A Novel Approach for Near Field Beamforming

Preetham Shankpal(1*), Varun V. Arur(2), Govind R. Kadambi(3), B. R. Karthikeyan(4), James Shuttleworth(5)

(1) University of Warwick, United Kingdom
(2) Coventry University, United Kingdom
(3) M S Ramaiah School of Advanced Studies, Bangalore, India
(4) Coventry University, United Kingdom
(5) Coventry University, United Kingdom
(*) Corresponding author


DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)

Abstract


A novel approach for near field beamforming is proposed in this paper which is also valid for far field. Unlike the method of radial reciprocity, the proposed method does not mandate the requirement of 3D near field data of the beamforming array and the beamforming weights are applied directly to the near-field specifications. Numerous simulations with linear and planar array configurations reveal that the proposed technique yields satisfactory beamforming results even at a distance of 2 from the antenna array. At distances equal to and greater than 3, the results obtained are relatively more accurate. The paper also compares beamforming patterns of both linear and planar arrays obtained with proposed method with established techniques and indicates the close agreement in results. The proposed method is likely to find relevance in system studies such as Through Wall Imaging (TWI).
Copyright © 2014 Praise Worthy Prize - All rights reserved.

Keywords


Near-Field; Linear and Planar Array; Beamforming

Full Text:

PDF


References


F. Khalil, J.P. Jullien, and A. Gilloire, Microphone array for sound pickup in teleconference systems, J.AudioEngSoc.,1994,Vol. 42, no.9, pp. 365–371.

R.A. Kennedy, D.B. Ward, T.D.Abhayapala,, Broadband Near-field Beamforming using a Radial Beam pattern Transformation, IEEE Transaction on Signal Processing, August 1998, Vol.46,No.8.,pp. 2147-2156.

R.A. Kennedy, D.B. Ward, T.D.Abhayapala,Near-field Beamforming Using Radial Reciprocity, IEEE Transaction on Signal Processing,1999, Vol.46,No.48.,pp. 33-40.

N.S. Karnik, R.Tulpule, M.Shah, P.S. Verma, C.Y. Huang, J.Y. Cha, A. Pandya, S. Usman, V. Pulipati, P. Pagadala and B.P. Kumar, 2010, Design, simulation and experimental study of near-field beam forming techniques using conformal waveguide arrays, IET Microwaves, Antennas & Propagation, Vol. 4, Iss. 2, pp. 162–174.

Balanis C. A., 2005. Antenna Theory, Analysis and Design, Third Edition, A John Wiley & Sons, Inc., Publication.

M.S.Narasimhan, and K.M. Prasad,1981, GTD analysis of Near Field Patterns of a Prime Focus Symmetric Paraboloidal Reflector Antenna, IEEE Transactions on Antennas and Propagation, Vol. 29, pp- 959 – 961.


Refbacks

  • There are currently no refbacks.



Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2019 Praise Worthy Prize