Gallium Phosphide IMPATT Sources for Millimeter-Wave Applications

Highly Selective Lowpass Filter with Wide Stopband in Suspended Stripline Technology for Millimeter-wave Diplexer Applications

This paper presents a low loss and high selective lowpass filter which is implemented using suspended stripline (SSL) technology. The proposed structure is comprised of a 13th order generalized Chebyshev lowpass filter which enjoys integrated waveguide-to-SSL transitions. This filter is designed and fabricated to be used as lowpass channel of a U-band diplexer employed in frontend of a U-band d...

Gallium self-diffusion in gallium phosphide

Ga self-diffusion in gallium phosphide ~GaP! is measured directly in isotopically controlled GaP heterostructures. Secondary ion mass spectroscopy ~SIMS! is used to monitor intermixing of Ga and Ga between isotopically pure GaP epilayers which are grown by molecular beam epitaxy ~MBE! on GaP substrates. The Ga self-diffusion coefficient in undoped GaP is determined to be D52.0 cm s exp(24.5 eV/...

Millimeter and Submillimeter Wave Applications

Many applications of millimeter and submillimeter wave systems have been suggested in the literature but, in general, they have not yet beea employed in practice to any significant degree. This report discusses the advantages and limitations of this frequency region and reviews the potential applications under the categories of radar, communications, radiometry and instrumentation. One of the p...

RDRA Array System for Millimeter-Wave Applications

Lobby 1 Chair: Tudor Palade (Technical University of Cluj-Napoca, Romania) , Stephan Stanko (FGAN-FHR, Germany) 2.1 SIWSeries Fed RDRA Array System for Millimeter-Wave Applications Wael Abdel Wahab (University of Waterloo, Canada); Safieddin Safavi-Naeini (University of Waterloo, Canada); Dan. Busuioc (University of Waterloo, Canada) A simple, low cost novel series feeding scheme to rectangular...

Printed Wideband Antenna for Millimeter Wave Applications

Multi-octave metamaterial reflective half-wave plate for millimeter and sub-millimeter wave applications.

The quasi-optical modulation of linear polarization at millimeter and sub-millimeter wavelengths can be achieved by using rotating half-wave plates (HWPs) in front of polarization-sensitive detectors. Large operational bandwidths are required when the same device is meant to work simultaneously across different frequency bands. Previous realizations of half-wave plates, ranging from birefringen...