Mutual Coupling Effect on Ultrawideband Linear Antenna Array Performance
Joint Authors
Ahmed, Osama
Sebak, Abdel-Razik
Source
International Journal of Antennas and Propagation
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-08-18
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
This paper studies the mutual coupling effect between array elements of two- and four-element ultrawideband (UWB) linear arrays on their performances.
For simplicity, it is assumed that both antenna arrays are fed by independent microstrip lines with the same power amplitudes and equal phases.
From our study, array bandwidth improvement is achieved for both array types when the mutual coupling is strong enough or interelement spacing is small.
The mutual coupling also enhances the array realized gain especially in the midfrequency band (5–8.5 GHz) while it deteriorates the gain outside that frequency range.
Proper tuning for interelement spacing with enough mutual coupling enhances the array realized gain at most frequencies and makes it more stable across the desired frequency range.
From the radiation pattern results, the grating lobes appear in UWB arrays when the element spacing is greater than two wavelengths at the upper edge frequency, 10.6 GHz, or half wavelength at the lower edge frequency 3.1 GHz.
Two fabricated array prototypes with corporate feed are fabricated and tested to validate the theoretical analysis.
The effect of using T-junction power divider is clear on the reflection coefficient |S11|.
Both numerically simulated and experimental results successfully demonstrate our analysis.
American Psychological Association (APA)
Ahmed, Osama& Sebak, Abdel-Razik. 2011. Mutual Coupling Effect on Ultrawideband Linear Antenna Array Performance. International Journal of Antennas and Propagation،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-449115
Modern Language Association (MLA)
Ahmed, Osama& Sebak, Abdel-Razik. Mutual Coupling Effect on Ultrawideband Linear Antenna Array Performance. International Journal of Antennas and Propagation No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-449115
American Medical Association (AMA)
Ahmed, Osama& Sebak, Abdel-Razik. Mutual Coupling Effect on Ultrawideband Linear Antenna Array Performance. International Journal of Antennas and Propagation. 2011. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-449115
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-449115