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Related Concept Videos

Parallel Resonance01:23

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:
Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

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...
Passive Filters01:27

Passive Filters

Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff frequency...

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Related Experiment Video

Updated: Jun 12, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

A Low-Profile Self-Stealth Programmable Metasurface with In-Band and Out-of-Band RCS Reduction.

Yajie Mu1, Jiaqi Han1, Lihao Zhu1

  • 1Key Laboratory of High-Speed Circuit Design and EMC of Ministry of Education, School of Electronic Engineering, Xidian University, Xi'an 710071, China.

Research (Washington, D.C.)
|June 11, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a low-profile programmable metasurface for radar cross-section reduction (RCSR). The self-stealth design achieves in-band and out-of-band RCSR without extra components, enabling beam steering and communication capabilities.

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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Related Experiment Videos

Last Updated: Jun 12, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Area of Science:

  • Electromagnetics and Metamaterials
  • Antenna and Radar Technology

Background:

  • Programmable metasurfaces offer dynamic beam steering and radar cross-section reduction (RCSR).
  • Existing metasurfaces for RCSR often lack beam scanning capabilities or require additional stealth components.
  • Achieving both in-band and out-of-band stealth is crucial for practical applications.

Purpose of the Study:

  • To present a low-profile, self-stealth programmable metasurface.
  • To achieve in-band and out-of-band RCSR intrinsically without additional structures.
  • To enable dynamic beam steering and potential communication functions.

Main Methods:

  • A meta-atom design incorporating a positive-intrinsic-negative (PIN) diode for 1-bit phase modulation of x-polarization at the in-band frequency (f0).
  • A bridge design for y-polarization enabling 1-bit phase adjustment, with separate control for x- and y-polarizations.
  • Inclusion of cross-shaped dumbbells and branch structures in top and middle layers for out-of-band (high and low frequencies) RCSR.

Main Results:

  • The meta-atom demonstrates phase modulation across five frequency bands (fl2 < fl1 < f0 < fh2 < fh1).
  • The metasurface achieves a low profile height of 0.065λ, facilitating conformal design.
  • A 12x12 prototype confirmed significant RCSR across the five bands and demonstrated in-band radiation for communication.

Conclusions:

  • The developed self-stealth programmable metasurface effectively reduces radar cross-section both in-band and out-of-band.
  • The low-profile design and multi-band stealth capabilities are advantageous for advanced radar and communication systems.
  • This work contributes to the development of versatile programmable metasurface technology.