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International Journal of Information Technology & Computer Science ( IJITCS )

Abstract :

The phase measurement by using a wideband six-port correlator for Direction-of-Arrival (DOA) detection in radar system is presented. DOA detection is a fundamental procedure required by several monitoring and tracking. Phase-measurement DOA detection is commonly used in nowadays systems, but existing methods are based on traditional mixer architectures or expensive direct conversion devices which is high complexity and costly while compromising robustness. In this paper, an innovative measurement technique based on the six-port network principle is presented. The aim is to investigate a six-port correlator as a valid technology for direction finding and distance measurement. Its operation in reflection coefficient is tested with the six-port model as device under test (DUT) by vector network analyzer (VNA). Data measured is then compiled in MATLAB and followed by investigation through simulation in Agilent-ADS. The wideband characteristics of six-port model are analyzed and verified across frequency of 3-11GHz. Numerical effort such as BER method and addition of band pass filter can be applied in the future work to improve the project performance .

Keywords :

: Six-Port Network, Direction-Of-Arrival, Phase Measurement, Passive Componen..

References :

  1. A. Koelpin, G. Vinci, B. Laemmle, D. Kissinger, and R. Weigel, "The Six-Port in Modern Society," IEEE Microwave Magazine, vol. 11(7), Dec. 2010, pp. 35-43.
  2. G. Vinci, A. Keplin, R. Weigel, “Employing six-port technology for phase-measurement-based calibration of automotive radar”, Asia Pacific Microwave Conference, Singapore, Dec. 2009.
  3. F. Harabi, I. Sfar, A. Gharsallah, “A direction of arrival estimation system using five-ports reflect meter”, in: 5th Intern.Conf, SETIT, Tunisia, 2009.
  4. I. Sfar, L. Osman, A. Gharsallah, “A five-port reflect meter for communication receiver applications”, in: 8th Intern. Multi-Conference on SSD, Tunisia, 2011.

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