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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...

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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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Spoof plasmon radiation using sinusoidally modulated corrugated reactance surfaces.

Anastasios H Panaretos, Douglas H Werner

|February 25, 2016

Summary

This summary is machine-generated.

Researchers developed a method to create leaky wave antennas that convert spoof plasmons (surface waves on corrugated metals) into radiating modes. This enables efficient microwave and THz signal transmission.

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Area of Science:

Electromagnetics
Surface Wave Physics
Antenna Theory

Background:

Spoof plasmons are surface waves on corrugated metallic surfaces, analogous to optical surface plasmon polaritons.
These surface waves operate in the microwave and terahertz (THz) frequency ranges.
Leaky wave antennas are crucial for efficient signal radiation.

Purpose of the Study:

To theoretically investigate the creation of leaky wave antennas.
To enable the conversion of spoof plasmons into radiating modes.
To develop a design methodology for engineering corrugated surfaces with specific reactance profiles.

Main Methods:

Theoretical investigation of leaky wave antenna feasibility.
Engineering corrugated surfaces to achieve a sinusoidally modulated reactance profile.
Developing a methodology to map reactance variation to groove depth variation.
Examining both planar and cylindrical corrugated surfaces.

Main Results:

Demonstrated the feasibility of creating leaky wave antennas from corrugated surfaces.
Showcased efficient coupling of spoof plasmons to radiating modes via non-uniform periodic reactance surfaces.
Numerically validated the conversion efficiency for both planar and cylindrical structures.

Conclusions:

Sinusoidally modulated leaky wave structures can efficiently convert guided spoof plasmons to radiating modes.
The proposed design methodology provides a realistic approach for fabricating such antennas.
This research advances the development of efficient microwave and THz antennas.