Under a current afwal contract, and under internal sponsorship, lnr communications, inc. has developed and demonstrated brassboard 20 w, 20 ghz patt solid state power amplifiers (sspa's) with a 1 ghz bandwidth and in both 4 and 8-way combinatorial configurations. thus, since all of the basic ehf… More

This project provides technology for 30 ghz solid-state power amplifiers (sspa) designed for future commercial and military communications satellites. this effort employs gaas impact avalanche transit time (impatt) diodes as the basis for study and development. based on the experience gained from… More

Under a previous afwal contract, and under internal sponsorship, lnr communications, inc. has developed for ultimate spaceborne downlink usage and demonstrated brassboard 10w and 20w, 20ghz impatt solid state power amplifiers (sspa's) with 1ghz bandwidth and in 4 and 8way combinatorial… More

Gallium arsenide (gaas) impatt diodes have generated more rf power and higher conversion efficiencies both in the pulsed and continuous wave operating mode and demonstrated better radiation hardening, than any other ehf solid state power generating device. historically, substantial difficulties have… More

A need exists for space qualified ehf low noise receiver front-ends operating at frequencies of 44 ghz and up. recent advances in the area of hemt device technology make it possible to develop a space qualifiable low noise amplifier with gain and noise figure performance approaching that previously… More

Gallium arsenide (gaas) impatt diodes are the primary candidates for use as the active element in 60 ghz solid state combinatorial (or active aperture) transmit power amplifiers for long range wideband intersatellite communication links. in this application a multiplicity of identical 60 ghz impatt… More

Present shipboard automated broad band electronic support measures (esm) systems have multi-target, automatic detection and display capabilities. because of the environmental signal density and the reduced time elements required by automated systems for self defense. esm receiver threshold… More

A phase 1 program is proposed to perform a design study to demonstrate the feasibility of realizing a low cost ka-band (30 ghz) reflection mode fet solid state power amplifier (sspa), exhibiting a minimum 16w rf output power over at least 1ghz operating bandwidth, for 30/20ghz satcom uplink… More

Spread spectrum and related low probability of intercept (lpi) radar and communications signals present an extreme challenge to intercept or esm receivers by virtue of their broad bandwidth, below-noiselevel spectral density, noise-like spectral shape, and unknown code, making it impossible for the… More

The evolution of advanced 30/20 ghz satcom systems for deployment in the late 1980's and early 1990's emphasizes the use of wideband predominantly digital traffic, servicingmany dispersed user ground terminals via a single sophisticated satellite, operated in frequency or time domain multiple access… More

An rf simulation system that can both test electronic support measure (esm) receiving systems and train esm operators would have many advantages. the equipment would have to produce multipe rf signals to test receiver front ends as well as simulate a radar threat environment to train the operators.… More

With the proliferation of radars that use rapidly varying transmitted pulse parameters to avoid detection and recognition, unintentional modulation on said pulses may become a primary received signal sort parameter, e.g. a mens of associating the intercepted pulse train with a "known" emitter. use… More