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Browsing 10 Technology by Author "Sanagavarapu Ananda"

Now showing items 1-20 of 31

Characterize the indoor multipath propagation for MIMO communications

Tang Zhongwei; Sanagavarapu Ananda (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2005)

In this paper, the statistic relationship between the characteristics of multipaths and the performance of multipleinput multiple-output (MIMO) systems in indoor environments is explored using channel measurements. Our ...
A Circularly Polarised Stacked Electromagnetically Coupled Patch Antenna

Chung Kwok Lun; Sanagavarapu Ananda (Institute of Physics, 2007)
CPW-Fed Symmetrically Modified Ultra-Wideband Planar Antenna

Qiu Xiao Ning; Sanagavarapu Ananda (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2005)

CPW-fed symmetrical modified planar antenna for ultra-wideband wireless applications is proposed. Parametric study on modification parameters was conducted to identify the designs that provide satisfactory performance ...
Design of Stacked Circular/Quasi-Elliptical Patch Array for Broadband CP Applications

Chung Kwok Lun; Sanagavarapu Ananda (IEEE Press, 2003)

This paper presents a design of circularly polarised 4-element planar subarrays composed of low axial-ratio stacked patch elements in X-band. The wideband circular polarisation is excited using stacked circular disc and ...
Dual Band CPW-Fed Printed T-Shaped Planar Antenna

Chiu Heng-Mao; Qiu Xiao Ning; Sanagavarapu Ananda (Chinese Institute of Electronics, 2005)

A dual-band printed T-shaped planar antenna fed by coplanar waveguide (CPW) is designed. The printed T-shaped antenna is comprised of two horizontal arms of different lengths and an L-shaped shorted strip which ...
Effect of Dielectric Material Tolerances On the Performance of Singly-fed Circularly Polarised Stacked Patch Antennas

Chung Kwok Lun; Sanagavarapu Ananda (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2004)
Effect of Superstrate Thickness on the Performance of Broadband Circularly Polarised Stacked Patch Antenna

Chung Kwok Lun; Sanagavarapu Ananda (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2004)

A dielectric superstrate or radome is desirable to protect the copper patch of the microstrip antenna in many applications, especially for the outdoor wireless communications. The dielectric cover offers such a protection ...
Effect of the strongest multipath component on indoor MIMO performance

Tang Zhongwei; Sanagavarapu Ananda (IEEE, 2005)

We have investigated experimentally the effect of the strongest multipath component on the achievable LOS/NLOS MIMO capacity in an indoor environment. Our results demonstrate the effect of the contribution of the strongest ...
EM techniques for the detection of breast cancer

Yang Fan; Sanagavarapu Ananda (IEEE, 2010)

Radar based microwave imaging technique has great potential for breast cancer detection [1]. It has been demonstrated by recent experiments that the data-adaptive radar microwave imaging reveals good image resolution [4]. ...
Evaluation of the Performance of Indoor MIMO Systems

Tang Zhongwei; Sanagavarapu Ananda (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2003)

From a system point of view, the capacity and diversity are the two main characteristics afforded by the multiple-input-multiple-output (MIMO) systems. The increasing of capacity of multiple-input-multiple-output ...
A High Performance Circularly Polarised Electromagnetically Coupled Patch Antenna with Low Mutual Coupling

Chung Kwok Lun; Sanagavarapu Ananda (Australian Government IPS Radio and Space Services, 2004)

A broadband circularly polarised stacked patch antenna element and a 4-element planar array, which have high efficiencies at 10 GHz, are presented in this paper. In addition to the low axial ratio given by the array, all ...
A hybrid boundary condition for robust particle swarm optimization

Huang Tony; Sanagavarapu Ananda (IEEE Antennas and Propagation Society, 2005)

The particle swarm optimization (PSO) technique is a powerful stochastic evolutionary algorithm that can be used to find the global optimum solution in a complex search space. However, it has been observed that there ...
Indoor Directional Channel Modelling for Future Wireless Communications

Tang Zhongwei; Sanagavarapu Ananda (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2004)
An investigation into antenna arrays composed of broadband circularly polarised EMCP elements at X-band

Chung Kwok Lun; Sanagavarapu Ananda (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2003)
An investigation of MIMO performance in the indoor Ricean environment

Tang Zhongwei; Sanagavarapu Ananda (Springer, 2001)
Localization of Electromagnetic Radiating Sources in the Near-field of a Uniform Circular Array

Abedin Mohammed; Sanagavarapu Ananda (IEICE, 2006)
Localization of Near-Field Radiating Sources with an Arbitrary Antenna Array

Abedin Mohammed; Sanagavarapu Ananda (IEEE Computer Soc, 2008)

n this paper we introduce a mathematical modelling of signal which is considered to be received from the near-field of an arbitrary antenna array. The signal model of our formulation is almost similar to beamspace processing ...
A Microparticle Swarm Optimizer For The Reconstruction Of Microwave Images

Huang Tony; Sanagavarapu Ananda (Institute of Electrical and Electronics Engineers, 2007)

A novel optimization technique known as the microparticle swarm optimizer ( PSO) is proposed for high-dimensional microwave image reconstruction. With the proposed PSO, good optimization performance can be obtained ...
Microwave imaging of three-dimensional dielectric objects

Huang Tony; Sanagavarapu Ananda (John Wiley and Sons Inc, 2002)
ML based time reversal microwave imaging for the localisation of breast tissue malignancies

Abedin Mohammed; Sanagavarapu Ananda (IEEE, 2010)

Imaging of malignant tissues at early stage is a challenging problem because of higher tissue heterogeneities create clutter signature very similar to the response from tumour. This requires a powerful imaging algorithm ...

Now showing items 1-20 of 31

Browsing 10 Technology by Author "Sanagavarapu Ananda"

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Browsing 10 Technology by Author "Sanagavarapu Ananda"