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Characteristics of Series Resonant Circuit

Characteristics of Series Resonant Circuit

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:

Parallel Resonance

Parallel Resonance

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:

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Related Experiment Video

Updated: Jul 6, 2026

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

Plasmonic Arrays Resonating at D-Band Communication Frequencies.

Ruxue Wei¹, Meng Liu¹, Soren Petersen¹

¹School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078, USA.

Materials (Basel, Switzerland)

|December 31, 2025

Summary

This summary is machine-generated.

Metallic metasurfaces exhibit unique D-band resonance behavior influenced by structural geometry and polarization. These subwavelength metallic arrays offer insights for developing advanced terahertz communication components.

Keywords:

D-band extraordinary transmission plasmonic terahertz time-domain spectroscopy

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Area of Science:

Metamaterials and Nanophotonics
Terahertz (THz) Technology
Electromagnetics

Background:

Metasurfaces offer unique electromagnetic properties at subwavelength scales.
Terahertz (THz) frequencies present opportunities for advanced communication systems.
Understanding resonance behavior is crucial for metasurface design.

Purpose of the Study:

To investigate the impact of subwavelength structural geometries and polarization on D-band metasurface resonance.
To analyze the influence of experimental setup on spectral features.
To explore the potential of metasurfaces for next-generation terahertz communications.

Main Methods:

Systematic experimental studies of metallic metasurfaces at D-band frequencies.
Terahertz time-domain spectroscopy (THz-TDS) with analysis of receiver antenna design.
Numerical simulations to reveal resonance characteristics and field enhancements.

Main Results:

Extraordinary amplitude transmission in the D-band is highly dependent on array dimensions and polarization.
Metasurfaces show significant enhancements in surface electric fields.
Strong dipolar modes are effectively excited, leading to enhanced resonance response.

Conclusions:

Subwavelength metallic arrays demonstrate extraordinary transmission capabilities.
Metasurface design influences resonance and transmission significantly.
Results provide insights for developing compact, low-loss, tunable THz components for future communications.