RT Journal Article
A1 C. Crampton
A1 W. Struszynski
A1 S. de Walden
A1 P.G. Redgment

PB
T1 Some principles underlying the design of aerial systems for high-frequency radio direction-finders in H.M. ships
JN Journal of the Institution of Electrical Engineers - Part III: Radio and Communication Engineering
VO 95
IS 38
SP 437
OP 453
AB The paper deals with the design of direction-finding aerial systems to cover the whole of the h.f. band, to work on the ground wave and to meet the conditions peculiar to H.M. ships. The special problems encountered are intimately connected with the siting of the d.f. aerial. The aerial must be fitted to the top of a mast, and often at a considerable distance from the receiving compartment.The most satisfactory design of d.f. aerial to meet these conditions consists of two fixed crossed loops with an incorporated sense aerial, and a network for injecting test signals into the d.f. and sense-aerial circuits. The aerial system must be connected to the receiving apparatus by means of transmission lines which may be of considerable length.The paper describes the special problems experienced in achieving satisfactory performance in sensitivity, bearing accuracy and resolution of sense ambiguity, the compromises in design that have to be adopted and the performance figures obtained.
DO https://doi.org/10.1049/ji-3-2.1948.0109
UL https://digital-library.theiet.org/;jsessionid=8cgpamejph7n7.x-iet-live-01content/journals/10.1049/ji-3-2.1948.0109
LA English
SN 0367-7540
YR 1948
OL EN