English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Wideband design of coaxially fed U-slot cut patch is a widely reported configuration. It yields a bandwidth of 20–25% on a substrate thickness of 0.06–0.07 λ g . In all the reported designs, narrower U-slot has been used as it yields required impedance matching to achieve the wideband response. In this paper, initially a detailed study is presented to explain the effects of employing wider U-slot in the rectangular patch to achieve the wider bandwidth. A further modified design of U-slot cut rectangular microstrip antenna is presented, to achieve the impedance matching using a wider U-slot. The modifications in the U-slot cut patch yield optimum possible impedance around the patch TM 10  resonant mode that optimizes the loop position inside VSWR = 2 circle, to achieve the maximum bandwidth. Variations using different values of the vertical U-slot lengths have been investigated. In all those variations, impedance bandwidth in the range of 26–30% is achieved in the 950 MHz frequency band, which is 5% higher when compared with narrow U-slot designs. Furthermore, a pair of rectangular slot-cut design of modified U-slot cut antenna is presented, which yields further 5% increment in the bandwidth. Similar designs with circular patch are also proposed which yield more than 5% increase in the bandwidth. In addition to the bandwidth increment, the proposed designs yield nearly 20% reduction in the patch copper area. Proposed antennas yield a broadside radiation pattern with a peak gain of 9 dBi.

Modified Designs of U-slot Cut Microstrip Antennas for Wider Bandwidth