Introduction: The Georgia Tech Venus Radiative Transfer Model (VRTM) can be used to model the effects of the abundances of microwave and millimeter wave absorbing constituents on the emission from the Venus troposphere and mesosphere. The primary components of the Venus atmosphere are CO2 and N2, but variation in concentration of sulfur compounds, specifically gaseous H2SO4 and SO2, result in c...

Spaceborne millimeter-wave radiometric measurements offer the potential to observe snowfall at high latitudes. A spaceborne W-band cloud radar on CloudSat has been able to observe snow. There is thus a need for a relatively simple representation of millimeter-wave scattering parameters of snow that can be incorporated into algorithms to retrieve snowfall from remotely sensed millimeter-wave bri...

Millimeter-wave detected, millimeter-wave optical double resonance (mmODR) spectroscopy is a powerful tool for the analysis of dense, complicated regions in the optical spectra of small molecules. The availability of cavity-free microwave and millimeter wave spectrometers with frequency-agile generation and detection of radiation (required for chirped-pulse Fourier-transform spectroscopy) opens...

Given the high throughput requirement for 5G, merging millimeter wave technologies and multi-user MIMO seems a very promising strategy. As hardware limitations impede to realize a full digital architecture, hybrid MIMO architectures using both analog and digital precoding are considered a feasible solution to implement multi-user MIMO at millimeter wave. Real channel propagation and hardware no...

The market for millimeter-wave power amplifiers includes applications in military, commercial and consumer sectors. The armed forces use the devices in transmitters for the detection of small targets and target imaging, in radar equipment, communications and smart weapons systems. In the commercial sector the amplifiers are widely used in high-data-rate communication systems such as digital rad...

Short-range multiple-input and multiple-output (SRMIMO) has attracted much attention, because the technique makes it possible to raise channel capacity to several hundred Gbit/s by utilizing the millimeter-wave band (e.g., 60 GHz band). Although the opposed transceiving antennas are assumed to be accurately positioned in previous studies regarding SR-MIMO, a very important issue is to evaluate ...

Diversity and Equalization for MultiGigabit Millimeter Wave Communications over a Sparse Multipath Channel

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...

Deep-scaled CMOS technologies have provided ultra-high speed devices and enabled the possibility to achieve integrated millimeter wave and sub-millimeter wave systemon-a-chip (SoC). However, the drawbacks and constraints of deep-scaled technologies require not only creative circuit design ideas but also accurate active device models and optimum physical design. The paper presents a systematic d...