The Optimum Piston Position for Wide-Band Coaxial-to-Waveguide Transducers
- 1 February 1953
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IRE
- Vol. 41 (2) , 256-261
- https://doi.org/10.1109/jrproc.1953.274216
Abstract
A coaxial line can be matched to a waveguide by means of a probe antenna located ahead of a short-circuiting plunger. An impedance match can usually be achieved by varying any two of the following three dimensions: (a) the off-center position of the probe, (b) the probe length, (c) the piston position. This paper points out that there is, theoretically, an optimum piston position for greatest bandwidth, and presents some evidence corroborating this theory. Bandwidths greater than ±10 per cent to the 1 db swr points have been realized by fixing the piston at its optimum position and varying (a) and (b) above to obtain a match.Keywords
This publication has 1 reference indexed in Scilit:
- Design of Simple Broad-Band Wave-Guide-to-Coaxial-Line JunctionsProceedings of the IRE, 1947