Inductive loaded compact monopole antenna for ultra‐wideband applications

Abstract

An effective method to design an ultra-wideband antenna using a vertical narrow strip element is described. The proposed low profile antenna has good radiation characteristics such as polarisation purity, omnidirectional radiation pattern and good efficiency over the entire band of operation, which are the most desirable characteristics required for a wireless system to operate in the present high interference environment. The designed antenna has a measured return loss of below −10 dB and low cross polarised uniform omnidirectional pattern measured in anechoic chamber for the frequency range of 2.85 to 10.6 GHz.

Development of inductive‐loaded ultra‐wideband monopole antennas from stepped‐impedance resonators

“…An inductor added in series between the radiating strips provides another degree of freedom to control the span of distribution of the resonant frequencies. It is reported that the series inductors merge the distributed multiple resonance bands into a single band [8]. The designed layout of the two‐strip inductive‐loaded stepped‐impedance printed monopole antenna is shown in Fig.…”

“…Monopole antennas with inductive loads are reported to have increased resonance bandwidths [5–7]. Recently, it has also been validated that the use of lumped inductors combine the multiple bands of resonance of the printed stepped‐impedance monopoles into a single resonance band encompassing the entire UWB range of frequencies [8, 9].…”

Metamaterial-inspired electrically small antenna for microwave applications

“…Numerous miniaturization techniques have been developed and successfully implemented by several researchers for different types of antennas. [6][7][8][9][10][11][12] For dipole and monopole antennas, some of the techniques include material loading, 6 impedance loading, 7 folding shape like a fractal and spiral meander lines. 8,9 For patch antennas, the techniques consist of shorting plates or posts, 10,11 creating different types of slots 12 and loading with high permittivity dielectric substrate.…”

A half cut design of low profile UWB planar antenna for DCS/PCS/WLAN applications

“…In the past decade, printed monopole/UWB antennas in planar design have received much attention among the wireless industry. It is because of their high data rate communication in short range, with low power signals . Moreover, these UWB antennas are showing their potential applications in ultrawideband radios, internet of things (IOT) devices, Bluetooth, WLAN/WiMAX, and other UWB communication systems .…”