Wisconsin Alumni Research Foundation

Technology

Improved Mobile User Localization

The rapid proliferation of wireless devices has caused a surge in data rates. Higher frequencies including millimeter wave frequencies (30-300 GHz) are being explored to address the spectrum crunch. ...
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Akbar Sayeed | P140393US01

Technology

New MIMO Transceiver Cuts Costs, Complexity

In a multiple-input, multiple-output (MIMO) system, multiple antennas are used at both the transmitter and receiver to improve communication performance. MIMO systems are key to high capacity communic...
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Akbar Sayeed, John Brady | P150112US01

Technology

Wideband Transceiver for Antenna Array

Wideband high-dimensional antenna arrays are expected to play a key role in future wireless systems. Due to narrow bandwidths, phased array/beamforming methods are the natural choice when it comes to ...
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Akbar Sayeed, John Brady | P150113US01

Technology

More Efficient Semiconductor Lasers

Quantum cascade lasers (QCLs) are semiconductor lasers that provide light in the mid- and far-infrared wavelength ranges. They are designed so that the generated light is transverse-magnetic (TM) pola...
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Luke Mawst, Dan Botez, Thomas Earles, Jeremy Kirch, Christopher Sigler | P140047US01

Technology

Enhanced Traveling Wave Tube

A traveling wave tube (TWT) is a vacuum electronic device that acts as a microwave amplifier capable of providing high gain and high output power. TWTs are used in many wireless devices like radar sys...
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Nader Behdad, Arash Rashidi Tarhani | P140188US01

Technology

Low-Profile, Ultrawide Band Antenna

Monopole antennas are a type of radio antenna consisting of a straight, rod-shaped conductor often mounted perpendicularly over a conductive surface (a ‘ground plane’) such as the earth. T...
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Nader Behdad, Seyed Mohamad Amin Momeni Hasan Abadi | P130215US01

Technology

Managing Virtual Memory to Reduce Latency

To execute a computer program, a processor can access memory to read or write data. The accessed data may be identified by a unique physical address. Modern systems are able to hide the physical addre...
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Mark Hill, Michael Swift, Arkaprava Basu | P130081US01

Technology

LEAP - Improved Data Lookup for High-Speed Routers

Networks allow data exchange between linked computers. Data messages are divided into packets, which are able to navigate complex and changing networks. A router, or switch, reads packet addresses and...
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Karthikeyan Sankaralingam, Eric Harris, Samuel Wasmundt | P120239US01

Technology

An Improved Method for Analyzing Wireless Broadcasts

In wireless telecommunications, signals are transmitted and received over transmission channels within a limited range of frequencies, typically between 0.7 GHz to 6 GHz for domestic applications. Due...
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Akbar Sayeed, Robert Nowak, Waheed Bajwa, Jarvis Haupt | P09135US

Technology

Method for Efficient On-Demand Data Streaming

Many different types of media can be obtained from websites (i.e., online), including music, television shows and distance education programs. When delivered over the Internet, these types of media ar...
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Mary Vernon, Derek Eager, John Zahorjan | P00018US

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