A Compact UWB Microstrip Antenna with Modified Ground Plane for Bandwidth Enhancement

Abstract

This paper presents a bandwidth enhancing technique using a modified ground plane with diagonal edges, L-shaped slot and parasitic patches with main patch for the design of compact antennas. The proposed low-cost, compact-size rectangular patch antenna on 4.7 cm × 3.6 cm printed circuit board (FR-4) is designed and validated through simulations and experiments. Results show that the ground plane with Lshaped slot in presence of the diagonal cuts at the top corners and the rectangular parasitic patches can increase the bandwidth. Return losses of −23.6 dB and −29.7 dB for the first and second resonant frequencies, respectively, can be achieved when the depth of the diagonal cut is 3 mm, the dimension of each rectangular parasitic patch is 10 mm×3.5 mm, and the L-shaped slot size is 7.5 mm ×2.5mm, providing a 41.27% wider bandwidth than Federal Communication Commission's(FCC) standard. General TermsDesigning of Microstrip Antenna.

Enhanced UWB Printed Monopole Antenna Based on Ground Plane Modifications

“…3) Adding two identical rectangular slots: this technique is used in order to get rid of or moderate the surface current reflection, thus adjusting the antenna impedance and reducing the return loss [17]. Parametric analysis is carried out on its length, width and location.…”

A new patch antenna for ultra wide band communication applications

“…In communication systems, there are constantly demand to increase the rate of data transfer [1,2]. The increase the rate of transfer information can be achieved by either increase SNR or bandwidth according to Shanon-Nyquist (1) [3].…”

Finger-shaped antenna design for ultra-wideband applications

“…To get freedom for receiver and transmitter positioning, the antenna of omni-directional radiation pattern need to be designed for multi-users in different locations [5]. A compactsize rectangular patch antenna was printed by [6] on 470mm x 360 mm dimensions of FR-4 substrate material to great two resonant frequencies at -23.6 dB and -29.7 dB. A single-band antenna was converted by [7,15] into a dual-band antenna to be used for wireless local area networks (WLAN) as an improving the wideband performance in [8,16] of the fabricated triangular patch by photolithography technique.…”