Page 267 - 2024-Vol20-Issue2

263 | Majeed

Fig. 11. Comparison of reflection coefficient variations
against frequency for simulated and measured suggested
UWB antenna with two-bands rejection functionality.

(a)

Fig. 12. Performance Comparison of gain variations with
frequency for simulated and measured suggested UWB
antenna with two-bands rejection functionality.

(b) two-rejection bands, the proposed UWB planar printed patch
Fig. 10. Photo for the manufactured suggested printed patch antenna rejects interfering signals at two defined bands. It is
antenna with two-bands rejection functionality (a) front view possible to adjust the notch characteristics by changing the
and (b)back view. width and length of the slots. The measured outcomes of
the tests conducted on the manufacturing prototype are com-
Together with these decreases in radiation efficiency, the corre- pared with the simulation’s results. The suggested antenna
sponding gains also decrease by around 4.97 dB and 2.89 dB, model exhibits excellent two-band rejection characteristics,
and the reflection coefficient increases at the notched fre- high rejection and steady passband gain. As a good agreement
quencies (Fig. 11). These findings demonstrate that for both was yields between the measured and simulated results, so
rejection bands, the dual-rejection band antenna has a larger the antenna recommended in this work is an excellent option
reflection coefficient, low gain and low radiation efficiency. for removing undesired or bothersome frequencies from the
intended bands.
To evaluate the performance of the antenna even more,
Table 2 compares the attributes of the suggested antenna with CONFLICT OF INTEREST
those of other antennas intended for UWB applications. The
table makes it evident that the suggested antenna’s size, gain, The author has no conflict of relevant interest to this article.
and operating bandwidth are competitive.
REFERENCES
IV. CONCLUSION
[1] O. Kumar and S. K. Soni, “Design and analysis of ultra-
In this paper a suggested ultra-wide band antenna operating wideband micro strip patch antenna with notch band
in a range of frequency from 3.168 GHz to over 15 GHz was characteristics,” in MATEC Web of conferences, vol. 57,
designed and analyzed. By etching slots with inverted U and p. 01020, EDP Sciences, 2016.
U shapes in the patch to achieve single-rejection band and
[2] I. Idris, M. Hamid, K. Kamardin, and M. Rahim, “Wide
to multiband elliptical monopole reconfigurable antenna