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Related Concept Videos

Parallel Resonance01:23

Parallel Resonance

515
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
515
Characteristics of Series Resonant Circuit01:24

Characteristics of Series Resonant Circuit

568
Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
568
Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

664
In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
664
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

6.7K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
6.7K
Series Resonance01:17

Series Resonance

743
The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
743
Design Example: Underdamped Parallel RLC Circuit01:17

Design Example: Underdamped Parallel RLC Circuit

622
Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...
622

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Updated: Jan 15, 2026

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
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Open complementary split-ring resonator-embedded tri-band rectangular monopole antenna with offset feed for next-gen

S Prasad Jones Christydass1, Devakirubakaran Samithas2, Praveen Kumar Balachandran3,4,5

  • 1School of Electronics Engineering, Vellore Institute of Technology, Chennai, Tamilnadu, 600127, India.

Scientific Reports
|October 13, 2025
PubMed
Summary
This summary is machine-generated.

A new compact tri-band antenna was developed for Wireless Local Area Network (WLAN), Wireless Avionics Intra-Communications (WAIC), and Worldwide Interoperability for Microwave Access (WiMAX). This antenna design achieves excellent performance for next-generation wireless systems.

Keywords:
MetamaterialOCSRROffset feedTri-bandWAICWLANWiMAX.

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Area of Science:

  • Electromagnetics and Antenna Engineering
  • Microwave Engineering

Background:

  • Modern wireless systems require compact, multiband antennas for diverse applications like WLAN, WAIC, and WiMAX.
  • Existing antenna designs often face limitations in size, bandwidth, and performance for these demanding applications.

Purpose of the Study:

  • To design and develop a compact tri-band rectangular monopole antenna.
  • To achieve enhanced multiband performance and impedance matching for WLAN, WAIC, and WiMAX frequencies.

Main Methods:

  • Integration of an Open Complementary Split-Ring Resonator (OCSRR) onto the radiating patch.
  • Utilizing an offset microstrip feed and ground plane reduction for performance enhancement.
  • Fabrication on an FR4 substrate and validation through simulation and measurement.

Main Results:

  • Achieved resonances at 3.16 GHz, 3.82 GHz, and 5.41 GHz.
  • Demonstrated significant impedance bandwidths of 180 MHz, 190 MHz, and 2750 MHz.
  • Obtained stable radiation patterns and peak gains up to 2.82 dBi with low reflection coefficients.

Conclusions:

  • The proposed antenna offers a low-profile, high-performance solution for multiband wireless applications.
  • The integration of OCSRR and offset feed effectively enhances antenna performance.
  • The design shows strong agreement between simulated and measured results, validating its suitability for next-generation wireless systems.