TWTA


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TWTA

(electronics)
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In [1], the design method for high power microwave gain equalizer of waveguide type used for travelling wave tube amplifiers (TWTAs) is presented.
The satellite transponder is the central element of a considered communication channel, and transponder linear gain along with a choice of a working point (level of TWTA nonlinearity) have a strong impact on quantity of errors at data transmission.
By not using separate ports in the middle, the length of the TWTA structure is reduced, which is promising for employing PPM (periodic permanent magnet) design [13] for a truly compact and light weight TWT package.
For a helix TWTA, shown in Figure 2(a), its total RF field profile can be described by the 0th space harmonic component as
The enquiry found that the merged firm would have little scope to discriminate against downstream competitors by foreclosing on the supply of TWTs, because most manufacturers now buy TWTAs from Tesat or L3 rather than buying TWTs and EPCs separately.
Using solid-state devices combined with good thermal management results in high mean time between failure (MTBF), especially when compared with a TWTA. In the event of module failure, the amplifier output power and gain will gracefully degrade--"soft fail"--with the modular design lending itself to straightforward repair by replacing just the module.
In that configuration, it is a TWTA. What does customs do with that?
Cost constraints dictate the use of solid-state amplifiers, rather than the more costly, but higher-powered, traveling wave tube amplifiers (TWTA).
The output portion of this architecture consists of a high-power travelling-wave tube amplifier (TWTA) for each channel, and an output multiplexer to combined channels of different frequencies into a single antenna port.
ACTIA Telecom also designs and manufactures its own TWTA and SSPA for C, X, Ku, DBS, Ka and Q & V band Satellite communication.
The Ku- and Ka-band TWTAs ordered for this challenging Army application are part of Comtech Xicom Technology's industry-leading high efficiency TWTA product line and will be delivered this year.
DiBiase continued, "Our revolutionary AA18G26 and AA26G40 field generator systems will be capable of producing 30 V/m in both the 18--to 26.5-GHz and 26.5--to 40-GHz band and will be a fitting replacement for current TWTA designs." Finally, he said, the company's newest division, SunAR RF Motion, will highlight products such as its EMI test antennas and antenna-positioning equipment.