author(s):

Hemachandra reddy Gorla ◽

Kaylyn F. Shaw ◽

David W. Addison ◽

Frances J. Harackiewicz

Keyword(s):

Ultra Wideband ◽

Planar Antenna

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Design and analysis of a planar UWB bandpass filter with stopband characteristics using MMR technique

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078720001762 ◽

2021 ◽

pp. 1-8

Author(s):

Gaurav Saxena ◽

Priyanka Jain ◽

Y. K. Awasthi

Keyword(s):

Return Loss ◽

Group Delay ◽

Bandpass Filter ◽

Ground Plane ◽

Cost Effective ◽

Ultra Wideband ◽

Defected Ground Structures ◽

Ground Structures ◽

Multi Mode ◽

Mode Resonator

Abstract In this paper, a ultra-wideband (UWB) bandpass filter with stopband characteristics is presented using a multi-mode resonator (MMR) technique. An MMR is formed by loading three dumbbell-shaped (Mickey and circular) shunt stubs placed in the center and two symmetrical locations from ports, respectively. Three circular and arrowhead defected ground structures on the ground plane are introduced to achieve UWB bandwidth with a better roll-off rate. The proposed filter exhibits stopband characteristics from 10.8 to 20 GHz with a 0.4 dB return loss. The group delay and roll-off rate of the designed filter are <0.30 ns in the passband and 16 dB/GHz at lower and higher cut-off frequencies, respectively. The dimension of the filter is 0.74λg × 0.67λg mm2 and was fabricated on a cost-effective substrate. All simulated results are verified through the experimental results.

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