ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485428

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

摘要:

ABSTRACTA description is given of a square stepped helical antenna radiating in the axial mode. Its impedance characteristics, radiation patterns, estimated directivity and axial ratio are presented. The square stepped helix is compared with a conventional helix and its advantages briefly referred to. In an attached Appendix, its radiation pattern is derived, assuming an unattenuated travelling wave along the antenna.

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485429

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

摘要:

ABSTRACTAlternating current isographs, representing the terms of a polynomial by variation of the time phase of a.c. generator outputs have not attracted much attention in recent years. In this paper we shall describe an isograph based on this principle, and which is capable of solving seventh degree equations having real coefficients. The instrument as constructed can also be used for the deliniation of the frequency response of passive and active networks and by a curve fitting process, for network synthesis.

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485430

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

摘要:

ABSTRACTThe paper deals with an analytical study of magnetic storm in relation to the occurrence of SIL. The most probable value of delay between an occurrence of a SIL and that of magnetic storm has been found to be 23 hours. The most probable value of duration of magnetic storm has been found to be 26 hours as against 34 hours found for type 3 flares as observed through SIL.It has been further found that in case of occurrence of class 3 flare as observed through SIL, there is 60 per cent chance of occurrence of magnetic storm as against about 25 per cent in case of optical flares.

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485431

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485432

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485433

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485434

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485435

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485437

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor

ISSN:0377-2063    

DOI:10.1080/03772063.1967.11485438

出版商:Taylor&Francis    

年代:1967

数据来源: Taylor