Frequency scanning microstrip antennas
- 1 March 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 27 (2) , 146-150
- https://doi.org/10.1109/tap.1979.1142049
Abstract
The principles of using radiating microstrip resonators as elements in a frequency scanning antenna array are described. The resonators are cascade-coupled. This gives a scan of the main lobe due to the phase-shift in the resonator in addition to that created by the transmission line phase-shift. Experimental results inX-band, in good agreement with the theory, show that it is possible to scan the main lobe an angle of\pm30\degby a variation of the frequency\pm300MHz, and where the 3 dB beamwidth is less than10\deg. The directivity was 14.7 dB, while the gain was 8.1 dB. The efficiency might be improved by a trade-off between the efficiency and the scanning angle, or by using a better amplitude distribution.Keywords
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