Circular SRR Shaped UWB Antenna with WiMAX Band Notch Characteristics

Kumar, Ankam Laxman; Ranjan, Alok; Chauhan, Monika; Killamsetty, Vinay Kumar; Mukherjee, Biswajeet

doi:10.23919/radio.2018.8572343

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…However, some antennas did not cover the X-band [11][12][13], although there have been studies on antennas covering the WLAN, C-band, and X-band, which required miniaturization for ease of installation [14][15][16]. There was a study on an antenna that covered WLAN, C-band, and X-band with a small size, but since it was a rigid antenna, the characteristics of bending could not be guaranteed [17]. Therefore, to cover WLAN, C-band, and X-band, a flexible antenna with a smaller size than the existing antenna is required.…”

Section: Introductionmentioning

confidence: 99%

Wideband Ring-Monopole Flexible Antenna with Stub for WLAN/C-Band/X-Band Applications

Lee

Park

2022

Applied Sciences

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In this paper, we designed a flexible antenna operating in the WLAN/C-band/X-band and analyzed the antenna bending characteristics. It is advantageous to have a wide bandwidth because the resonant frequency of the flexible antenna can be changed when it is bent. The proposed antenna was designed based on a ring monopole antenna with broadband characteristics. Slots and t-strip lines to the ring, stubs to the feed, and stepped structures to the ground plane were added to increase bandwidth. As a result of analyzing the characteristics of the proposed antenna when bent through the S-parameter, it was confirmed that the proposed antenna is suitable at the target frequency, even if it is bent. The size of the antenna is 0.256 λ × 0.32 λ × 0.0016 λ () at 2.4 GHz, and the antenna bandwidth is 15.68% (2.36 GHz~2.87 GHz) at 2.615 GHz and 111.69% (3.4 GHz~12 GHz) at 7.7 GHz.

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Section: Introductionmentioning

confidence: 99%

Wideband Ring-Monopole Flexible Antenna with Stub for WLAN/C-Band/X-Band Applications

Lee

Park

2022

Applied Sciences

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“…Recently, the authors proposed different sensors based on Split-Ring Resonators (SRRs) for the characterization of the dielectric permittivity of solid and liquid materials [7,8]. SRRs have been used in different applications such as sensors [7,8] and antennas [9][10][11]. These resonators are very useful for the proposed application due to their small dimensions and high quality factor, which make them very compact and sensitive.…”

Section: Introductionmentioning

confidence: 99%

A Contactless System for the Dielectric Characterization of Liquid Drops

Romera¹,

Cano²,

Martínez³

et al. 2020

PIER M

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The present article shows the design, implementation, and measurement of a compact contactless electronic system for sensing small volumes of liquids. The system is based on two elements: an electronic reader and a passive sensor. The proposed sensor consists of a printed monopole antenna loaded with two Split-Ring Resonators. This results in a fully-passive and single-layer low-cost design. To allow the sensing of small volumes of liquids, a 1-mm-thick adhesive Kapton layer was attached on the top layer of the sensor, and two drop tanks were added to the structure. On the other hand, the reader was designed following a layered approach, which allows us to develop compact and low-cost electronic sensor readers for the Internet of Things. The resulting reader contains a Radio-Frequency interface for the generation of detection of signals, a minicomputer, and the radiating interface. This interface includes a patch antenna that allows us to interrogate the contactless sensor within a 1-cm range. The whole system was manufactured and tested. The total dimensions of the reader are 15 cm × 15 cm, and its weight is below 1 kg. These imply a dramatic form factor and weight reductions with respect to previous readers. Moreover, the manufactured system was used to measure the dielectric permittivity of different liquid drops. Results show that only 4 ml of liquid were needed to determine the dielectric permittivity with a 0.27% error. This volume means a 98.4% reduction compared to submersible sensors which can be found in the literature.

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Design of a novel ultra‐wideband dual‐polarized printed planar antenna

Hao

Chen

et al. 2022

Int J RF Mic Comp-Aid Eng

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A novel antenna, which has a simple one‐layer printed planar structure with dual‐polarization and ultra‐wideband (UWB) properties, is proposed in this article. The proposed antenna consists of a pair of crossed dipoles, two stacked square loops, four meander slots, and a hornlike reflecting cavity. The stacked loops positioned around the crossed dipoles are utilized to introduce a new resonant mode in the lower frequency band, which essentially widens the impedance bandwidth and realizes the miniaturization design. To further enhance the impedance bandwidth, the four meander slots are cut from the crossed dipoles to generate a new resonant mode in the higher frequency band. Therefore, the impedance bandwidth is greatly expanded. A hornlike reflecting cavity is used to enhance the unidirectional radiation pattern over the operating frequency band. A prototype is designed, fabricated, and measured. Measured results show that the proposed antenna achieves a voltage standing wave ratio (VSWR) < 2, impedance bandwidth up to 92% (from 1.05 to 2.85 GHz). The isolation between two linear orthogonal polarizations >25 dB, and stable unidirectional radiation patterns over the entire working frequency band with gain >8 dBi. Furthermore, the proposed antenna has a compact planar size of 0.25λL×0.25λL(λL is the longest operating wavelength).

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Circular SRR Shaped UWB Antenna with WiMAX Band Notch Characteristics

Cited by 9 publications

References 7 publications

Wideband Ring-Monopole Flexible Antenna with Stub for WLAN/C-Band/X-Band Applications

Wideband Ring-Monopole Flexible Antenna with Stub for WLAN/C-Band/X-Band Applications

A Contactless System for the Dielectric Characterization of Liquid Drops

Design of a novel ultra‐wideband dual‐polarized printed planar antenna

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