H - Electricity – 04 – B
Patent
H - Electricity
04
B
324/43
H04B 17/00 (2006.01) G01R 27/02 (2006.01) G01R 27/28 (2006.01)
Patent
CA 1190967
-17- ABSTRACT: A method of deriving information of the R.F. impedance presented by an electrical network at a port thereof, the network including a source of R.F. signals. The method consists of coupling to the port successively in two different states an arrangement comprising radio indicating means and auxiliary network means, in each of which states the auxiliary network means is in series between the port and radio indicating means and in which states the impedance presented by the arrangement at the port has different first and second values respectively and the gain of the arrangement between the port and the radio indicating means has different first and second values respectively. The radio indicating means is used to indicate any difference between the values respectively in the two states of at least one of the amplitude and phase parameters of the signal supplied to the radio indicating means relative to a signal of reference ampli- tude and phase at the source. The first and second values of impedance of the network, a respective locus in the com- plex impedance plane for the or each parameter, on which locus the respective difference is zero.
377579
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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