scholarly journals Analysis of mutual acoustic coupling in CMUT arrays using an accurate lumped element nonlinear equivalent circuit model

2012 ◽  
Author(s):  
H.Kagan Oguz ◽  
Abdullah Atalar ◽  
Hayrettin Koymen
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Acoustic Coupling ◽  
Lumped Element

Resonant Characteristics of Split Ring Resonator and Unit Cell for Periodic Metamaterial Devices

2021 ◽  
Vol 35 (11) ◽  
pp. 1378-1379
Author(s):  
Brinta Chowdhury ◽  
Thisara Walpita ◽  
B. Yang ◽  
A. Eroglu
Keyword(s):  
Equivalent Circuit ◽  
Ring Resonator ◽  
Equivalent Circuit Model ◽  
Split Ring Resonator ◽  
Circuit Model ◽  
Split Ring ◽  
Analytical Formulation ◽  
Lumped Element ◽  
Ring Structures ◽  
Simulation Results

The resonant characteristics of single split ring resonator-based metamaterial devices with single gap are presented using the analytical formulation developed for the lumped element equivalent circuit model. The characteristics of the metamaterial resonators have been investigated for different ring sizes, gap widths and substrate permittivity. Equivalent circuit model is developed for two ring structures. The analytical, and simulation results are compared and verified. The prototype has been then built and measured. It has been observed that all the results agree. The results presented in this paper can be used to develop devices at the THz range that can operate as sensors, antennas or tuning elements.

Equivalent circuit model of a coaxial excited microstrip‐fed quasi‐lumped element resonator antenna array

2015 ◽  
Vol 9 (5) ◽  
pp. 446-453 ◽  
Author(s):  
Seyi Stephen Olokede ◽  
Clement Anowe Adamariko ◽  
Yazeed Mohammed Qasaymeh
Keyword(s):  
Antenna Array ◽  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Lumped Element

Multi-band Monopole Antennas Loaded with Metamaterial TL

Frequenz ◽  
2015 ◽  
Vol 69 (5-6) ◽  
Author(s):  
Zhi-jie Song ◽  
Jian-gang Liang
Keyword(s):  
Transmission Line ◽  
Equivalent Circuit ◽  
Impedance Matching ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Radiation Patterns ◽  
Archimedean Spiral ◽  
Lumped Element ◽  
Monopole Antennas ◽  
Better Than

AbstractA novel metamaterial transmission line (TL) by loading complementary single Archimedean spiral resonator pair (CSASRP) is investigated and used to design a set of multi-frequency monopole antennas. The particularity is that the CSASRP which features dual-shunt branches in the equivalent circuit model is directly etched in the signal strip. By smartly controlling the element parameters, three antennas are designed and one of them covering UMTS and Bluetooth bands is fabricated and measured. The antenna exhibits impedance matching better than –10 dB and normal monopolar radiation patterns at working bands of 1.9–2.22 and 2.38–2.5 GHz. Moreover, the loaded element also contributes to the radiation, which is the major advantage of this prescription over previous lumped-element loadings. The proposed antenna is also more compact over previous designs.

scholarly journals Broadband Lumped-Element Parameter Extraction Method of Two-Port 3D MEMS In-Chip Solenoid Inductors Based on a Physics-Based Equivalent Circuit Model

Micromachines ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 836
Author(s):  
Jiamian Sun ◽  
Haiwang Li ◽  
Sifan Wu ◽  
Tiantong Xu ◽  
Hanqing Li ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Circuit Design ◽  
Extraction Method ◽  
Unit Area ◽  
Equivalent Circuit Model ◽  
Parameter Extraction ◽  
Circuit Model ◽  
Proximity Effects ◽  
Design System ◽  
Lumped Element

Integrated 2D spiral inductors possess low inductance per unit area, which limits their application range. However, the state of investigation into the lumped-element parameter extraction method for integrated 3D in-chip multi-turn solenoid inductors, which possess higher inductance per unit area, is inadequate. This type of inductor can thus not be incorporated into fast computer-aided design (CAD)-assisted circuit design. In this study, we propose a broadband two-port physics-based equivalent circuit model for 3D microelectromechanical system (MEMS) in-chip solenoid inductors that are embedded in silicon substrates. The circuit model was composed of lumped elements with specific physical meanings and incorporated complicated parasitics resulting from eddy currents, skin effects, and proximity effects. Based on this model, we presented a lumped-element parameter extraction method using the electronic design automation software package, Agilent Advanced Design System (ADS). This method proved to be consistent with the results of two-port testing at low to self-resonant frequencies and could thus be used in CAD-assisted circuit design. The lumped element value variations were analyzed based on the physical meaning of the elements with respect to variations in structures and the substrate resistivity of inductors. This provided a novel perspective in terms of the design of integrated in-chip solenoid inductors.

scholarly journals Lumped Elements and Its Existence in Quasi Lumped Element Resonator Antenna

2019 ◽  
pp. 1-9
Author(s):  
T. M. Bello ◽  
A. M. S. Tekanyi ◽  
A. D. Usman
Keyword(s):  
Resonance Frequency ◽  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Building Blocks ◽  
Circuit Model ◽  
Passive Components ◽  
Interdigital Capacitor ◽  
Lumped Element ◽  
Lumped Elements ◽  
To Come

In this paper, the Quasi Lumped Element Resonator Antenna is reviewed. It is composed of Lumped elements. Lumped Elements are passive components whose size across any dimensions should be small to make it a lumped element. The various researches that have been done to come about the various types of basic building blocks of the lumped element are staged in this write up. This review is towards accomplishing the derivation of the component elements used in the design of the Quasi Lumped Element Resonator Antenna. These elements are the interdigital capacitor, inductor and pad capacitors. The pertinent formulae for determining each one of them were all expressed in this review. The formula for calculating the resonance frequency of the Quasi Lumped Element Resonator Antenna was expressed in this review. The equivalent circuit model for the lumped elements were all reviewed and presented. This review brings about how the lumped elements are involved in the design of the Quasi Lumped Element Resonator Antenna.

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