CONTROL AND MEASUREMENT OF ANTENNA POLARIZATION.
NAVAL RESEARCH LAB WASHINGTON D C
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The effectiveness of an antenna in receiving a polarized wave is very dependent upon the state of polarization of both the antenna and of the wave being received. While the degree of coupling between wave and antenna, or between two antennas, can be determined theoretically, a qualitative appreciation of how antennas and polarized waves interact often is more helpful in understanding the observed performance. Conceptual analysis of a polarization situation usually can be greatly simplified by considering it in terms of the circularly polarized components involved. The utility of this approach is illustrated in a discussion of variously polarized waves, and the use of circularly-bipolarized antennas for controlled polarization diversity. The concept of intrinsic polarization is introduced to simplify situations involving relative rotation of source and receiving antenna. Methods are discussed for measuring the polarization characteristics of antennas in terms of the sense, axial ratio, and orientation of the radiated wave. Various types of polarization resolvers and polarimeters used for this purpose are described. Author
- Electrical and Electronic Equipment