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Band-reject ultra-wideband monopole antenna using patch loading

Koohestani, M. ; Pires, N. ; Skrivervik, A. K. ; Moreira, A. A.

Measurement: Journal of the International Measurement Confederation Vol. 48, Nº 16, pp. 974 - 975, August, 2012.

ISSN (print): 0263-2241
ISSN (online):

Journal Impact Factor: 0,662 (in 2008)

Digital Object Identifier: 10.1049/el.2012.1771

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Abstract
Proposed is a new simple technique for achieving band rejection
characteristics in ultra-wideband monopole antennas. Two band
notches were added to an existing UWB antenna by gluing a
padding patch printed on a small single-layer piece of commercial sub-
strate. The design of the new proposed structure has a controllable
rejection in the 5 GHz WLAN and 8 GHz ITU frequencies while main-
taining a wideband performance from 2.9 GHz to more than 12 GHz
based on VSWR ≤ 2. A good agreement between measurement and
simulation was achieved. Measurements confirm that the technique
introduces negligible antenna radiation pattern distortion except at
the notched frequencies.