This research develops a spectrometer frontend for use at 557 ghz (the 1[10] - 1[01] transition of water vapor). during phase i, the design is researched; a complete spectrometer frontend is fabricated and tested during phase ii. the major components developed include: a solid-state local oscillator… More

Although ozone is a mirror constituent of the earth's atmosphere, it plays a major role in determining the climateof our planet. absorption of biologically harmful radiation by ozone is also necessary to maintain the viability of life on earth. the ability to accurately measure the amount of ozone… More

The requirement for higher power and more efficient millimeter wave sources for smart munitions leads us to suggest gunn diodes as an area of possible improvement. we propose to initiate a research program which will identify and characterize gaas gunn diode design and fabrication improvements for… More

Expansion of space-borne radiometers and other action systems into the submillimeter frequency spectrum has shown the severe limitations on source performance imposed by prevailing technology. a research program is proposed to develop new approaches to source design in order to produce reliable,… More

Gaussian beam weaveguide (gbw) is a natural transmission medium for multi-spatial, multi-polarization systems at millimeter wavelengths. in phase i of this effort we will study the imaging properties of gbw with application to systems requiring monopulse beam formation for tracking information. we… More

Novel techniques are proposed for constructing w-band transmitter sources for use in hypervelocity models of projectiles. the proposed study involves the mechanical and electrical design of planar, integrated gunn diode oscillators which can operate during acceleration greater than 100,000 g. the… More

Millitech proposes a millimeter wave fmcw sensor system to satisfy the growing need for a small, modular, and inexpensive short range non-contact ranging system for robot collision avoidance. use of millimeter waves overcomes most of the short-comings of existing ultrasonic and infrared sensors.… More

Improve control and faster switching speeds have become necessary to achieve acceptable system performance of millimeter wave phased array systems. the proposed study has the objective of applying quasioptical techniques to solve the technological problems associated with discrete control devices.… More

Millitech proposes to design a compact offset cassegrain antenna system to be used at a wavelength of 8 mm for cloud research. the system will be designed to give the lowsidelobe levels characteristic of an offset reflector while giving polarization isolation better than 20 db. the trade-off between… More

Two of the major problems in millimeter wave phased arrays are: overcoming the space limitations for the radiating modules by innovative aperture utilization techniques and providing a practical beam scanning arrangement. both of these important areas will be investigated by computer analysis and… More

Monopulse antennas are complex and extremely sensitive to frequency, temperature and environment at microwave frequencies and even more so at millimeter waves. adding a dual-polarization requirement greatly increases the complexity of the whole monopulse assembly since the monopulse combining… More

The scope of this project is twofold. one part comprises a study of a focal plane imaging system to be used for plasma diagnostics. plasma is measured at submillimeter wavelengths (frequencies above 300 ghz) by interferometry and at millimeter wavelengths (30-300 ghz) by reflectometry and… More

A novel approach for achieving beam-steering of a 60 ghz communication system is described. the proposed technique eliminates some of the serious drawbacks of the current phased array concepts using ferrite or solid-state phase shifters. the scheme has a potential for monolithic implementation. the… More

A compact millimeter wave aperture antenna can be developed to meet high performance expectations while reducing the long axial length of current high performance antennas (reflectors, lenses, etc). by clever use of the older classical antenna designs (zoned optical techniques) with modern planar… More

Millitech proposes to design a sensor to be used for satellite borne observations of precipitation, sea surface, and atmospheric soundings. this sensor will comprise a common aperture antenna and a gaussian optics frequency multiplexer which will be used with low noise receivers in the future. the… More

Millitech proposes to explore the development of an innovative passive millimeter wave (pmmw) sensor for use in all-weather, all-battlefield enviroment detection and targeting for missile guidance. current millimeter wave (mmv) missile guidance is based on active radar technology which is… More

Many millimeter wave radar and communications applicatins require total RF output power of 30W or more. Since one solid state three-terminal amplifier can deliver less than a Wattat these frequencies, the outputs of several devices must be combined to achieve the power levels desired. Conventional… More

A common requirement of missile delivery systems is an ECM resistant, all- weather, day/night capability. The all-weather, day/night requirement leads to millimeter waves as a reasonable solution. The current proliferation of ARM devices favors passive rather than active modes. An analytical Model… More

Antenna beam scanning is a critical aspect of many radars and systems used for remote sensing and radiometry. Traditional beam scanning is usually done mechanically or with a phased array. Mechanical scanning is cumbersome and often requires large amounts of power. Phased array beam scanning is… More

Millitech proposes a trade-off study and concept development for a millimeterwave preview sensor to provide feedback t an active suspension controller. The sensor will detect obstacles 5 to 30 feet in front of the vehicle with a height greater than the suspension travel of the vehicle. The… More

Millitech proposes to develop subsystem module and component technology for millimeter wave interrogators and responders for use in IFF systems. The friendly fire casualities suffered by US and British forces during Operation Desert Storm are recent reminders of this unpleasant fact of warfare.… More

Millitech is porposing a very practical and reliable antenna design that includes proven technologies. The proposed antenna is composed of a high efficiency reflector aperature with a planar rotating twist-reflector to provide the scanning in both Azimuth and Elevation planes. Many successful… More

The rapidly developing market for Passive Millimeter Wave (PMMW) imaging cameras with a frame time of one second or less includes commercial as well as military applications. Several application opportunities are listed below. An analysis is application-oriented requirements leads to the… More

A one watt 94 GHz power amplifier with >2 GHz bandwidth will be designed, and an operational brassboard model fabricated. The approach is based upon power combining of four single-diode silicon IMPATT amplifier modules using magic-tees. The brassboard model will serve as a developmental unit… More

The rapidly developing market for Passive Millimeter Wave (PMMW) imaging cameras with a frame time of one second or less includes commercial as well as military applications. Several application opportunities are listed below. An analysis is application-oriented requirements leads to the… More

The proposed millimeter wave sensor alleviates the data fusion problem by incorporating both active as well as passive operating odes in a single sensor, such that they can be operated either individually, in time sequence, or simultaneously. A unique feature is the use of a common high-speed,… More