Related Experiment Video
Updated: May 30, 2025
00:07
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
8.4K
A thin, wideband transmissive cross polarization converter
Negin Pouyanfar1, Javad Nourinia2, Changiz Ghobadi3
1Department of Electrical Engineering, Urmia University, Urmia, 5756151818, Iran. negin.pouyanfar@gmail.com.
Scientific Reports
|January 30, 2025
Summary
This study introduces a compact, wideband linear polarization converter that efficiently transforms electromagnetic waves. The device achieves high polarization conversion ratios across a broad frequency range, validated by simulations and experiments.
Area of Science:
- Electromagnetics and Metamaterials
- Microwave Engineering
Background:
- Linear polarization conversion is crucial for various electromagnetic applications.
- Existing converters often suffer from bulky structures or limited bandwidth.
Purpose of the Study:
- To design and demonstrate a novel, ultra-thin wideband linear polarization converter in transmission mode.
- To achieve near-unity conversion efficiency and a high Polarization Conversion Ratio (PCR).
Main Methods:
- A periodic array structure on a single-layer substrate with two metallic layers and six vias was proposed.
- Electromagnetic wave propagation and polarization conversion were analyzed.
- Surface current and electric charge distributions were studied to understand the conversion mechanism.
- Simulations were validated through experimental measurements.
Main Results:
- The proposed converter operates effectively in the 9.53-13.35 GHz frequency band (36% bandwidth).
- A Polarization Conversion Ratio (PCR) exceeding 90% was achieved across the 8.89-14.21 GHz range.
- Excellent agreement was observed between simulated and measured results.
Conclusions:
- The developed polarization converter is highly efficient and operates over a wide bandwidth.
- The compact and thin design makes it suitable for integration into various electromagnetic systems.
- The study confirms the effectiveness of the proposed structure for polarization conversion applications.
More Related Videos
Related Concept Videos
01:22Bipolar Junction Transistor
501
Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational...
501
01:16Biasing of P-N Junction
406
The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
406
01:31Dielectric Polarization in a Capacitor
4.6K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
4.6K
01:18Clipper Circuit
339
A clipper circuit is a fundamental wave-shaping device that harnesses the unique properties of diodes to alter and control waveform characteristics. This technology is widely used in electronic devices, especially in television and radar communication systems, where it enhances waveform modulation in both transmitters and receivers.
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
339
01:20Power Factor Correction
155
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
155