Planar antennas

Chen, Zhi Ning; Ammann, Max J.; Qing, Xianming; Wu, Xuan Hui; See, Terence S. P.; Cat, A.

doi:10.1109/mw-m.2006.250315

Cited by 148 publications

(57 citation statements)

References 62 publications

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“…Commonly, planar antennas, such as bow-tie, diamond and square dipole antennas, and polygonal and elliptical monopole antennas, are well-suited for UWB systems as they are compact and can be printed on PCBs ( [113] and [114], and references therein). In addition, they can have wide impedance bandwidths and reasonable pulse distortion if their geometries and feeding structures are designed in an appropriate fashion [113].…”

Section: B Hardware Issuesmentioning

confidence: 99%

Position Estimation via Ultra-Wide-Band Signals

2009

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The high time resolution of ultra-wideband (UWB) signals facilitates very precise position estimation in many scenarios, which makes a variety applications possible. This paper reviews the problem of position estimation in UWB systems, beginning with an overview of the basic structure of UWB signals and their positioning applications. This overview is followed by a discussion of various position estimation techniques, with an emphasis on time-based approaches, which are particularly suitable for UWB positioning systems. Practical issues arising in UWB signal design and hardware implementation are also discussed.

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Section: B Hardware Issuesmentioning

confidence: 99%

Position Estimation via Ultra-Wide-Band Signals

2009

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“…In some configurations, the ground plane may be coplanar with the radiator. The radiators can also be fed by a microstrip line or coaxial cable [9].…”

Section: State-of-the-art Antennasmentioning

confidence: 99%

State-of-the-Art Antenna Technology for Cloud Radio Access Networks (C-RANs)

Sethi¹,

Alfakhri²,

Ashraf³

et al. 2017

Cloud Computing - Architecture and Applications

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The cloud radio access network (C-RAN) is one of the most efficient, low-cost, and energy-efficient radio access techniques proposed as a potential candidate for the implementation of next-generation (NGN) mobile base stations (BSs). A high-performance C-RAN requires an exceptional broadband radio frequency (RF) front end that cannot be guaranteed without remarkable antenna elements. In response, we present state-of-theart antenna elements that are potential candidates for the implementation of the C-RAN's RF front end. We present an overview of C-RAN technology and different types of planar antennas operating at the future proposed fifth-generation (5G) bands that may include the following: (i) ultra-wide band (UWB) (3-12 GHz), (ii) 28/38 GHz, and (iii) 60-GHz radio. Further, we propose different planar antennas suitable for the implementation of C-RAN systems. We design, simulate, and optimize the proposed antennas according to the desired specifications covering the required frequency bands. The key design parameters are calculated, analyzed, and discussed. In our research work, the proposed antennas are lightweight, low-cost, and easy to integrate with other microwave and millimeter-wave (MMW) circuits. We also consider different implementation strategies that can be helpful in the execution of large-scale multiple-input multiple-output (MIMO) networks.

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“…The antenna design is modified from circular geometry to have a flat base to support for beveling technique and tapered feed for wide impedance match. The optimization of this base is done to achieve improved impedance bandwidth by smooth impedance transition [9]. As this part of the radiator is very critical for governing the capacitive coupling with the ground plane, any reshaping of this part affects the current path strongly [10].…”

Section: Proposed Antenna Design Descriptionmentioning

confidence: 99%

Design of a Novel Antenna and Its Characterization in Frequency and Time Domains for Ultra Wide Band Applications.

Ershadh¹,

Krishna²,

Bhayaveni³

et al. 2014

PIER C

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Abstract-A novel compact planar monopole antenna for UWB applications is proposed in this paper. The proposed novelty of the antenna is attributed to the addition of suitable beveled stubs to a basic circular geometry of the radiator as an improved impedance matching technique to achieve enhanced radiation performances. The feed circuit is a tapered microstrip line with a matching section over a semi-elliptical ground plane. The proposed antenna achieves sufficient impedance bandwidth for a VSWR < 2 for frequencies from 3-15 GHz covering the entire UWB range (3.1-10.6 GHz), which is verified experimentally. Also this design achieves good gain, constant group delay and a near omnidirectional radiation pattern over the UWB band. The UWB characteristics of the antenna are evaluated in frequency and time domains. Results reveal that the proposed antenna has flat transfer function, linear phase and good impulse response with virtually no ringing which are the essential requirements for an UWB antenna for efficient pulse transmission/reception. The simulated and measured results of these parameters are presented. The performance results of the novel antenna with other designs is also compared and presented.

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Planar antennas

Cited by 148 publications

References 62 publications

Position Estimation via Ultra-Wide-Band Signals

Position Estimation via Ultra-Wide-Band Signals

State-of-the-Art Antenna Technology for Cloud Radio Access Networks (C-RANs)

Design of a Novel Antenna and Its Characterization in Frequency and Time Domains for Ultra Wide Band Applications.

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