The overall size of the proposed single band notch antenna
is 22 x 24 [mm.sup.2], which is smaller than the antennas presented in [21-24], designed for the same application.
Lee, "Design of a planar half-circle-shaped UWB notch antenna
," Microwave and Optical Technology Letters, vol.
Ebine, "Bi-directional notch antenna
with parasitic elements for tunnel booster system," Antennas and Propagation Society International Symposium, Vol.
The printed circuit slotline or notch antenna
is an attractive choice for phased arrays and multibeam antennas because it is simple to fabricate.|1-3~ A slotline radiating element is connected to a transmission line through a slot transition.
In the designing of triple or multiband notch antenna
, it is difficult to adjust and to control the frequency center of the notch bands in a limited space.
In this paper, a novel coplanar waveguide (CPW)-fed two-arm Archimedean spiral slot band notch antenna
using the slotted technique is presented.
Other than the notched band, the impedance characteristics of the proposed band notch antenna
are similar to that of antenna without notched band.
The notch antenna
has many desirable characteristics, including broad impedance matching bandwidth, uniplanar construction, good reproducibility, scalability to sub-mm-wavelengths and ease of integration of solid-state devices.
In the designing of triple or multi-band notch antenna
, it is difficult to control bandwidth of the notch-bands in a limited space.
Ghobadi, "Probing the feed line parameters in Vivaldi notch antenna
," Progress In Electromagnetics Research B, Vo.
The notch antenna
has many desirable characteristics, including broad impedance matching bandwidth, planar nature, good reproducibility and ease of integration to passive  and active devices.
Figure 7 shows the measured as well as simulated VSWR of the proposed fractal band notch antenna
. It shows that the antenna provides a sharp band notch of 5-6 GHz (VSWR > 2), so the antenna inhibits interference with the existing WLAN frequencies.