Design of Two Compact Wideband Monopoles Through Loading with Linear Approximated Lumped Components
Year: 2024
Type: article
Abstract: In this paper, two ultra-wideband monopoles in a colinear structure are presented for application in remote terrestrial communication systems. The antennas consist of a loaded monopole with a hat and an elevated loaded monopole located in the upper position. All lumped loads are modeled as linear frequency-dependent components to approximate the practical component property for achieving ultra-wideband characteristics, since the constant value property of a component is only present in a relatively narrow band. The antennas are simulated by the method of moments (MoM) with asymptotic waveform evaluation (AWE) to speed up frequency sweep across a wide bandwidth. For proper simulation with the AWE process, the parallel RLC load with linear frequency-dependent components is modeled in a corresponding impedance function. With the optimized load parameters, one antenna covers 30-750 MHz with a VSWR < 3.5 and the other one covers 800 MHz-3000 MHz with a VSWR < 2.5, which are promising results for terrestrial omnidirectional applications.
Source: Micromachines
DOI: 10.3390/mi15121477
Authors: Jiansen Ma, Weiping Cao, Xinhua Yu
Institution: Guilin University of Electronic Technology
Language: English
Topic: Antenna Design and Analysis
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,955
OpenAlex ID: W4405196219