Knowledge Centre
Find a document written by the best international scientists in our secure database.
24776 documents found.
COMPUTER AIDED DESIGN FOR PLANAR MICROSTRIP CIRCUITS ANALYSIS BY BOUNDARY-INTEGRAL METHOD
COMPUTER AIDED DESIGN FOR PLANAR MICROSTRIP ANALYSIS BY BOUNDARY-INTEGRAL METHOD S. S. Chang, W. X. Huang and T.ltoh CIRCUITS ABSTRACT A CAD program for the analysis of planar microstrip circuits of arbitrary shape has been developed. The usefulness of the program is demonstrated by analyzing the rightangled microstrip bend, microstrip T-junction, and microstrip Y-junction, covering a large ran
ANALYSIS AND MEASUREMENT OF TOLERANCES IN MMIC ACTIVE PHASED ARRAYS
ANALYSIS PHASED AND MEASUREMENT ARRAYS OF TOLERANCES IN MMIC ACTIVE A. I. Zaghloul,. J. R. Potukuchi,. R. C. Mott,. and R. T. Kroll. ABSTRACT A sensitivity analysis using the Monte Carlo technique is perfonned on an active phased array that was designed and built to provide satellite coverage to a number of shaped spot beams operating at K -band. The allowable variations (tolerances) for the
AN INTELLIGENT ELECTRONICALLY SPINNING TACAN ANTENNA
AN INTELLIGENT S J Foti., ELECTRONICALLY R Cahill.., SPINNING T Macnamara., T ACAN ANTENNA K C Shi., I Collings., H K Wong* M W Shelley., ABSTRACT A T ACAN (Tactical air navigation) beacon antenna system prototype development for use as an en-route and/or terminal navigation aid is described. This electronically spinning (900 rpm) antenna operating over the 962 to 1213 MHz band is realised by
SYSTEM DESIGN CONSIDERATIONS IN FIBER-OPTIC NETWORKS FOR ACTIVE ARRAY SATELITE ANTENNA
SYSTEM DESIGN CONSIDERATIONS NETWORKS FOR ACTIVE ARRAY IN FIBER-OPTIC SATELITE ANTENNA ADAM LIVNE* ABSTRACT Multiple pencil-beam scanning/hopping antenna systems provide a powerful approach to increase the satellite's capacity by the frequency reuse, the increased e.i.r.p. and G/T of each of the pencil beams, and also by the efficient satellite resources utilization through matching the anten
PERFORMANCE OPTIMIZATION OF OPTICALLY CONTROLLED PHASED ARRAY ANTENNA T/R MODULES
PERFORMANCE OPTIMIZATION OF OPTICALLY ARRAY ANTENNA T/R MODULES CONTROLLED PHASED T. Berceli*, P. R. Herczfeld*, A. S. Daryoush*,and A. Rosen** ABSTRACT The desirability of fiberoptic feed networks for the new generation of phased array antennas has been established. Fiberoptic feeds for T IR modules have been demonstrated up to the millimeter wave range. This has led to an increased interest
THE APPLICATION OF MICROWAVE POWER TO THE CONTROL OF SLUGS IN AGRICULTURE
THE APPLICATION OF MICROWAVE POWER TO THE CONTROL OF SLUGS IN AGRICULTURE. L J Auchterlonie*, P N Fletcher.* W J S Kershaw+, H J Bolton+ A L Hume*, ABSTRACT The question of whether high-power microwave radiation applied to the soil surface would afford a viable means of eliminating the slug population is addressed. In a co-operative venture, undertaken by agricultural biologists and mic
NEAR FIELDS SCATTERING IN MICROWAVE MEDICAL AND INDUSTRIAL APPLICATIONS
NEAR FIELDS SCATTERING IN MICROWAVE MEDICAL AND INDUSTRIAL APPLICATIONS M. AUDHUY-PEAUDECERF, S. LEFEUVRE, F. HOUAMEL, A. BOUIRDENE * ABSTRACT In the medical and industrial application, the micro- wave sources are often put near irradiated dielectric mate- rials. At proximity of the application, the radiated fields have the properties of near-zone fields. In this paper we inve
RADIOMETER FOR MICROWAVE THERMOGRAPHY
RADIOMETER FOR MICROWAVE THERMOGRAPHY I.M.ANGELOV, L.K.URSHEV, I.K.STOEV, A.Y.SPASOV, N.Y.KOUMANOV, S.S.GEORGIEV, V.P.VASSILEV*,V.DEMENTIENKO** INTRODUCTION Microwave thermography is a passive, noninvasive technique for measuring the thermal radiation of the human body. Being a biological object, like each physical body it is a source of electro-magnetic radiation. The distribution of the radi
BIOLOGICAL EFFECTS OF MICROWAVES IN ACUPUNCTURE
BIOLOGICAL EFFECTS OF MICROW AVES IN ACUPUNCTURE Jian TENG, Danielle V ANHOENACKER, Andre V ANDER VORST* ABSTRACT Microwave acupuncture is a very interesting field of investigation. The biological effects of microwaves offer general interesting developments, and microwave acupuncture more specifically is rather intriguing, being in the border area of three fields: microwaves, acupunct
MICROWAVE BALLOON ANGIOPLASTY
~'1ICROIAfA!..JE BALLOm.J ANGIOPLASTY ~~. Res. Po (I)! n A. Martinez A. Presser P. 'lJa 1 ins Ky <*), D. Sm i t h ( *:;, Y. Shi':: *), Z. KCI .ma n <*) , s <I), H. Rosen <I), F. Sterzer <**), D. Mawhinney (**), '::I*)~ J-S. Chou CIII), P. Goth <***), G. Lowery (*1*) ABSTRACT Preliminary experiments in the induction of 1ocalized myocardial tissuie modification by microwave energy, without ca