Reduction of Coupling between Flush-Mounted Antennas

Authors

  • Prathap Valale Prasannakumar Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder Boulder, Colorado, USA, 80309
  • Mohamed A. Elmansouri Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder Boulder, Colorado, USA, 80309
  • Maxim Ignatenko Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder Boulder, Colorado, USA, 80309
  • Dejan Filipovic Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder Boulder, Colorado, USA, 80309

Keywords:

Bed of nails, coupling, method of moments

Abstract

This paper discusses some numerical aspects of the coupling study between two flush-mounted antennas. It is shown that a bed of nails embedded between flush-mounted quad-ridge horns separated by 20 cm (4 lambda 6 GHz) edge-to-edge greatly reduces coupling by about 17 dB at lower frequency end, where the electrical distance between antennas is the shortest. The considered antenna system operates from 6-19 GHz and has |S11| < -10 dB, and coupling < -60 dB. The numerical modelling is carried out using MoM and FEM solvers. The computed results are in good agreement with measurements.

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References

D. Bharadia, E. McMilin, and S. Katti, “Full duplex radios,” Proc. SIGCOMM’13 Conf., China, pp. 375-386, 2013.

J. A. M. Lyon, C. J. Digenis, W. W. Parker, and M. A. H. Ibrahim, “Electromagnetic coupling reduction techniques,” The University of Michigan, Ann Arbor, MI, USA, AFAL-TR-68-132, June 1968. Available: https://deepblue.lib.umich.edu/handle/2027.42/6402

D. Sievenpiper, “High-Impedance Electromagnetic Surfaces,” Ph.D. dissertation, Dept. Elect. Eng., Uni. California, Los Angeles, CA, 1999.

R. J. King and K. S. Park, “Synthesis of surface reactances using grounded pin bed structure,” in Electronics Letters, vol. 17, no. 1, pp. 52-53, Jan. 1981.

P. Valale Prasannakumar, M. A. Elmansouri, and D. S. Filipovic, “Wideband decoupling techniques for dual-polarized bi-static simultaneous transmit and receive antenna subsystem,” in IEEE Trans. Antennas and Propag., vol. 65, no. 10, pp. 4991-5001, Oct. 2017.

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Published

2021-07-22

How to Cite

[1]
Prathap Valale Prasannakumar, Mohamed A. Elmansouri, Maxim Ignatenko, and Dejan Filipovic, “Reduction of Coupling between Flush-Mounted Antennas”, ACES Journal, vol. 33, no. 10, pp. 1154–1155, Jul. 2021.

Issue

2018: Vol 33 Iss 10

Section

Articles