Railton, CJ, Paul, DL, Craddock, IJ, Hilton, GS
It has been recently shown that the efficiency of the finite-difference time-domain (FDTD) method for structures containing thin wires and metal edges is much increased by using modified assigned...
Dumanli, S, Tabak, Yasemin, Railton, CJ, Paul, DL, Hilton, GS
The properties of a four element slot antenna array mounted on a PDA for a MIMO system are investigated by means of a finite difference time domain analysis and a multipath channel model. The effects...
FDTD technique for modelling eight-element circular antenna array (2006)
Pesik, LJ, Paul, DL, Railton, CJ, Hilton, GS, Beach, MA
An eight-element circular antenna array consisting of an eight wire monopole mounted on a circular ground plane is modelled using the finite-difference time-domain (FDTD) method. Examples of...
Railton, CJ, Paul, DL, Craddock, IJ, Hilton, GS
A number of different improvements to the analysis by finite-difference time-domain (FDTD) of small structures, such as wires, strips and slots have been proposed in the literature. One of these...
Input and far-field responses of compact UWB antennas (2005)
Rogers, P, Hilton, GS, Craddock, IJ
With the desire for ever-increasing data-rates, coupled with the interest in techniques that offer interference mitigation, much research has focused upon ultra wide-band (UWB) systems that can...
Effect of antenna element properties and array orientation on performance of MIMO systems (2004)
Pal, A, Lee, BS, Rogers, P, Hilton, GS, Beach, MA, Nix, AR
This paper presents a MIMO throughput based assessment of three candidate antenna arrays, each of which was constructed from a different type of antenna element. A model of the MIMO channel resolved...
Effect of antenna element properties and array orientation on performance of MIMO systems (2004)
Pal, A, Lee, BS, Rogers, P, Hilton, GS, Beach, MA, Nix, AR
This paper presents a MIMO throughput based assessment of three candidate antenna arrays, each of which was constructed from a different type of antenna element. A model of the MIMO channel resolved...
Effect of antenna element properties and array orientation on performance of MIMO systems (2004)
Pal, A, Lee, BS, Rogers, P, Hilton, GS, Beach, MA, Nix, AR
This paper presents a MIMO throughput based assessment of three candidate antenna arrays, each of which was constructed from a different type of antenna element. A model of the MIMO channel resolved...
An experimental evaluation of three candidate MIMO array designs for PDA devices (2004)
Beach, MA, Hunukumbure, RMM, Williams, C, Hilton, GS, Rogers, P, Capstick, M, ...
A paper presented to the Joint COST 273/284 Workshop on Antennas and Related System Aspects in Wireless Communications, held in Gothenburg, Sweden, June 7-10, 2004
An experimental evaluation of three candidate MIMO array designs for PDA devices (2004)
Beach, MA, Hunukumbure, RMM, Williams, C, Hilton, GS, Rogers, P, Capstick, M, ...
A paper presented to the Joint COST 273/284 Workshop on Antennas and Related System Aspects in Wireless Communications, held in Gothenburg, Sweden, June 7-10, 2004
An experimental evaluation of three candidate MIMO array designs for PDA devices (2004)
Beach, MA, Hunukumbure, RMM, Williams, C, Hilton, GS, Rogers, P, Capstick, M, ...
A paper presented to the Joint COST 273/284 Workshop on Antennas and Related System Aspects in Wireless Communications, held in Gothenburg, Sweden, June 7-10, 2004
An investigation of pattern correlation and mutual coupling in MIMO arrays (2004)
Craddock, IJ, Hilton, GS, Urwin-Wright, PR
With accompanying conference presentation
Hilton, GS, Urwin-Wright, PR, Craddock, IJ
In this paper, the limitations of pattern correlation, based on simple approximations and 2D data, is illustrated. Full 3D correlation is explained with reference to an array of isotropic radiators...
A tuneable electrically-small antenna operating in the 'DC' mode (2003)
Urwin-Wright, PR, Hilton, GS, Craddock, IJ, Fletcher, PN
The introduction of a shorting pin to the centre of an annular slot results in an additional, 'DC', mode being excited. Operation in this mode results in an electrically small structure, which is...
A tuneable electrically-small antenna operating in the 'DC' mode (2003)
Urwin-Wright, PR, Hilton, GS, Craddock, IJ, Fletcher, PN
The introduction of a shorting pin to the centre of an annular slot results in an additional, 'DC', mode being excited. Operation in this mode results in an electrically small structure, which is...
A reconfigurable electrically-small antenna operating in the 'DC' mode (2003)
Urwin-Wright, PR, Hilton, GS, Craddock, IJ, Fletcher, PN
In this paper, an explanation of the design of an electronically tunable electrically-small antenna, operating in the 'DC' mode is presented. Although this antenna has a narrow instantaneous...
A reconfigurable electrically-small antenna operating in the 'DC' mode (2003)
Urwin-Wright, PR, Hilton, GS, Craddock, IJ, Fletcher, PN
In this paper, an explanation of the design of an electronically tunable electrically-small antenna, operating in the 'DC' mode is presented. Although this antenna has a narrow instantaneous...
The analysis of balanced feed antenna structures for use in integrated antenna-transceivers (2003)
Hilton, GS, Urwin-Wright, PR, Hunt-Grubbe, HWW
For software defined radio and, indeed, any ultrawide band communications system, it is essential that good control of the antenna's pattern characteristics (coverage and polarisation) is maintained...
An electrically-small annular slot operating in the 'DC' mode (2003)
Hilton, GS, Urwin-Wright, PR, Hunt-Grubbe, HWW
This paper considers the operation of an the annular slot antenna operating in the 'DC' mode. This stripline-fed antenna includes a shorting pin between the central resonating element and ground that...
The analysis of balanced feed antenna structures for use in integrated antenna-transceivers (2003)
Hilton, GS, Urwin-Wright, PR, Hunt-Grubbe, HWW
For software defined radio and, indeed, any ultrawide band communications system, it is essential that good control of the antenna's pattern characteristics (coverage and polarisation) is maintained...
An electrically-small annular slot operating in the 'DC' mode (2003)
Hilton, GS, Urwin-Wright, PR, Hunt-Grubbe, HWW
This paper considers the operation of an the annular slot antenna operating in the 'DC' mode. This stripline-fed antenna includes a shorting pin between the central resonating element and ground that...
Comparison of an electrically-small planar antenna array with a conventional monopole array (2002)
Urwin-Wright, PR, Hilton, GS, Craddock, IJ, Fletcher, PN
A new type of linear array is proposed which utilises annular slot antennas operating in the 'DC' mode. These conformal elements are electrically-small and have wire-monopole-like radiation patterns....
Comparison of an electrically-small planar antenna array with a conventional monopole array (2002)
Urwin-Wright, PR, Hilton, GS, Craddock, IJ, Fletcher, PN
A new type of linear array is proposed which utilises annular slot antennas operating in the 'DC' mode. These conformal elements are electrically-small and have wire-monopole-like radiation patterns....
Microwave detection of buried mines using non-contact, synthetic near-field focusing (2001)
Benjamin, R, Craddock, IJ, Hilton, GS, McCutcheon, E, Nilavalan, R, Crisp, GN
Existing ground penetrating radars (GPR) are limited in their 3-D resolution. For the detection of buried land-mines, their performance is also seriously restricted by 'clutter'. Recent work by the...
Nilavalan, R, Hilton, GS, Benjamin, R
A printed bowtie antenna for a post-reception synthetic focusing surface penetrating radar (PRSF-SPR) has been developed with the aid of finite difference time domain analysis. Antenna free space...
The analysis of medium-sized arrays of complex antenna elements by means of a full-wave technique often requires impractical amounts of computer power. Nevertheless, it is essential that all the...
Post-detection synthetic near field focusing in radar or sonar (1999)
Benjamin, R, Hilton, GS, Litobarski, S, McCutcheon, E, Nilavalan, R
Sequential transmission from the elements of a 2D array, with parallel reception and recording by all, permits major economies in transmitted and irradiating power, and provides significant novel...
Darwood, PB, Fletcher, PN, Hilton, GS
Beam synthesis remains one of the most difficult problems for an antenna array designer, this task being made more difficult when one limits the number of elements to a handful. Pattern synthesis in...
Analysis and realisation of low-cost damped screened rooms (1998)
Izzat, N, Hilton, GS, Railton, CJ, Craddock, IJ, Meade, SA
Radiated emission measurements in screened rooms suffer from the excitation of room resonances. Severe problems in measurement repeatability and difficulties in correlating emission measurements in a...
Difference pattern synthesis in small planar phased arrays (1997)
Darwood, PB, Fletcher, PN, Hilton, GS
A pattern synthesis technique for low sidelobe arbitrarily scanned difference beams in small planar phased arrays is presented. The approach is based on adaptive array theory and is the development...
Modelling a three-element printed dipole antenna array using the FDTD technique (1997)
Hilton, GS, Railton, CJ, Ball, GJ, Dean, M, Hume, AL
This paper shows that finite-difference time-domain (FDTD) analysis incorporating a graded grid may be used to accurately model a three-element triangular array of printed dipoles. Each element forms...
Modelling a three-element printed dipole antenna array using the FDTD technique (1997)
Hilton, GS, Railton, CJ, Ball, GJ, Dean, M, Hume, AL
This paper shows that finite-difference time-domain (FDTD) analysis incorporating a graded grid may be used to accurately model a three-element triangular array of printed dipoles. Each element forms...
Pattern synthesis in small phased arrays using adaptive array theory (1997)
Darwood, PB, Fletcher, PN, Hilton, GS
A pattern synthesis technique for low sidelobe difference and scanned beams in small phased arrays is presented. The approach is based on adaptive array theory and is a development of a technique...
Izzat, N, Hilton, GS, Railton, CJ
Screened rooms are an alternative to open area test sites for radiative emission measurements. The cost of screened anechoic rooms by comparison is considerable, especially for low-frequency...
Method for the analysis of finite arrays of complex antenna elements (1996)
Railton, CJ, Meade, SA, Hilton, GS
The calculation of the radiation pattern and return losses of finite arrays of complex antenna elements normally requires much computer effort. To facilitate the solution of this type of problem on a...
An adaptive microstrip patch antenna for use in portable transceivers (1996)
Rostbakken, O, Hilton, GS, Railton, CJ
This paper describes an adaptive frequency tunable microstrip patch antenna. The introduction of an adaptive feedback loop enables the patch antenna to optimise the antenna-feed impedance match. As a...
Adaptive feedback frequency tuning for microstrip patch antennas (1995)
Rostbakken, O, Hilton, GS, Railton, CJ
Antennas for hand-held portable equipment must be lightweight and compact. Microstrip patch antennas meet these requirements and, in addition, their manufacture using printed circuit technology...
Hilton, GS, Railton, CJ, Beach, MA
With the increasing interest in the use of printed circuit techniques for the manufacture of millimetre-wave antennas, there is a need to accurately model the radiation, coupling, susceptive loading...
Hilton, GS, Railton, CJ, Beach, MA
With the increasing interest in the use of printed circuit techniques for the manufacture of millimetre-wave antennas, there is a need to accurately model the radiation, coupling, susceptive loading...
Hilton, GS, Railton, CJ, Beach, MA
With the increasing interest in the use of printed circuit techniques for the manufacture of millimetre-wave antennas, there is a need to accurately model the radiation, coupling, susceptive loading...