A new approach to manipulating the duration and frequency of microwave pulses using magnetized plasmas is demonstrated. The plasma accomplishes two functions: (i) slowing down and spatially compressing the incident wave, and (ii) modifying the propagation properties (group velocity and frequency) of the wave in the plasma during a uniform in space adiabatic in time variation of the magnitude an...

In this Bachelor Thesis the design of a horn antenna to measure the Cosmic Microwave Background (CMB) at 11 GHz is discussed. The theory underlying the design and di↵erent horn antenna types are treated. From this the optimal horn design is chosen; the Pickett-Potter horn. Then the design is optimized with a bandwidth of 1 GHz using CST Microwave Studio. Having obtained the final design, the Pi...

Refraction at a smooth interface is accompanied by momentum transfer normal to the interface. We show that corrugating an initially smooth, totally reflecting, non-metallic interface provides a momentum kick parallel to the surface, which can be used to refract light negatively or positively. This new mechanism of negative refraction is demonstrated by visible light and microwave experiments on...

An electronic diode is a nonlinear semiconductor circuit component that allows conduction of electrical current in one direction only. A component with similar functionality for electromagnetic waves, an electromagnetic isolator, is based on the Faraday effect of rotation of the polarization state and is also a key component in optical and microwave systems. Here we demonstrate a chiral electro...

A novel nonparaxial technique based on Pade approximant for modeling ultra short optical pulses has been discussed and verified. The characterization of the technique shows excellent performance in terms of accuracy, efficiency, and stability where the tradiFigure 4 Variation of return loss with frequency for S-MP&SLGPMRMSA-OPMS when Ls1 14 mm. [Color figure can be viewed in the online issue, w...

We evaluated the dielectric permittivity and impedance characteristics of high dielectric constant polymer composite films. Such materials are being investigated by the electronic industry in response to the growing need for efficient integrated powerground de-coupling capacitance in microwave circuits and fast switching devices. In order to extend the dielectric measurements to the microwave r...

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Undulators as the sources of high-brilliance synchrotron radiation are widespread interest in new generations light and free-electron lasers. Microwave propagation a plasma-filled elliptical waveguide can be studied standard short-period undulator. This structure lucrative insertion device installed storage ring third- fourth-generation to produce high-energy radiation. In this article, transve...