Novel dual‐mode square‐loop resonators using Hilbert perturbation for simultaneous size reduction and mode splitting

Abstract

geometric and physical parameters of novel antenna design has been carried out. A calculated value of the space resolving capacity of the optimized antenna-probe has been confirmed experimentally as a consequence of the analysis of radio-pictures of two thin dielectric threads imbedded in the polystyrene matrix. A resolving capacity enhancement of the novel probe in comparison with the well-known analogues, as well as a decrease of distortions introduced by this probe in the testing near-field seems to be very attractive for investigations of amplitude, phase, and polarization characteristics of EM near-fields. Some advantages of the novel antenna-probe design have been demonstrated by model experiments on the interaction of EM waves with artificial dielectrics in a short part of millimeter wavelength range. A permittivity of the local inhomogeneity that differs from the matrix permittivity in 0.2 has been determined. There is every reason to believe that the developed approach will be also effective for the similar problem solutions in the microwave range. 2. S. Bakhtiari, S.

DMSLR-Based Bandpass Filter With Hilbert-Curve Perturbation for Multiple Resonances and Wideband Applications

“…Geometrically, a ring resonator, double ring resonator, square patch, triangle patch and square-loop [3]- [12] were proposed for wideband BPFs. For dual-mode, square-loop resonators, a perturbation consisting of a straight stub or patch in the corner is usually used.…”

“…It clarifies the multiple resonances in [11]. Then an improved perturbation applied to the DMSLR structure, designated as DMSLR based BPF with Hilbert-curve perturbation [12], is introduced.…”

Miniaturized Dual-Mode Resonators With Improved Double Square Loop and Inter-Digital Couple for Wlan Dual-Bands

“…Miniaturizing the structure with shunt capacitance perturbation [5], with meander line [6][7][8][9], with cross-strip [10][11][12], with cross-slot in ground plane [13], with radial-slot ground plane [14], with open-loop resonator [15], with Hilbert-curve [17], and with multi-layer [21] was proposed. Generally, the miniaturization has been widely applied to compact band-pass filter design [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. The dual-mode meander line configuration is an interesting topic for research and development [6][7][8][9].…”

Dual‐mode ring resonators with inductive ω‐shaped perturbations for miniaturizations and dual‐bands

“…On the other hand, the DMRR were modified for enhancing the performance with series capacitance perturbation. Miniaturizing the structure with shunt capacitance perturbation [5], meander line [6 -8], cross-strip [9,10], cross-slot in ground plane [11], radial-slot ground plane [6], open-loop resonator [12], Hilbert-curve [13], and slot-line in patch [14,15] were proposed. Generally, the miniaturization is widely applied for compact bandpass filter design [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”