scholarly journals Observation of the perturbed eigenvalues of PT-symmetric LC resonator systems

2021 ◽  
Author(s):  
Bin-Bin Zhou ◽  
Li-Feng Wang ◽  
Lei Dong ◽  
Qing-An Huang
Keyword(s):  
Lc Resonator

Design of LC Resonator for Low Phase Noise Oscillators

2016 ◽  
Vol 63 (2) ◽  
pp. 169-180 ◽  
Author(s):  
Mohsen Moezzi ◽  
Mehrdad Sharif Bakhtiar
Keyword(s):  
Phase Noise ◽  
Lc Resonator ◽  
Low Phase Noise

Hermetically Sealed Inductor-Capacitor (LC) Resonator for Remote Pressure Monitoring

1998 ◽  
Vol 37 (Part 1, No. 12B) ◽  
pp. 7124-7128 ◽  
Author(s):  
Eun-Chul Park ◽  
Jun-Bo Yoon ◽  
Euisik Yoon
Keyword(s):  
Pressure Monitoring ◽  
Lc Resonator

Microwire Magneto-Resonance Characteristics in a Magnetic LC-Resonator Device

2008 ◽  
Vol 53 (3) ◽  
pp. 1438-1441
Author(s):  
Anh-Tuan Le ◽  
Quang Hoa Nguyen ◽  
Seong Cho Yu ◽  
Heebok Lee
Keyword(s):  
Lc Resonator

scholarly journals Microwave Differential Frequency Splitting Sensor Using Magnetic-LC Resonators

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1066 ◽  
Author(s):  
Amir Ebrahimi ◽  
Grzegorz Beziuk ◽  
James Scott ◽  
Kamran Ghorbani
Keyword(s):  
Dielectric Properties ◽  
Transmission Line ◽  
Reference Sample ◽  
Solid Materials ◽  
Microstrip Transmission Line ◽  
Frequency Splitting ◽  
Metallic Wall ◽  
Lc Resonator ◽  
Lc Resonators

A differential microwave permittivity sensor and comparator is designed using a microstrip transmission line loaded with a magnetic-LC resonator. The microstrip transmission line is aligned with the electric wall of the resonator. The sensor shows a single transmission zero, when it is unloaded or loaded symmetrically on both halves. A second notch appears in the transmission response by asymmetrical dielectric loading on the two halves of the device. The frequency splitting is used to characterize the dielectric properties of the samples under test. The sensitivity of the sensor is enhanced by removing the mutual coupling between the two halves of the magnetic-LC resonator using a metallic wall. The sensors’ operation principle is explained through a circuit model analysis. A prototype of the designed sensor is fabricated and measurements are used for validation of the sensing concept. The sensor can be used for determination of the dielectric properties in solid materials or detecting defects and impurities in solid materials through a comparative measurement with a reference sample.

Compact Triple Band Metamaterial Antenna Based on Modified Electric-field Coupled-LC Resonator

2014 ◽  
Vol 70 (1) ◽  
Author(s):  
B. D. Bala ◽  
M. K. A. Rahim ◽  
N. A. Murad ◽  
M. H. Mokhtar
Keyword(s):  
Electric Field ◽  
Magnetic Moments ◽  
Capacitive Coupling ◽  
Structural Modifications ◽  
Unit Cell Size ◽  
Metamaterial Antenna ◽  
Resonance Frequencies ◽  
Lc Resonator ◽  
Strip Lines ◽  
Triple Band

In this paper, a compact triple band metamaterial antenna based on modified electric-field coupled (ELC) resonator is presented. The modification to the conventional ELC is achieved by the use of strip lines to enhance the capacitive coupling of the capacitive gaps and a stub printed at the back of the resonator. The unit cell’s macroscopic parameters were not affected by the structural modifications as the electric moment dominates the magnetic moments in the ELC response. By employing this structure, three resonance frequencies at 1.65 GHz, 3.5 GHz and 5.8 GHz are obtained. The overall size of the antenna is 40 mm × 45 mm (0.22λo × 0.24λo) with the unit cell size of 12 mm × 11 mm (0.066λo × 0.060λo) at 1.65 GHz. The peak gain of 2.10 dBi and radiation efficiency of 97% is obtained at 5.8 GHz. The proposed antenna has advantages of being compact, small and suitable for WiMAX (3.5 GHz) and WLAN (5.8 GHz) applications. The simulated and measured return losses and the radiation patterns are presented and compared.  

Parametric Investigation and Analysis of an Electric-LC Resonator by Using LC Circuit Model

2020 ◽  
Vol 35 (10) ◽  
pp. 1113-1118
Author(s):  
Han Xiong ◽  
Xiu-Ming Li
Keyword(s):  
Theoretical Calculations ◽  
Normal Incidence ◽  
Circuit Model ◽  
Critical Parameters ◽  
Left Hand ◽  
Resonance Frequencies ◽  
Lc Circuit ◽  
Lc Resonator ◽  
Specific Frequency ◽  
Lc Resonators

Electric-LC resonators (ELCs) metamaterials, as a kind of common structures, have been extensively investigated from microwave to terahertz frequencies. In this paper, we present a LC circuit model to analyze electric-LC resonator. With the reliable and closed formulas of the effective inductance and capacitance, the expressions of electric and magnetic resonance frequencies were obtained, which is suitable to discuss the resonance characteristic under the normal incidence case. Meanwhile, the mutual relationships among the permittivity, permeability, refractive index, and structure parameters can be explored by using the obtained expressions. Numerical simulations and theoretical calculations reveal that the width and length of the gaps are some of the critical parameters determining the resonator frequency of the example metamaterial. This study provides valuable information for designing the desired left-hand metamaterial at some specific frequency points.

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