By Y.T. Lo, S.W Lee
Lo Y., Lee S. Antenna guide (Van Nostrand Reinhold, 1993, 2)(ISBN 0442015933)
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Also given are corresponding values for the H-plane pattern for the dominant (TE,,) mode in the aperture of an open-ended circular waveguide. The E-plane pattern characteristics in this situation are those of a uniform aperture distribution in a circular aperture. " For the distributions (n E(e') = C + (1 - C)[1 - (2(>' /a)2r, n=O,I,2 (65) in a circular aperture, the normalized patterns are Cf(u,O) - (1 - C)/(n + l)f(u,n) C + (1 - C)/(n + 1) (66) where (67) are the normalized patterns of (64) in which u = (na/l) sin o.
And held an honorary professorship from the Shanghai Normal University. A Life Fellow of IEEE and a past chairman of the Antennas and Propagation Society (1971). he received a Distinguished Faculty Award from the University of Michigan in 1975. and several awards from the Department of Electrical and Computer Engineering and the College of Engineering at that university. 6-2 1. Equivalent Circuit of a Receiving Antenna By applying either Thevenin's theorem or Norton's theorem to a receiving antenna placed in a harmonically oscillating incident electromagnetic field, the load current can be calculated from the corresponding equivalent circuit (Fig.
3. 76 dB). Impedance-The input impedance of a small loop of one turn shown in Fig. 5a is composed of the ohmic resistance Rm the series inductance L 1oop , and the radiation resistance R1oop , which may be expressed as = R o loop length x Rs perimeter of wire cross section L 100p = l1 0 b In(b/a) = ~R a s (41) (42) (43) where = the loop radius a = the wire radius S = the loop area R,I' = the surface resistance = V(1)11/20, with 0 the conductivity of the metal that b the loop is made of A satisfactory formula for the series capacitance of a coil is not available.