Ground-Based Augmentation System Antenna Array Size Reduction via Self-Cardioid Element

Authors

  • James A. Quinlan Department of Electrical and Computer Engineering Oakland University, Rochester, Michigan 48309, USA
  • Daniel N. Aloi Department of Electrical and Computer Engineering Oakland University, Rochester, Michigan 48309, USA

Keywords:

Antenna array synthesis, antenna design, array size reduction, cardioid pattern, global positioning system, ground-based augmentation system, multipath limiting antenna

Abstract

A Ground-Based Augmentation System (GBAS) monitors the signals of Global Navigation Satellite Systems and broadcasts differential correction signals. It relies on Multipath Limiting Antennas (MLAs) that can receive signals over almost the entire upper hemisphere while greatly attenuating signals reflected from the ground. The current Federal Aviation Administration (FAA)-approved system utilizes an MLA that is approximately 182.9 cm tall. In this paper, a substitute MLA is designed that is only 97.05 cm tall (approximately 44% reduction). The size reduction is accomplished by reducing the number of array elements from 19 to 11. We developed a novel self-cardioid antenna element that allows for this reduction.

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Author Biographies

James A. Quinlan, Department of Electrical and Computer Engineering Oakland University, Rochester, Michigan 48309, USA

James A. Quinlan received a Bachelor of Science degree in Electrical Engineering (2002) and Masters’ degrees in Electrical and Computer Engineering (2005) from Oakland University, Rochester, Michigan, USA. He is employed by General Dynamics Land Systems, where his work involves vehicle system integration, GPS performance, radiation, and survivability. He has several years of experience in managing computer engineering laboratories. Quinlan is a member of the Applied Computational Electromagnetics Society, Institute of Navigation, and Institute of Electrical and Electronics Engineers (IEEE).

Daniel N. Aloi, Department of Electrical and Computer Engineering Oakland University, Rochester, Michigan 48309, USA

Daniel N. Aloi received his B.S. (1992), M.S. (1996), and Ph.D. (1999) degrees in Electrical Engineering from Ohio University, located in Athens, Ohio, USA. He is a Professor in the Electrical and Computer Engineering Department at Oakland University (OU) and Founder and Director of OU’s Applied Electromagnetics and Wireless Lab (AEWL). Aloi’s research interests reside in applied electromagnetics with an emphasis on antenna measurements, modeling/analysis, and design. He is a member of the Applied Computational Electromagnetics Society (ACES) and the Institute of Navigation (ION) and a senior member of the Institute of Electrical and Electronics Engineers (IEEE). Aloi has authored or coauthored over 100 technical papers and is the primary inventor or coinventor on several patents.

References

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Published

2020-10-01

How to Cite

[1]
James A. Quinlan and Daniel N. Aloi, “Ground-Based Augmentation System Antenna Array Size Reduction via Self-Cardioid Element”, ACES Journal, vol. 35, no. 10, pp. 1228–1235, Oct. 2020.

Issue

2020: Vol 35 Iss 10

Section

General Submission