Efficiency calculation of feed structures and optimum number of antenna elements in a subarray for highest G/T

Date

2004-04-01

Author

Demir, S

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For an antenna array, different feed structure topologies may yield the same radiation characteristics. However, different topologies may result in different efficiency and noise performance. In this paper, parallel arm antenna arrays are analyzed for efficiency and noise temperature using the noise equivalent line length method (NELL) with the number of antenna elements in a subarray as a parameter. It is shown that efficiency of an antenna array feed structure as well as its noise temperature can be calculated using the NELL method. The comparison of the two parameters, efficiency and noise temperature, yield the optimum number of antenna elements in a subarray of a parallel arm antenna array for the highest G/T ratio.

Subject Keywords

Electrical and Electronic Engineering

URI

https://hdl.handle.net/11511/64130

Journal

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION

DOI

https://doi.org/10.1109/tap.2004.825685

Collections

Department of Electrical and Electronics Engineering, Article

Citation Formats

S. Demir, “Efficiency calculation of feed structures and optimum number of antenna elements in a subarray for highest G/T,” IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 52, no. 4, pp. 1024–1029, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64130.