klopfenstein taper
时间：04-11
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Hi All,
R.W. Klopfenstein, ?A Transmission Line Taper of Improved Design?, Proc. IRE, Vol.44, pp.31-35, 1956.
In the January 1956 Proceedings of the IRE, R. W. Klopfenstein presented equations which can be used to design transmission line tapers. "...the Dolph-Tchebycheff taper is optimum in the sense that it has minimum reflection coefficient magnitude in the passband for a specified length of taper". One drawback of the Klopenstein taper is that an impedance discontinuity or step occurs at the ends of the taper.
R.P. Hecken, ?A Near-Optium Matching Section Without Discontinuities?, IEEE, Vol MTT-20, pp 734-739, 1972.
In the November 1972 Transactions of the MTT, R. P. Hecken modified the Klopfenstein methodology to eliminate the impedance discontinuities. This "near-optimum" taper is only slightly longer than the Klopfenstein taper.
Ok I copied the descriptions from a webpage...
What I'm trying to say here is-> both these designs were done a long time ago! (1970 & 1950)
Is there any improvements, since then. If you know of a paper the gives a better taper profile, please upload or at least post the paper title.
regards,
newbie101
R.W. Klopfenstein, ?A Transmission Line Taper of Improved Design?, Proc. IRE, Vol.44, pp.31-35, 1956.
In the January 1956 Proceedings of the IRE, R. W. Klopfenstein presented equations which can be used to design transmission line tapers. "...the Dolph-Tchebycheff taper is optimum in the sense that it has minimum reflection coefficient magnitude in the passband for a specified length of taper". One drawback of the Klopenstein taper is that an impedance discontinuity or step occurs at the ends of the taper.
R.P. Hecken, ?A Near-Optium Matching Section Without Discontinuities?, IEEE, Vol MTT-20, pp 734-739, 1972.
In the November 1972 Transactions of the MTT, R. P. Hecken modified the Klopfenstein methodology to eliminate the impedance discontinuities. This "near-optimum" taper is only slightly longer than the Klopfenstein taper.
Ok I copied the descriptions from a webpage...
What I'm trying to say here is-> both these designs were done a long time ago! (1970 & 1950)
Is there any improvements, since then. If you know of a paper the gives a better taper profile, please upload or at least post the paper title.
regards,
newbie101
This very interesting, but I think the theories in 1970& 1950 already very mature
take a look at this:
http://www.gb.nrao.edu/~rnorrod/Math...teintaper.html
If they use it at National Radio Astronomy Observatory...
I'm also trying to use it with 4 stacked helix
Ciao