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Directional Properties of Wireless Receiving Aerials

Published online by Cambridge University Press:  24 October 2008

D. Burnett
D. Burnett
Affiliation:
Clare College
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Extract

Equations have been given by Moullin to determine the current in a receiving antenna in wireless telegraphy and they have been discussed and extended by Colebrooke, who in particular considered the reception of a plane polarised wave with its electric vector vertical by an antenna which is partly vertical and partly horizontal. His result shows that the intensity of the received signal is independent of the orientation of the receiver. In practice, however, the incident wave front is not vertical, its tilt depending on the wave length and on the resistance of the earth, as shown by Zenneck, and the purpose of this paper is to investigate the effect of the orientation of a bent antenna in the reception of this type of wave. An approximate theory of the Beverage antenna is obtained by the same method.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 24 , Issue 4 , October 1928 , pp. 521 - 530
Copyright
Copyright © Cambridge Philosophical Society 1928

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References

* Moullin, E. B., Proc. Camb. Phil. Soc. vol. xxii, p. 567, 1925.CrossRefGoogle Scholar

† Colebrooke, F. M., Exp. Wireless, vol. iv, p. 657, 1927.Google Scholar

‡ See a series of papers by Beverage, , Rice, , and Kellogg, , Journ. Amer. Inst. Elect. Eng. vol. XLII, 1923.Google Scholar

* These are the values given by Colebrooke (loc. cit.) for a typical aerial.Google Scholar

† If it were, the effect of re-radiation would have to be considered.Google Scholar

* Macdonald, H. M., Electric Waves, §§68–70, 76.Google Scholar

† From the figures given by Lee, (Journ. Inst. Elect. Eng. vol. LXVI, p. 19, 1927) it appears that the values of κ/m for two antennae at Cupar are 1·09 and 1·10 respectively.Google Scholar