APPLICATIONS

TELECOMMUNICATIONS, WIRELESS BROADBAND & BROADCAST

The global economy is irrevocably linked with the flow of Information Technology. Aria Microwave has been collaborating with several Telecom equipment companies.

Aria Microwave has completed design work on an "In Cavity Doherty Amplifier" which should offer four(4) times the power of any current Doherty amplifier while further improving efficiency and increasing operating bandwidth.

Cell phone tower systems have been limited by the power and efficiency of current amplifier technology. Now, with Active Cavity Amplifiers, not only can current tower systems be improved, but new 4G systems can be built with greater energy efficiency, meaning greater savings to telecom companies and consumers. In addition, by strategically placing multiple (often 3) low cost/low power receivers radially outward from one central high power transmitter in a cell, the overall coverage of a single tower system can be dramatically increased. This leads to extraordinary reductions in deployment costs, dramatically reducing the number of high cost components, namely the transmitter or downlink side of the system. Often a 4 to 1 decrease in the number of base station transmitters needed for certain deployment strategies is possible. Thus a dramatic decrease in the enormous deployment cost of certain networks.

In Summary; ACA can utilize almost all existing strategies like Doherty, Voltage-following, and any other advanced technique while delivering 2, 3, 4, 8 times the output power and at the same time still offer further improvements in efficiency

Current Legacy System Replacement Market, GSM, CDMA, 3G

By using ACA in the world-wide replacement market for the well over 3 million cell phone base stations supporting the existing commercial cell phone networks such as GSM and CDMA, service providers could substantially reduce there operating costs with the reduced energy costs, with a corresponding CO2 reduction of over 10,000 tons annually.  The replacement cycle of the amplifiers in this market is approximately every six (6) years, therefore it is estimated 50,000 amplifiers at an approximate cost of $1,000.00 per amplifier must be changed every year, implying a market size of approximately $50,000,000 annually with the cost per watt for an ACA less than half that.

Future Applications:

  • Satellite: Currently the world Satellite High Power Amplifier market is dominated by TWT's (Traveling Wave Tubes.) Expensive and unreliable, the industry has been looking for a solution to the inherent problems related to tube based amplifiers. By exciting higher order modes in the ACA cavity and using higher frequency GAs and GaN transistors it is now possible to attack this market with great success. In fact in television broadcast satellite systems, in order to avoid the reliability issues of vacuum tubes, the NFL paid Paradise Co., approx. $750,000 for ONE new solid state uplink amp. Because these higher frequency Satellites systems (Ku/Ka band) have problems transmitting in the rain signal reliability has become an issue. The reason is that the fines for a single artifact from the advertisers are fairly expensive and the fines for a 'baseball switch' (an abrupt noise filled switch) are extremely large. Also the additional difficulty due to the increased bandwidth required by the new HD broadcast it became even more necessary to find a reliable solid state solution. On the one hand, the Paradise amplifier is very large, requires a great deal of power, as well as, special air conditioning, where as the ACA would be much lighter, much smaller, much more efficient and therefore requires less thermal management. Aria Microwave is certain it can deliver a cheap, efficient, reliable amplifier for Satellite Market.
  • High Definition Television Broadcast: When the digital conversion was announced, the Television Broadcast market became a very interesting market because all the stations had to move from their VHF slots to the higher UHF 'High Def' Slots. Though our technology is a relatively small part of the value chain, Aria Microwave will still be able to provide a cost effective and highly reliable amplifier to this market. A large number of the Television transmitters still use Klystrons/Vacuum Tubes with their low reliability. These broadcast stations usually run a hot spare configuration, that the aural (sound) and video signals are transmitted from two different tubes, so if one goes down the other can take over the combined signal. Still if both go down, no signal, no income.

INDUSTRIAL/CHEMICAL PROCESSING

Aria Microwave has already collaborated with Cober Electronics to provide microwave amplifier technology to an Industrial Heating Process funded by the United States Food and Drug Administration. Aria Microwave has also received funding from Dupont Corporation to further research in providing solid state sources for Kevlar manufacturing.

As an essential part of many industrial/chemical processes, the performance of the 915 MHz prototype shows that models with CW (continuous) power at multi-kilowatt power levels can be manufactured and can be cost competitive with magnetrons. Pilot production of a 3 kW model is being planned in collaboration with an industrial heating company.  Because of its many advantages, including, high efficiency, high power, low cost, small size and ease of maintenance, other markets and applications we have been contacted about, and can now be considered including: 

  • Chemical and Plasma Processing: Kevlar, Lycra…
  • Semiconductor/Solar Panel Manufacturing: Semiconductor Bonding, Chemical Vapor Deposition…
  • Industrial Heating and Drying: Hotel Laundry, Counter-top Lamination… 
  • Food Processing: Egg Salmonella Sterilization, Orange Juice Pasteurization…
  • Medical Applications: Medical Diathermia, Instrument Sterilization, HVAC plasma air-disinfecting in Hospitals, Medical Accelerator, next generation MRI sources, Plasma Sourced Dermatological and Cosmetic Skin Treatments… 
  • "Green" High Efficacy Lighting: Plasma Lighting. 

DEFENSE SYSTEMS SOLUTIONS

Besides receiving approximately $1,000,000 in SBIR Phase I & II financing from the United State Ballistic Missile Defense Organization, and being well received and reviewed by the National Technology Transfer Commission,  Aria Microwave Systems has begun to explore the wide range of defenses applications made  available by this technology.

ACA is compatible with radar systems within the UHF through Ku band range. ACA can be employed in:

  • Maritime, Air, and Land Platforms
  • Early Warning Systems
  • Unmanned Systems 
  • Homeland Security including space technology 
  • Phased Array Radars

Increasing demands in radar technology are similar to those in telecom applications. Current radar systems lose power due to their inherent design. In many cases there is energy/line loss from the power amplifier to the antennae, which reduces the radar’s effective range. Owing to ACA’s unique, small footprint design (example: S-band radar ACA is 2.1 lbs, 480 watts, 3 inches in diameter or the size of a soup can), ACA provides optimum power utilization of the radar system.  By reducing energy loss by co-locating ACA with the antennae thus decreasing the huge line loss and greatly increasing the available power with a more powerful amplifier, the radar’s effective range is dramatically increased.

ACA’s state-of-the-art design, light weight, ease of assembly, on-site maintenance, and reduced life-cycle costs provides unprecedented levels of operational efficiency far above that of current SSPA and vacuum tube technology in many military applications.  For example, in the case of Unmanned Vehicles, not only is the range of the radar increased, but because of the light weight and improved energy efficiency, the Unmanned Vehicles can stay in combat operation longer and therefore effectively increase mission range.