Abstract
Analytical expressions are developed for the far-zone field and the radiation resistance of an arbitrary travelling wave arc antenna embedded in a compressible plasma. These give the effects of different antenna parameters, as well as of plasma frequency, on the radiation properties. From the graphical presentation of the results, it is concluded that small angled arc antennas give better results in the plasma regions of frequencies comparable to that of the operation frequency of the antenna, while large angled arc and loop antennas are found to be more useful in the low-frequency plasma regions. The power radiated in the plasma mode by an arc antenna is found to depend on its length, but for a given length it is practically independent of its shape.
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