A high BDR microstrip‐line fed antenna with multiple asymmetric elliptical wide‐slots for wideband applications

Abstract

In this study, a novel printed wide‐slot antenna for wideband applications is presented. The designed antenna consists of four merged elliptical wide‐slots (EWSs) of different dimensions in the ground plane. An open‐ended microstrip line having a characteristic impedance of 50 Ω is used to excite the EWS. Each EWS corresponds to the different frequency of operation and hence when merged together give a wideband response. The fabricated prototype of the designed antenna shows the 10 dB return loss bandwidth (RLBW) of about 157.72% ranging from 2.21 to 18.7 GHz. The peak gain varies from 0.1 to 6.5 dB within the RLBW is reported. An almost constant group delay, low variation (<−40 dB) in the transfer function S21 and linear phase variation for both side by side and face to face orientations of the designed antenna shows its applicability for wideband applications. The electrical dimensions of about 0.176λ L × 0.162λ L (where λ L is the lowest operating wavelength) give rise to the bandwidth dimension ratio of about 5505 which is highest among the antenna structures reported in the literature. The measured results are found in good concordance with the results obtained from numerical simulations.

Simple wideband extended aperture antenna-inspired circular patch for V-band communication systems

“…The insertion of the elliptical patch increased the effective length of the antenna, which significantly improves the impedance matching over a wide band spectrum. The central frequency (F C ) of an elliptical patch can be estimated using the following expression (4) provided in [29]:…”

On the Design and Analysis of Compact Super-Wideband Quad Element Chiral MIMO Array for High Data Rate Applications

“…The CDF was computed for various frequencies with different Signal to Noise Ratio (SNR) values using Equation ( 9) and plotted in Figure 12. Along with the MIMO performance metrics, the BDR was taken into account in order to ensure the compactness of the planar antenna [54]. It gave information about how much of the electrical unit area was utilized for producing each bandwidth percentage: BDR = Bandwidth(%)…”