Analog Direction of Arrival Estimation Using an Electronically-Scanned CRLH Leaky-Wave Antenna

A novel direction of arrival (DoA) estimation system based on a leaky-wave antenna (LWA) is presented. Compared to traditional array-based DoA techniques, which require multiple radiating elements, a large feeding network, and expensive phase shifters consuming power, the proposed scheme requires only a simple, compact, and low-cost radiating element consuming no power. The system estimates the DoA by measuring the received power at both ports of the LWA using detectors as the beam is scanned. It is implemented here using a composite right/left-handed (CRLH) leaky-wave antenna (LWA), selected for its efficient electronic full-space scanning capability. A detailed theoretical explanation is presented. Three methods of operation are described: forward scanning, backward scanning, and full-space scanning. Furthermore, full-wave simulation and experimental results both validate the theoretical analysis. To the best of the authors' knowledge, this is the first time a LWA is employed in a DoA system.

[1]  Tatsuo Itoh,et al.  Electromagnetic metamaterials : transmission line theory and microwave applications : the engineering approach , 2005 .

[2]  G. Kumar,et al.  Wideband orthogonal square monopole antennas with semi-circular base , 2001, IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229).

[3]  J. Redi,et al.  A brief overview of ad hoc networks: challenges and directions , 2002, IEEE Communications Magazine.

[4]  M. N. Suma,et al.  A compact hybrid CPW fed planar monopole/dielectric resonator antenna , 2007 .

[5]  Chen Sun,et al.  Direction of Arrival Estimation with a Novel Single-Port Smart Antenna , 2004, EURASIP J. Adv. Signal Process..

[6]  Zhi Ning Chen,et al.  An investigation into measurement of handset antennas , 2005, IEEE Transactions on Instrumentation and Measurement.

[7]  Smail Tedjini,et al.  efficient electronically scanned CRLH leaky wave antenna using independent double uning for impedance equalization , 2008 .

[8]  Ahmed A. Kishk,et al.  Broadband stacked dielectric resonator antennas , 1989 .

[9]  A. Kishk,et al.  UWB Antenna With Single or Dual Band-Notches for Lower WLAN Band and Upper WLAN Band , 2009, IEEE Transactions on Antennas and Propagation.

[10]  K. Esselle,et al.  Prediction of the Notch Frequency of Slot Loaded Printed UWB Antennas , 2007, IEEE Transactions on Antennas and Propagation.

[11]  Ahmed A. Kishk,et al.  Wide-band truncated tetrahedron dielectric resonator antenna excited by a coaxial probe , 2003 .

[12]  T. Itoh,et al.  Electronically scanned composite right/left handed microstrip leaky-wave antenna , 2004, IEEE Microwave and Wireless Components Letters.

[13]  T. Itoh,et al.  Metamaterial-based electronically controlled transmission-line structure as a novel leaky-wave antenna with tunable radiation angle and beamwidth , 2004, IEEE Transactions on Microwave Theory and Techniques.

[14]  Wen-Chung Liu,et al.  Ultra‐wideband printed fork‐shaped monopole antenna with a band‐rejection characteristic , 2007 .

[15]  Ahmed A. Kishk,et al.  Ultra-wideband dielectric resonator antennas , 2010, 2010 International Workshop on Antenna Technology (iWAT).

[16]  Sheau-Shong Bor,et al.  Impedance improvement of miniature UWB antenna , 2007 .

[17]  Ahmed A. Kishk,et al.  UWB dielectric resonator antenna mounted on a vertical ground plane edge , 2009, 2009 IEEE Antennas and Propagation Society International Symposium.

[18]  Xuan Hui Wu,et al.  Study of an Ultrawideband Omnidirectional Rolled Monopole Antenna With Trapezoidal Cuts , 2008, IEEE Transactions on Antennas and Propagation.

[19]  T. Ohira,et al.  Hand-held microwave direction-of-arrival finder based on varactor-tuned analog aerial beamforming , 2001, APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577).

[20]  Henry Jasik,et al.  Antenna engineering handbook , 1961 .

[21]  Kin-Lu Wong,et al.  Broadband omnidirectional metal-plate monopole antenna , 2005, IEEE Transactions on Antennas and Propagation.

[22]  T. Ohira.  Adaptive array antenna beamforming architectures as viewed by a microwave circuit designer , 2000, 2000 Asia-Pacific Microwave Conference. Proceedings (Cat. No.00TH8522).

[23]  L. Godara.  Application of antenna arrays to mobile communications. II. Beam-forming and direction-of-arrival considerations , 1997, Proc. IEEE.

[24]  C. Caloz,et al.  CRLH metamaterial leaky-wave and resonant antennas , 2008, IEEE Antennas and Propagation Magazine.

[25]  D.R. Jackson,et al.  Full-Wave Modal Dispersion Analysis and Broadside Optimization for a Class of Microstrip CRLH Leaky-Wave Antennas , 2008, IEEE Transactions on Microwave Theory and Techniques.