Design and experiment of miniaturized small resonant aperture using modified ridge structure

Abstract

A design method for a miniaturized small resonant aperture by modifying a ridge structure is presented, and its performance is verified experimentally. The proposed miniaturized aperture was designed by deforming the straight ridge structure of an H-shaped aperture with a two-step ridge of different lengths and widths, which resembles the capacitor symbol shape of the electric circuit. Experiment results show that the resonant frequency of the proposed aperture decreases from 5.06 GHz to 2.565 GHz (49.3%) compared to the conventional H-shaped aperture. Its transmission cross section increased by 3.78 times, and the aperture length-to-wavelength ratio is reduced to 0.09.

Hygrothermal ageing characterisation of epoxy resin based on transmission characteristics of microwave resonator with interdigital‐capacitor‐shaped defected ground structure

“…Compared with the traditional resonators such as double-bell-shaped defected ground structure (DGS), the resonator can be used more flexibly due to the small size. The transmission cross section is increased, which improves the transmission efficiency [17].…”

High-Sensitivity Microwave Sensor Based on an Interdigital-Capacitor-Shaped Defected Ground Structure for Permittivity Characterization

“…The dimensions of the microstrip line and ground plane were the same as those for the DR-CSRR. The proposed IDCS-DGS was designed by modifying the straight ridge structure of an H-shaped aperture into an interdigital-capacitor-shaped ridge [31], and its dimensions for S 21 resonance at 1.5 GHz were chosen as t 4 = 0.5 mm, t 5 = 2 mm, g 4 = 0.5 mm, g 5 = 2 mm, and d 4 = 13.63 mm. The geometric parameters of the proposed sensor were optimized for higher sensitivity through a parametric study.…”

Resonance Transmission of Dual Plates with Narrow Small Slots due to Two Parallel Wires for Frequencies around 2 GHz

“…Recent studies have focused on the reduction of electromagnetic penetration through narrow slots in a conducting screen, and electric shielding effectiveness has been considered for a dual plate with narrow slots [12][13][14][15][16][17][18]. The resonant behavior of a small aperture backed by a conducting body has been reported [19], and enhanced resonance transmission has been investigated on shaped apertures, narrow small slots, and small square slots using two parallel wires (acting as a reactance) loaded in the slot [20][21][22][23][24][25][26].…”