Design and analysis of a low-loss linear analog phase modulator for deep space spacecraft X-band transponder applications

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[唯一标识符]:CDSITC.AEROSPACE.N94-29625
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:N1994-29625; Reference AN: N94-29625
[标题]:Design and analysis of a low-loss linear analog phase modulator for deep space spacecraft X-band transponder applications
[作者]:MYSOOR N R; MUELLER R O
[书名]:IN: its The Telecommunications and Data Acquisition Report p 136-145 (SEE N1994-29613 08-32)
[来源]:In-its-The-Telecommunications-and-Data-Acquisition-Report-p-136-145-(SEE-N1994-29613-08-32)
[文摘]:This article summarizes the design concepts, analyses, and development of an X-band (8145 MHz) transponder low-loss linear phase modulator for deep space spacecraft applications. A single-section breadboard circulator-coupled reflection phase modulator has been analyzed, fabricated, and evaluated. A linear phase deviation of 92 deg with a linearity tolerance of +/- 8 percent was measured for this modulator from 8257 MHz to 8634 MHz over the temperature range -20 to 75 C. The measured insertion loss and the static delay variation with temperature were 2 +/- 0.3 dB and 0.16 psec/ C, respectively. Based on this design, cascaded sections have been modeled, and simulations were performed to provide an X-band deep space transponder (DST) phase modulator with +/- 2.5 radians (+/- 143 deg) of peak phase deviation to accommodate downlink signal modulation with composite telemetry data and ranging, with a deviation linearity tolerance of +/- 8 percent and insertion loss of less than 10 +/- 0.5 dB. A two-section phase modulator using constant gamma hyperabrupt varactors and an efficient modulator driver circuit was breadboarded. The measured results satisfy the DST phase-modulator requirements and show excellent agreement with the predicted results. (Author (revised))
[关键词]:ANALOG CIRCUITS; DEEP SPACE; DOWNLINKING ; LINEAR SYSTEMS; MODULATORS ; PHASE DEVIATION; PHASE MODULATION; SPACE COMMUNICATION; SUPERHIGH FREQUENCIES; TELEMETRY ; TRANSPONDERS ; BREADBOARD MODELS; INSERTION LOSS; RANGEFINDING ; VARACTOR DIODES
[出版年份]:1991
[专业领域]:COMMUNICATIONS AND RADAR
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[文献类型]:科技报告
[标题]:ULTRASONIC ATTENUATION NEAR AND ABOVE THE SPIN-FLOP TRANSITION OF MnF2,
[作者]:shapira, y. zak, j.
[机构]:Massachusetts Inst of Tech Cambridge National Magnet Lab
[关键词]:manganese compounds,sound transmission,antiferromagnetism,fluorides,magnetic fields,ultrasonic radiation,manganese fluoride,electron spin
[出版年份]:1969
[报告号]:Rept no. JP-295
[报告时间]:29Jan 68,
[页码]:12p
[馆藏索取号]:AD-685087
[总页数]:0


[唯一标识符]:CDSTIC.ISTP.672565
[文献来源]:科学技术会议录索引(ISTP)
[文献类型]:科技会议
[标题]:GROWTH AND DOPING OF SIC-THIN FILMS ON LOW-STRESS, AMORPHOUS SI3N4/SI SUBSTRATES FOR ROBUST MICROELECTROMECHANICAL SYSTEMS APPLICATIONS
[作者]:L CHENG;M PAN;J SCOFIELD;AJ STECKL
[出版单位]:MINERALS METALS MATERIALS SOCWARRENDALE
[ISSN_ISBN]:0361-5235
[会议名称]:43rd Electronic Materials Conference,SOUTH BEND, IN,June 27-29, 2001
[来源]:JOURNAL OF ELECTRONIC MATERIALS,pp 361-365
[地址]:L CHENG,UNIV_CINCINNATI, NANOELECT LAB, CINCINNATI, OH 45221 USA
[专业领域]:ENGINEERING, ELECTRICAL & ELECTRONIC,MATERIALS SCIENCE, MULTIDISCIPLINARY,PHYSICS, APPLIED