© The Institution of Electrical Engineers
The excitation mechanism of an untilted slot in the narrow wall of a rectangular waveguide by a suspended slotline has been described. Power radiated by this slot as a function of the slot width of the suspended slotline has been measured. This excitation mechanism appears promising for microwave integrated circuit antennas.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_19931035
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