Characterisation of ultra-wideband antenna arrays with spacings following a geometric progression

Gentner, Philipp K.; Hilton, Geoff; Beach, M.A.; Mecklenbräuker, Christoph F.

doi:10.1049/iet-com.2010.1054

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…The value c 0 also sets a restriction to the largest protruding distance from a planar baseline surface. Now, utilising (10) and 11, we obtain the following triangular system of equations…”

Section: Six-step Design Algorithm For Curved Arraymentioning

confidence: 99%

“…However, a more important application of arrays with non-uniform geometry is the design of broadband antennas, which are increasingly essential for UWB and other wireless applications [9][10][11]. In this paper, we present a generalised mathematical algorithm for design of broadband antenna arrays whose elements occupy fixed positions in the transverse plane (x-y-plane), while having the freedom to be placed arbitrarily along the longitudinal axis (z-axis).…”

Section: Introductionmentioning

confidence: 99%

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Generalised design method of broadband array antennas using curved geometry

Gonzalez

Kumar²,

Branner

2016

IET Microwaves, Antennas & Propagation

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Curved array antennas offer increased degrees of freedom when antenna elements are configured in non‐uniform geometries. This permits increased flexibility over control of pattern structure and increase in the bandwidth of operation. In this study, the authors present a generalised design method for broadband antenna arrays using such curved structures. Following this design process, two types of array structures evolved: pseudo‐curved array (PCA), with the array apertures parallel to one another and the fully curved array (FCA), with the outer element apertures oriented radially outwards. These antenna arrays were designed, analysed and measured on five and seven element structures at a centre frequency of 18 GHz. Both PCA and FCA performance showed a broader frequency response as compared with the uniform array; additionally, it was determined that the variation in array geometry permits them to control the number of beams and nulls in the far‐field pattern, as well as the beamwidth of the array. Overall, it was observed that curved arrays showed a narrowing of multibeam positions and conversely a broader frequency response as compared with uniform arrays.

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“…The value c 0 also sets a restriction to the largest protruding distance from a planar baseline surface. Now, utilising (10) and 11, we obtain the following triangular system of equations…”

Section: Six-step Design Algorithm For Curved Arraymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Generalised design method of broadband array antennas using curved geometry

Gonzalez

Kumar²,

Branner

2016

IET Microwaves, Antennas & Propagation

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“…Readers for localisation will very likely use an array antenna to track the small device. In [9] and [10], UWB antenna arrays are introduced and analysed concerning their ability to operate in a wideband spectrum and are consecutively used to operate with the wideband tags.…”

Section: Asymmetric Communication Schemementioning

confidence: 99%

A UHF/UWB hybrid silicon RFID tag with on–chip antennas

Gentner¹,

Langwieser²,

Scholtz³

et al. 2013

J Embedded Systems

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In this contribution, we describe and analyse a miniature wireless radio frequency identification (RFID) chip with on-chip antennas (OCA) and ultra wideband (UWB) signalling by real-world measurements. With the on-chip antenna approach, no external antennas are required, and the size of the overall tag is identical to the size of the chip alone (3.5 mm × 1 mm). The chip is powered through inductive coupling and controlled by an RFID signal at 866 MHz in the downlink, while the uplink transmits a quaternary pulse-position-modulated (4-PPM) UWB signal at 5.64 GHz with pulses having a duration in the order of nanoseconds. In this contribution, the hybrid or asymmetric communication scheme between prototype chip and reader, the embedded OCA, and the measurement setup are described. The prototype achieves 4-PPM bit rate of 126 Mbit/s based on a pulse-train transmission with a duration of 10 μs. The small size, high data rate, and fine time resolution of the UWB impulse radio offer new features and sensing capabilities for future RFID-like applications.

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“…Compared with the wavelength-scaled array concept, compact size can be achieved by selecting a UWB antenna element to compose the UWB antenna array. Among various UWB antennas [3][4][5][6][7][8][9][10][11][12], planar UWB monopole [6][7][8] and tapered slot antenna [9][10][11][12] are widely used in UWB antenna array designs, as they have characteristics of broad bandwidth, simple structure and easy fabrication.…”

Section: Introductionmentioning

confidence: 99%

“…UWB monopole array [6,7] has a wide frequency band but bidirectional radiation patterns and low antenna gain. In addition, the side lobe levels are high at higher frequencies due to the higher-mode.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Connected Antenna Array for Ultra-Wideband Applications

Wang¹,

Zhu²,

Gao³

2015

PIER C

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Abstract-An integrated eight-element antenna array has been proposed for ultra-wideband (UWB) applications. It consists of eight UWB antenna elements and an eight-way binary-tree modified Wilkinson power divider. Any two adjacent elements in the array are connected to each other and share a common side, thus leading to a connected antenna array. Moreover, this arrangement can be utilized to avoid grating lobe level at higher frequencies. Each antenna element comprises a square ring patch and is excited by a tapered balun to achieve low cross-polarization levels. In order to validate the design, a prototype has been fabricated and measured. Both simulated and measured results confirm that the proposed integrated antenna array achieves a good performance of a reflection coefficient below −10 dB from 2.9 GHz to 10.8 GHz, including stable radiation patterns with low side lobe and cross-polarization levels, thus the antenna is promising for applications in UWB imaging systems.

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Characterisation of ultra-wideband antenna arrays with spacings following a geometric progression

Cited by 7 publications

References 11 publications

Generalised design method of broadband array antennas using curved geometry

Generalised design method of broadband array antennas using curved geometry

A UHF/UWB hybrid silicon RFID tag with on–chip antennas

Design and Implementation of Connected Antenna Array for Ultra-Wideband Applications

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