MULTIBAND HELICAL ANTENNA

摘要

A multiband antenna including a feed point, a helical radiating element galvanically connected to and fed by the feed point, the helical radiating element resonating in a Very High Frequency range and an elongate radiating element arranged coaxially within the helical radiating element and galvanically connected to and fed by the feed point, the elongate radiating element extending along only a portion of the helical radiating element, the elongate radiating element having a first resonant frequency and a second resonant frequency, the elongate radiating element operating as a quarter-wavelength monopole at the first resonant frequency and as an eighth-wavelength monopole at the second resonant frequency.

主权项

1. A multiband antenna comprising:
a feed point; a helical radiating element galvanically connected to and fed by said feed point, said helical radiating element resonating in a Very High Frequency range; and an elongate radiating element arranged coaxially within said helical radiating element and galvanically connected to and fed by said feed point, said elongate radiating element extending along only a portion of said helical radiating element, said elongate radiating element having a first resonant frequency and a second resonant frequency, said elongate radiating element operating as a quarter-wavelength monopole at said first resonant frequency and as an eighth-wavelength monopole at said second resonant frequency.