Abstract
A new compact pentagonal microstrip patch antenna with slotted ground plane structure, developed for use in ultrawideband applications, is studied in this article. The proposed antenna is mainly constituted by a pentagonal shaped patch antenna, a defected ground plane structure, two stubs, and four slots to improve the bandwidth. The designed antenna has an overall dimension of 30 × 17.59 × 1.6 mm3, for WIMAX/WLAN/WiFi/HIPERLAN-2 /Bluetooth/LTE/5G applications with a very large bandwidth starting from 2.66 to 10.82 GHz (S11 < − 6 dB). A parametric study of the ground plane structure was carried out to find the final and the optimal UWB antenna, and to confirm that the antenna has good performance and broader bandwidth. The proposed antenna prototype has been fabricated. The measured results indicate that the antenna has a good impedance matching. The antenna has an electrically small dimension with a good gain, a notable efficiency, and a wide impedance bandwidth, which makes this antenna an excellent candidate for ultrawideband wireless communication, microwave imaging, radar applications, and the major part of the mobile phone frequencies as well.
Highlights
Ultrawideband communication systems gain more interest since 2002 because of its wideband, low power consumption, high signal quality, and low profile [1]
A new ultrawideband antenna for UWB applications is studied; the suggested antenna consists of a pentagonal shaped patch antenna, a microstrip feed line shifted from the center of the defected substrate, a defected ground plane structure, two stubs, and four slots to enhance the bandwidth
We found the defected ground structure (DGS)
Summary
Ultrawideband communication systems gain more interest since 2002 because of its wideband, low power consumption, high signal quality, and low profile [1]. A new ultrawideband antenna for UWB applications is studied; the suggested antenna consists of a pentagonal shaped patch antenna, a microstrip feed line shifted from the center of the defected substrate, a defected ground plane structure, two stubs, and four slots to enhance the bandwidth. For enhancing the antenna bandwidth, the square shape of the radiating patch is changed into a pentagonal shape where the number of straight lines is five, and the length is P [named Ant. 2]. To obtain the desired ultrawideband antenna (Ant.d), two rectangular stubs with a dimension of 6 × 1 mm and 3.5 × 1 mm are embedded in the higher left and the lower right of the first rectangular cut respectively
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