Method and apparatus for measuring antenna radiation efficiency

Details Method and apparatus for measuring antenna radiation efficiency Method and apparatus for measuring antenna radiation efficiency

1992-03-13

1994-04-05

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Measuring signal energy

H01Q 112, G01R 2908

Patent

active

053009398

ABSTRACT:
The present invention relates to an apparatus for measuring antenna radiation efficiency, wherein a random field measurement method can be adopted. In this apparatus, a to-be-measured antenna and a standard antenna are situated in a frame. In the frame, a plurality of rods, which are horizontally movable and extend vertically, are supported. A plurality of radio wave scatterers whose intervals and curvatures can be determined at random are held to the rods. In the frame, a random field is created by the radio wave scatterers.

REFERENCES:
Proceedings of the IRE, Aug. 1989, pp. 1325-1331, H. A. Wheeler, "The Radiansphere Around A Small Antenna".
IEEE Transactions On Antennas and Propagation, vol. AP-23, No. 4, Jul. 1975, pp. 457-461, E. H. Newman, et al., "Two Methods For The Measurement of Antenna Efficiency".
IEEE Transactions On Vehicular Technology, vol. VT-26, No. 4, Nov. 1977, pp. 349-357, J. B. Andersen, et al., "Antennas For VHF/UHF Personal Radio: A Theoretical And Experimental Study Of . . . ".
(A Japanese Publication), B vol. J 71-B, No. 11, 1988, pp. 1259-1265, Tadahiko Maeda, et al., "Experimental Studies And Improvements On The Accuracy Of The Indoor Random Field Measurement Method . . . ".
IEEE Tokyo Section, Denshi Tokyo No. 28, 2989, pp. 143-147, Tadahiko Maeda, et al., "The Development Of An Antenna Radiation Efficiency Measurement Method Including The Effects On The Human . . . ".

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