Development of a frequency-invariant array antenna of low sidelobe characteristics

Yamada, Yoshıhıde; Imamura, K.; Kobayashi, T.

doi:10.1109/aps.2000.875267

Cited by 2 publications

(2 citation statements)

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“…The reverse operator [T AE (2) ] ϭ [T EA (2) ] Ϫ1 is the final operation in Eq. (14). It acts on the pattern vector that has been constrained to satisfy the requirements of the small array, but produces an excitation vector of N elements.…”

Section: Synthesis Of Arrays With a "Zooming" Capabilitymentioning

confidence: 99%

“…This represents an example of a "switched-element" array, and is considered in section 3. Another example is the interesting wideband array suggested in [14], which consists of a central set of uniformly spaced elements plus additional elements arranged in an almost log-periodic fashion. Sets of elements are connected through a cascade of low-pass filters in such a way that outer elements are "turned off" in a controlled manner, as the frequency increases from the lower to the upper operating frequency of the array.…”

Section: Introductionmentioning

confidence: 99%

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Solution of “switched element” array synthesis problems using the parallel generalized projection algorithm

Swierczynski

McNamara

2004

Micro & Optical Tech Letters

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In certain antenna arrays (“switched‐element” arrays), some of the radiating elements are turned on or off during operation to provide some desired reconfigurability at different times, or are effectively turned on or off at different frequencies, through the use of filters connected to groups of radiating elements, in order to retain the same performance over wide‐frequency bands. In such circumstances, the excitations of the elements must be the same, irrespective of whether all or only some of the elements are being used. Thus, one may wish to synthesize an array (that is, determine its element excitations) so that the required performance is obtained under different sets of circumstances. In this paper, we indicate how the use of a parallel approach allows the method of generalized projections to be used for such synthesis problems, and demonstrate its use for a specific example. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 465–471, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20006

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Section: Synthesis Of Arrays With a "Zooming" Capabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%