| 摘要 |
An extensible top-loaded biconical antenna is modified to improve low frequency performance while retaining standard performance specifications when needed. The biconical antenna includes a balun and a pair of conical outrigger assemblies coupled to said balun. A conducting tophat plate is removably attached to the ends of each outrigger assembly. The tophats increase the capacitance of the antenna, thereby improving its low frequency gain by 10 dB or more.
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