Design of a Novel Wideband Loop Antenna With Parasitic Resonators

Fan, Shou‐Tao; Zheng, Shufeng; Cai, Yuan‐Ming; Yin, Yingzeng; Hu, Ya-Jun; Yang, Jing

doi:10.2528/pierl12112903

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Some stacked parasitic element techniques have been proposed for the bandwidth and gain enhancement simultaneously . Another coplanar U‐shaped parasitic element for bandwidth enhancement and radiation pattern improvement of loop antenna was proposed .…”

Section: Introductionmentioning

confidence: 99%

Spiral type parasitic elements patch antenna

Kashyap

Kumar

2014

Micro & Optical Tech Letters

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In this article, spiral type parasitic elements of the patch antenna are investigated. Composite name of this antenna is “patch feed curls antenna” (PFCA). Four spirals or curls are symmetrically introduced around the corners of a rectangular patch in plane; they receive their excitation from the latter via a capacitive gap of 1 mm. Due to the effect of the spiral type parasitic elements the gain and bandwidth enhancement found in the patch characteristics. The composite antenna is working in the frequency range 4.24–4.92 GHz. Simulation results obtained from CST‐microwave studio are in good agreement with measurements of the fabricated structures. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2773–2778, 2014

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Section: Introductionmentioning

confidence: 99%

Spiral type parasitic elements patch antenna

Kashyap

Kumar

2014

Micro & Optical Tech Letters

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“…However, the patch antenna is narrow in bandwidth. To improve the bandwidth of the patch antenna, two rectangular patches and U-shaped elements were added as the parasitic resonators in [14]. With the use of a pair of parasitic L-wires placed above the triangular patches, a wide impedance bandwidth and directional radiation patterns have been achieved [15].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Magneto-Electric Dipole Antenna Using CPW Structure

Xie¹,

Deng²,

Yin³

2013

PIER C

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A new wideband magneto-electric dipole antenna using coplanar waveguide (CPW) structure is proposed in this paper. The proposed antenna consists of a pair of horizontal triangular patches and two vertically oriented L-shaped strips. By introducing triangular patches working as an electric dipole, the antenna can operate in a wide band. With the use of L-shaped strips equivalent to a magnetic dipole, the antenna is low in profile. A microstrip feed line is located between the two L-shaped strips to form a coplanar waveguide structure and excite the antenna. By carefully adjusting the gap between the feed line and the strips, the impedance bandwidth can be improved largely. A parametric study is performed to provide information for designing and optimizing such an antenna. A prototype is fabricated and measured. The simulated and measured results show that the impedance bandwidth for SWR less than 2 of the proposed antenna is 58. . Due to the complementary nature of the antenna, the proposed antenna has a unidirectional radiation pattern with low-polarization and low back-lobe radiation over the whole operating band. Furthermore, the gain of the antenna is stable across the entire bandwidth.

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Design Formulas for Broadband Concentric Circular-Loops Antennas

Hamed¹,

Osman²

2015

AEM

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This paper presents a simple formulas for designing broadband concentric circular-loops antennas (CCLAs). The loop dimensions for widest bandwidth are derived and expressed in terms of driven loop resonance frequency. The analysis addresses CCLAs with and without ground planes senarios.The derived formulas are used to design multiple CCLAs. For example, a 3-elements CCLA of a maximum radius of 6.34 cm can be designed to operate with a voltage standing wave ratio (VSWR) < 2 over the frequency band with fractional bandwidth of 16.9% with a minimum directivity of 3.9 dB. Addionationally, a 4-elements CCLA of maximum radius of 15 cm can be design to operate in the frequency band extending from 825 MHz to 991 MHz (fractional bandwidth of 18.3%) with a VSWR < 2 and directivity higher than 5.2 dB over the entire band. Furthermore, the analysis shows that a 3-elements CCLA backed with a conducting ground plane improves the fractional bandwidth to 19.6% and directivity to 9.15 dB over the band of interest. The analytical results on designed antennas are validated with simulation results obtained by using the AN-SOF antenna simulation software. An excellent agreement is observed between analytical and AN-SOF simulations results.

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Design of a Novel Wideband Loop Antenna With Parasitic Resonators

Cited by 3 publications

References 15 publications

Spiral type parasitic elements patch antenna

Spiral type parasitic elements patch antenna

A Wideband Magneto-Electric Dipole Antenna Using CPW Structure

Design Formulas for Broadband Concentric Circular-Loops Antennas

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