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Author : L. Dombro
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (493 download)
Download or read book Development of an 18 to 40 Ghz Low Noise Traveling-wave Tube Amplifier written by L. Dombro and published by . This book was released on 1970 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Dombro
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development of an 18 to 40 GHz Low Noise Traveling-Wave Tube Amplifier written by L. Dombro and published by . This book was released on 1970 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A low noise traveling wave tube amplifier packaged with integral solid state power supply and permanent magnet focusing was developed to cover the frequency band 18 to 40 GHz. The amplifier noise figure lies between 13 and 14 dB; the minimum small signal gain is 32 dB, and the gain variation is plus or minus 2.7 dB. The minimum saturated power output is + 6 dbm. The tube employs a hollow beam six anode low noise electron gun. A unique ridge waveguide coupler was developed to cover the double waveguide band. A key factor in reducing gain variation was development of an improved 'skrunching' method for the fluted glass helix support structure. The tube completes a series of four low noise traveling wave tube amplifiers covering the 0.5 to 40 GHz frequency band. (Author).
Author : L. Dombro
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development of an 8 to 18 Ghz Low Noise Twt Amplifier written by L. Dombro and published by . This book was released on 1968 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: An X- and K sub u-band, low-noise traveling-wave tube amplifier covering the 8 to 18 GHz frequency range was developed. This amplifier exhibits a maximum noise figure of 8.6 dB over 100 percent of the band and a 7.5 dB maximum noise figure over 60 percent of the band. Nominal small signal gain is greater than 30 dB, and saturated power output ranges from +5 to +10 dBm in an 18 pound, 4.5 inch diameter package. The design of this broadband amplifier is a logical extension of several known techniques including the fabrication of uniform dense cathode, low-loss circuits, broadband low-reflection couplers, and uniform, low transverse field permanent magnets, as well as considerable experience and knowledge gained in the earlier development of narrow band amplifiers in X- and K sub u-band. The performance of this X- and K sub u-band amplifier is superior to presently available low-noise amplifiers in K sub u-band alone, and it opens up applications for new wideband receiving systems with reduced complexity and cost. (Author).
Author : Robert D. Frost
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development of a 0.5 to 2.1 Ghz Low Noise Traveling-wave Tube Amplifier written by Robert D. Frost and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this program is the attainment of low-noise amplification over two octaves in a single traveling-wave tube. Noise figure is to be less than 6.5 dB from 0.5 to 2.1 GHz with a minimum of three milliwatts saturated power output. The work described herein has been aimed primarily at raising the power output to the required three milliwatt level and achieving uniform gain over the full band. This has been sought through the use of a servered helix, with the output section operating with higher voltage and lower gamma than the input, or low-noise section. Good results have been obtained with this method, the power output being greater than two milliwatts over practically the entire band. It is concluded that this approach is entirely feasible technically, and that future effort will be expended applying it to reduce gain variation at an increased power level. At present, noise figure of the tube is within the specification over all of the band. (Author).
Author : Robert Eastman Vehn
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.F/5 ( download)
Download or read book The Development of a Low-noise Backward-wave Amplifier Tube written by Robert Eastman Vehn and published by . This book was released on 1959 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 912 pages
Book Rating : 4.E/5 ( download)
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1346 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1985 with total page 1346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. P. ISRAELSEN
Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development of an L-band Low-noise Traveling-wave Amplifier written by B. P. ISRAELSEN and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. D. Frost
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development of a 2.0 to 8.0 Ghz Low Noise Permanent-magnet Traveling-wave Amplifier with Integral Power Supply written by R. D. Frost and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report for a program in which two very low-noise traveling-wave amplifiers covering the frequency range from 2.0 to 8.0 GHz have been developed. The amplifiers are focused by permanent magnet and are packaged with an integral power supply. Hence, by simply plugging the device into 115 volt, 60 Hz source one obtains a small signal amplification of 28 plus or minus 3dB with a noise figure less than 6 dB and a minimum saturated power output of 6.7 dBm or more over the entire double octave frequency range. The principal design techniques used in attaining this new ultra broadband amplifier include: a hollow beam low-noise gun having broadband characteristics; a straight field permanent magnet focusing arrangement; a severed helix where the input half is designed to minimize noise figure and the output half is designed to maximize power output while the combination is designed to minimize gain variation. The development of this ultra-broadband low-noise amplifier leads the way for development of similar amplifiers covering 0.5 to 2 GHz and 8 to 18 GHz. When these have been developed it will be possible to design wideband receivers and spectrum analyzers which are about half as complicated as present designs in the RF section. (Author).
Author : John N. Nelson
Publisher :
ISBN 13 :
Total Pages : 89 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development and Delivery of a Very Low-noise Traveling-wave Tube Amplifier written by John N. Nelson and published by . This book was released on 1965 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes the design and development of the WJ-276-6, a 5 dB terminal noise figure, 8.0 to 12.0 Gc/s, permanent magnet focused traveling-wave tube amplifier with integral power supply. The major problem in the development was reducing the terminal noise figure to less than 5 dB, while keeping the weight of the amplifier to less than 15 pounds. This problem was solved by the use of a hybrid straight field magnet, which provided a peak magnetic field of 1500 gauss in the critical region of the cathode and electron gun; a high gamma a, low RF loss helix assembly; a novel thin-rim cathode and flexible low noise gun assembly; and low RF loss waveguide input coupling. The report describes the important design considerations and the effect of the design parameters on traveling-wave tube performance. A physical description of the tube is presented along with important fabrication and measurement techniques. The progress which lead to the final design is chronicled, and the initial and final design values compared. (Author).
Author : B. P. Israelsen
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development of a Double Octave Bandwidth Traveling-wave Tube Amplifier written by B. P. Israelsen and published by . This book was released on 1964 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the program is the attainment of lownoise amplification over two octaves in a single travelingwave tube. Noise figure is to be less than 6 db from 2.0 to 8.0 Gc, with a minimum of ten milliwatts saturated power output. The work described in this report has been aimed primarily at reducing rf losses that occur in the input, since these losses add directly to the noise figure of the amplifier. These losses result from rf radiation at the pin seal, and from the insertion loss of presently available dc returns. The cathode coating has also been investigated. Two new cathode binder materials were evaluated with no significant effect upon noise figure of the amplifier. (Author).
Author : Stanford University. Stanford Electronics Laboratories
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.F/5 ( download)
Download or read book Typical Operating Characteristics of Traveling Wave Tube Amplifiers written by Stanford University. Stanford Electronics Laboratories and published by . This book was released on 1957 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alvin Ross Margolin
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.F/5 ( download)
Download or read book Development of a 300-1000 Megacycle Traveling Wave Tube Amplifier written by Alvin Ross Margolin and published by . This book was released on 1949 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. W. KINAMAN
Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (227 download)
Download or read book Development of a Millimeter Low Noise Traveling-wave Amplifier written by E. W. KINAMAN and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (946 download)
Download or read book Development of a Low-noise L-band Traveling-wave Tube written by and published by . This book was released on 1958 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicolaos Vassilopoulos
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (889 download)
Download or read book The Development of an Experimental, Low Profile, Broadband Travelling Wave Tube Amplifier written by Nicolaos Vassilopoulos and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (317 download)
Download or read book Development of an Engineering Model Traveling Wave Tube Amplifier for Space Communication Systems written by and published by . This book was released on 1972 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
