MULTIFREQUENCY LOW-SILHOUETTE ANTENNA Russian patent published in 2003 - IPC

FIELD: antenna assemblies for ultra-high-frequency and very-high-frequency radio systems. SUBSTANCE: antenna has short dipole mounted on insulator above ground plane, its height being shorter than 0.1 wavelength of operating frequency range, and conducting disk connected through first two-terminal network to upper end of dipole. Input resistance of this two-terminal network is described by frequency function that has N (N = 1, 2, 3 ) poles (zeroes). Second two-terminal network is inductance that connects lower end of short vertical dipole and potential bus of antenna to ground plane. Relationship between parameters of two-terminal networks and short vertical dipole is given in description of invention. EFFECT: enhanced efficiency of antenna that can operate in several frequency bands at a time. 1 cl, 4 dwg