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单词 Rhombic antenna
释义

Rhombic antenna

英语百科

Rhombic antenna

A horizontal three-wire rhombic antenna.  This example is terminated with a lossy transmission line instead of a resistor.
AT&T 2 wire rhombic in Dixon, California, in 1937, used for telephone service to Shanghai, China
Diagram of radiation patterns (grey) of each segment of the antenna illustrates how it works.  By using the correct vertex angle, one of the main lobes of each of the 4 sides point in the same direction, reinforcing each other, increasing the gain.
Small rhombic UHF television antenna from 1952.  Its broad bandwidth allowed it to cover the 470 to 890 MHz UHF television band.

A rhombic antenna is a broadband directional wire antenna co-invented by Edmond Bruce and Harald Friis, in 1931, mostly commonly used in the high frequency (HF) or shortwave band.

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