Antenna arrangements having radiating elements radiating at diff

Details Antenna arrangements having radiating elements radiating at diff Antenna arrangements having radiating elements radiating at diff

1998-02-23

2000-07-18

Ho, Tan

Communications: radio wave antennas

Antennas

Microstrip

H01Q 138

Patent

active

060913657

ABSTRACT:
An antenna arrangement includes a number of first radiating elements radiating in a first frequency band and a number of second radiating elements radiating in a second frequency band. The first and the second radiating elements are arranged in different planes. The second radiating elements are arranged in relation to the first radiating elements in such a way that each second radiating element partly overlaps the corresponding first radiating element. Each radiating element has at least one resonant dimension and the resonant dimension of the first radiating element is approximately twice the resonant dimension of the second radiating elements and the second radiating elements radiate at a frequency, or in a frequency band, which is approximately twice that of the first radiating element(s).

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A. A. Aziz et al., "Dual Band Circularly Polarised Microstrip Array Element,",Proc. Journe'es Internationales de Nice sur les Antennes(Jina 90), Nov. 1990, pp. 321-324.
J.R. James, "Superimposed Dichroic Microstrip Atenna Arrays," IEEE Proceedings, vol. 135, Pt.H, No. 5, Oct. 1988, pp. 304-212.

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