POWER TRANSFER BETWEEN TWO ANTENNAS WITH SPECIAL REFERENCE TO POLARIZATION
AIR FORCE WESTERN TEST RANGE VANDENBERG AFB CA
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The literature abounds with examples of a convenient equation the beacon equation for calculating the free-space power transfer between two widely spaced radio antennas haveing polarizations that are matched for maximum power transfer. On the other hand, convenient equations for making such calculations where the polarizations are not matched are very scarce. In this paper the well known beacon equation has been combined with a published but relatively little known general equation for polarization mismatch loss, so as to yield a complete general equation for calculating the power transfer between two widely spaced antennas in free-space. For convenience, the portion of the general power transfer equation that accounts for polarization mismatch loss has been reduced to yield a special equation for each of the five limiting cases. Also given are discussions of polarization problems and solutions in radio and radar, and a discussion of antenna radiation field representation methods and their use in calculating the power transfer between two antennas.
- Electrical and Electronic Equipment
- Active and Passive Radar Detection and Equipment
- Radio Communications