Back in 1959 I was a member of the international group working at CERN, the European Laboratory in
At that time, there were various standard impedances for coaxial lines and cables. In
So I had to fit impedance transformers all over the place. I started with half-wave tapers where there was space, or quarter-wave stepped lines where there was not. Then I started looking analytically at various matching systems. Hence my report CERN 59-37. As it seemed to be of interest in other labs, I offered it for publication to the journal “Electronic Engineering” in January 1961 (reference 1). (Due to a printer’s error, my initial appears as B instead of P). Only in recent years have I seen many references to my work, perhaps because the Internet makes it much easier look in the literature.
The main interest in my transformer seems to have been in the
I have been pleased to see many references to my transformer on the Internet, thanks to L.B. Cebik (reference 2), Darrel Emerson (reference 3), and others. I have retired from CERN now (many years ago), and am living in
1. P. Bramham. A convenient transformer for matching coaxial lines. Electronic Engineering, Jan.1961. (Vol.33 no.395)
2. L.B. Cebik. Antenna application notes. Eagle.
3. Darrel Emerson. The twelfth-wavelength matching transformer. QST, June 1997 (Vol.81 no.6.)