Thursday, March 13, 2014

N20154 N20154 tiny TWT tube (shown in Figure 5) was developed to provide an always growing TWT tube


Based on the solid background san martin that e2v company in developing and manufacturing of tubes moving waves (TWT) Helix type, designed for airborne military applications, the company has developed a new generation of cordless TWT which spreads beyond airborne applications based used deception, and predicts the future requirements of the systems. For over twenty years the company produced tiny tubes broadband TWT (operating voltage of 6 pounds - V) for use in airborne Trick trailing (airborne towed decoy systems). The late nineties, it has developed tiny tubes TWT (operating voltage of 4.5 pounds - V) for use in airborne trailing deception which met the requirements of most serious military plans in Europe and the U.S.. TWT selection of tiny tubes based on broadband device's original ( 4.5 to 18 GHz), 100 watts, san martin 4.5 pounds - V, designed primarily to operate san martin at higher altitudes (70,000 san martin feet) and high temperature (over 140 C measured in the base plate of the tube TWT.) The new range of tubes provides TWT also tiny tubes narrow bandwidth and custom, san martin when the goal is to provide a range of devices to suit future applications, including electronic countermeasures (ECM), electronic warfare measures intended (EW), Power Modules microwave (MPM), RADAR Key Synthetic (SAR) and microwave data links. Based on the rugged and proven technology of today, these tubes offer output power, frequency range and improved efficiency.
TWT tubes tiny new-generation modeling in the design of important areas of TWT tubes together quickly creating san martin prototypes led to the development of a new family of tiny tubes TWT TWT using tiny tube as a basic planning. The result is three ranges of tiny tubes TWT News: TWT tubes Range Model N20173, 6 to 18 GHz reach 100 watts least TWT tubes Range Model N20160, 4.5 to 18 GHz typical supplier 140 W TWT tubes Range Model N20154, to -13.75 to 14.5 GHz (Ku bar area) come to 120 watts at least the data relating to performance, features and important operating parameters of these three new devices described san martin in this article. N20173 tiny tubes TWT currently standard, operate within the bandwidth of the 6 to 18 GHz, although they do not meet the required san martin output power upper frequency range. Urge the planning of N20173 (shown in Figure 1) was the aim of increasing the efficiency of the new device upper frequencies without degrading performance in the lower range of operation. This condition san martin was achieved by using slow wave structure (SWS) with a novel technique of phase velocity cone (phase velocity taper). The result is a receiver N20173 comes new high power 100 watts over the full operating frequency band, and the structure of RF (RF) New Harmony II reduces the output value is lower than 9dBc at 6 GHz. Figure 2 shows the performance power depending on the frequency of N20173 compared TWT tube e2v's standard. Moreover, TNC Coaxial port coordinated san martin optimization comes Navigator (VSWR) better than 2.2:1 and selection models include options Colette (Collector) san martin two notches or three levels, and the possibility of targeting electrodes action switching signals (pulses) or continuous wave operation (CW). N20173 receiver maintains the compact design of tiny tubes TWT e2v's standard length of 220 mm, a width of 27 mm and a height of 29 mm and a mass of less than 320 g. It can operate at a temperature of the base plate up to 140 C and at an altitude of 70,000 feet (approximately -21 700 m), provided shocks and vibration levels difficult.
N20160 recently felt a growing demand TWT tiny tubes that operate at higher power and have the ability to operate san martin over an extended san martin bandwidth of 4.5 to 18 GHz. This device is designed for N20160 (shown in Figure 3) as a direct replacement tubes tiny TWT standard, possesses the same tensions and keeping it spatial envelope. The improved performance san martin achieved by the combination of efficiency san martin improvements, san martin using cones speed (velocity taper) slow wave structure and by increasing the beam current. N20160 device has power of 140 watts at least from 6 to 13 GHz, more than 100 watts in the 18 GHz and more than 50 W 4.5 GHz. Pushing the required maximum RF saturation is +22 dBm and the small signal obtained from male middle band is 59dB. Using optimization slow wave structure created the possibility to improve the performance of the second harmony, performance are the predominant characteristic of multi-octave devices. Device san martin usually comes to levels of +1 dBc second harmony of 4.5 GHz and for - 10dBc at 6 GHz. figure 4 shows the frequency dependence power performance of the receiver tube TWT N20160 tiny compared to the standard of e2v. models of N20160 in early production tested through collectors (collector ) are two degrees and three degrees, reached Loaspakim less than -460 watts. increased performance were achieved while maintaining a compact size and weight - length of 220 mm, a width of 27 mm and a height of 29 mm and a mass of 320 gr.
N20154 N20154 tiny TWT tube (shown in Figure 5) was developed to provide an always growing TWT tubes low cost, light-weight, high efficiency and cost compact for communications applications and applications of data transfer connections. TWT design of a tiny tube away from the conventions of bandwidth and is optimized specifically for action narrow san martin band communications. Doing so gives him an edge over devices operating in the field of broadband linearity and flatness san martin (flatness) san martin enhanced man. Radio frequency circuit optimized for speed around the cone negative (negative velocity taper) to achieve high efficiency of the circuit san martin combined with the receptor (collector) Multigrade to exercise overall efficiency of the receiver

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