rf switch power

rf switch power

Almost consistent omnidirectional antenna design unmanned aerial vehicles (UAVs)

Near the Online omni-directional antenna design for unmanned aerial vehicles (UAVs)

Technical Summary

TST offers the formation of R & D, satellite phone (CCAA), an aircraft capable of omni-directional antenna field near the field (TF) that the modest gain in the exhibitions "omni". Director. This RF switch makes selection array elements that include dipole or monopole elements and delay lines. This increase Gain allows the following improvements: reducing the power requirements the issuer and unmanned aerial vehicles auxiliary heat loads, interference and improved interference suppression and improvement of low probability of intercept (LPI) of performance. In addition, the power to reduce and alleviate the heat load increases the duration of the mission. We hope to reach a figure of 10 dB gain or more of the indicated amount in the application. CCAA none of the active elements that require only switches, hybrids, delay lines and radiators. This allows the use of business (rather than distributed) transmitters and receivers and avoids the cost of a traditional ASIC electronic scanning antenna. Work proposed to study and recommend the geometry of the radiator elements and tables, switching arrangements, conductor and dielectric materials, coating materials and methods, and fasteners. We will develop a model of high fidelity simulation of the antenna system of reference, and evidence covering the plans and mainlobe sidelobe characteristics.

Expected Benefits

The expected benefits for trade applications moderate gains include tracking antennas that conform to the surfaces of automobiles and commercial aircraft, too. The properties of low-cost resistance implementation aerodynamics, maneuverability and low are interesting for these applications. This not only result in improved communications performance (intensification trade, more reliable connections and higher capacity) conformation to reduce friction and improve fuel economy. A Phase 3 program it is expected that the basic taxonomy CCAA applies to a wide range of military ground and air platforms. In a network on the move (Notman) concept, many elements of a regiment can be interconnected to form a strong network that is any element of the switch and router. Connections are made or decrease changes the geometry network. CCAA can be mounted on truck or even as part of a combat helmet. The beams are driven by an embedded processor and inertial platform (for example, a gyroscope ring laser) to keep score. discovery and monitoring of the beams are interesting challenges for the design of the system, but the strength this network has a great reward. When you increase the capacity is activated (by a factor of 100 or more during this necessary for voice traffic), on board new business services such as Internet connections in flight at ADSL prices and, especially, for many passengers can be unbearable. Performance of the antenna platform of air is the key technology to promote this strategy development of win-win. The remains of the network elements, for the most part, already been developed and exist in terrestrial internet switches, routers, standards and protocols. The first Documents services such as mail transfer, JPEG images and music in real time high quality can be activated through radio bridges visible Internet. As capacity expands connectivity to T-1 and the above rates can be supported. As the availability of cell phones is ubiquitous in many continents, is easy to imagine its interconnection with commercial aviation. The cell phone user can then leave your phone in the ON state during the flight and continue using it as if he / she was still at the airport or office. The directional antenna to connect to cellular towers is possible from an omnidirectional antenna can "see" too many cell phone around the same time. Being able to select only a few laps in the footprint of the antenna beam makes reliable connections interference and eliminates all other towers that may be visible with an omnidirectional antenna. Thus, the high-gain antenna line is an important extension cabin to the daily business environment where the calculations, Internet communications, email, and voice conferencing are enabled. CCAA allows air travelers IT. The seller must first determine the technical feasibility studies and laboratory measurements. The technical community must be informed of the extension potential services. This awareness training will lead to standardization committees for an informed and focused set of protocols establishing then extend IP and Mobile services air travelers. When this system is in use in the business community, the Defense Department used surveillance infrastructure in support of defense programs. This model of investment in technology that is compatible with the Department of Defense adopted and implemented by the industry private and then used by the Department of Defense as part of our defense infrastructure developments in the course of events in the United States and around the world. The best examples of this process is circular Navstar GPS, SATCOM IDCSP and related systems, the Internet itself and all secure intranets for managing traffic of government, etc. There may come a time when communications using military aircraft to commercial infrastructure for ubiquitous connectivity and technology is shaping switching antenna array to enable key.

Current connectivity network among highly mobile forces tactics deployed in the battle field exhibits serious limitations extended connectivity, capacity and safety. The widespread deployment of SINCGARS and EPLRS radios in the field requires greater distances and more reliable connections that are enabled by the line of sight distances for which these stations are designed. Communications Relay UAV platform greatly expand the scope of these radios providing "elbow pipes" to extend communications and position reporting mission varies. The platform must allow the UAV connectivity and satellite radio repeaters. Given that the UAV must be located so that it can serve its designated area of the battlespace is the visibility in all directions is a necessary factor in the design of the antenna. The performance of Omni-directional implementation is essential to of the mission. We intend to study an antenna design that provides this connectivity and provides improved radio links using directional antennas can be oriented in all directions needed during the battle. Unlike a traditional antenna Omni, our approach provides an important robustness Links (best SNR, less interference and vulnerability to interference and low probability of intercept), but at the expense of some more complex systems. This performance / Complexity trade-off is at the center of the proposed study.

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