An Ultra-Wideband Bidirectional Antenna with Modified Circular Disc Monopole Excited Elliptical Ring

Chawanonphithak, K.; Phongcharoenpanich, Chuwong; Kosulvit, S.; Krairiksh, M.

doi:10.1109/rws.2007.351818

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…For some long and narrow path service areas, such as the tunnel, highway, railway and the corridor, bidirectional antennas are preferred to be applied for the mobile devices in order to increase the zone size, expand the cell length and maximise the link efficiency [7,8]. The bidirectional antennas also have been utilised from commercial wireless communication to military areas such as radar application [9], ultra wideband system [10] and linear wireless sensor network [11]. The typical bidirectional antennas are accomplished by either combining two unidirectional antennas (such as Yagi) pointed in opposite directions or exciting two omni-directional antennas (such as monopole) by appropriate phase [12].…”

Section: Introductionmentioning

confidence: 99%

A bidirectional planar monopole antenna array for WiFi/Bluetooth and LTE mobile applications

Zhou

Arslan

2013

2013 Loughborough Antennas &Amp; Propagation Conference (LAPC)

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This paper presents a novel bidirectional planar monopole antenna array, with its feeding network, to apply for WiFi/Bluetooth and LTE mobile standards. The planar array is comprised of monopole antenna elements that utilise Archimedean spiral slots, inspired as resonance paths, in order to generate multi-band performance. Contrary to conventional structures, the feeding network is composed of three Wilkinson power dividers, for the purpose of providing synchronised output signals over the required frequency range, miniaturising dissipation losses and decreasing mutual coupling. Simulation and measurement results are presented for a single antenna element, an initial Wilkinson power divider and a four-element planar array, which reside on FR4 substrates. Successfully comparison between simulated and measured results verifies that the single antenna element achieves a 10 dB reflection coefficient from 2.2GHz to 2.9GHz, and the planar antenna array illustrates a 10 dB return loss bandwidth from 2.4GHz to 3.1GHz, which could cover WiFi/Bluetooth (2.45GHz) and LTE (2.6GHz) mobile applications. The proposed planar monopole antenna array also obtains large gain, high efficiency, narrow beam, low side lobe level and highly symmetric bidirectional radiation pattern in both E-and H-plane.

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Section: Introductionmentioning

confidence: 99%

A bidirectional planar monopole antenna array for WiFi/Bluetooth and LTE mobile applications

Zhou

Arslan

2013

2013 Loughborough Antennas &Amp; Propagation Conference (LAPC)

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“…In addition, the received signal acts more strongly in multipath fading environment and it can decrease the multipath effect surround the receiver [3, 7]. The UWB CP antenna are used widely in military aspect such as electronic countermeasure system, UWB radar, medical application [8–11].…”

Section: Introductionmentioning

confidence: 99%

“…It is noticeable that by cutting slot in the proposed design they could achieve band‐notch. For the antenna which is represented in [8], the feeder shape is the crucial parameter to achieve the good impedance characteristic for UWB frequency. The best result is obtained when the feeder shape is adapted with circular disc monopole (CDM) by using two rectangular holes, compared with two circular holes or without hole.…”

Section: Introductionmentioning

confidence: 99%

UWB monopole antenna with circular polarization

Rahim

Danesh

Chude-Okonkwo

et al. 2012

Micro & Optical Tech Letters

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In this article, ultra-wideband (UWB) monopole antenna with circular polarization (CP) is designed and implemented. The proposed antenna consists of an asymmetric shaped radiator fed by a microstrip line and a limited ground plane on the back side of the substrate. The overall size of proposed antenna is 28 mm × 29 mm, which is suitable for mobile devices. The antenna is fabricated on inexpensive FR4 a dielectric constant of, loss tangent tan = 0.019 with thickness of 1.6-mm. The measured results show that the proposed monopole antenna has a very wide bandwidth from 2.98 to 10.93 GHz that covers the UWB application range and defined by 10-dB return loss. Furthermore, a very wide CP bandwidth of 3-dB axial ratio bandwidth that ranges from 7.18 to 10.01 GHz is achieved. © 2012 Wiley Periodicals, Inc

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Planar array with bidirectional elements for tunnel environments

Ren

Wang

Ding

et al. 2017

Sci Rep

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The growing demands for wireless communications in tunnel environments are driven by requests for maintaining uninterrupted internet access for users in tunnels as well as wireless connections for wireless sensors, security, and control networks. Nevertheless, wireless networks in tunnel environments are associated with technical challenges related to elongated wireless coverage in two opposite near-end-fire directions. Here, we introduce a low-profile bidirectional antenna that can be mounted on a large ground plane and that has a dual-magnetic-current mode exhibiting radiation patterns with 3-dB beamwidth coverage at near-end-fire angles. Furthermore, we realized a planar array with eight such bidirectional antennas that were configured as a sparse array in order to reduce the commonplace issues of mutual coupling and grating lobes. The radiation beams of the proposed antenna array can scan in the end-fire area (60° < φ < 120°, 45° < θ < 80°), with scanning gains of 11~15 dB in the near-end-fire directions. In addition, we demonstrate that the proposed array can adaptively generate a directional single beam or multiple beams according to the positions of users, which is suitable for intelligent communication systems with low power consumptions and high communication bandwidths in tunnel environments.

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An Ultra-Wideband Bidirectional Antenna with Modified Circular Disc Monopole Excited Elliptical Ring

Cited by 6 publications

References 3 publications

A bidirectional planar monopole antenna array for WiFi/Bluetooth and LTE mobile applications

A bidirectional planar monopole antenna array for WiFi/Bluetooth and LTE mobile applications

UWB monopole antenna with circular polarization

Planar array with bidirectional elements for tunnel environments

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