Dual-band omnidirectional antenna
AssigneeMobile Mark, Inc.
InventorsDaniel A. Pakosz, Randy Posluszny, Clifford Raiman
Life of this patent
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Abstract
A dual-band omnidirectional antenna is provided. The antenna comprises a vertically stacked antenna array, in the following order: a first dual-band dipole which resonates at a first frequency band and a second frequency band, a first single-band dipole which resonates only at the first frequency band, a second single-band dipole which resonates only at the first frequency band, and a second dual band dipole which resonates at the first frequency band and second frequency band. The first frequency band is of a higher frequency than the second frequency band.
Claims14
A dual-band omnidirectional antenna which comprises:
- a vertically stacked antenna array comprising, in order in the stack, a first dual-band dipole which resonates at a first frequency band and a second frequency band, a first single-band dipole which resonates only at the first frequency band, a second single-band dipole which resonates only at the first frequency band, and a second dual-band dipole, which resonates at the first frequency band and the second frequency band;
- the first frequency band being of a higher frequency that the second frequency band, a feed point for a transmission line located between the first single-band dipole and the second single-band dipole, and
- said single-band dipoles having DC shorts;
- the first single-band dipole and the second single-band dipole are non-symmetrical from the feed point whereby the phase contributions of the first dual-band dipole and the first single-band dipole are different from the phase contributions of the second single-band dipole and the second dual-band dipole.
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A dual-band omnidirectional antenna which comprises:
- a vertically stacked antenna array comprising, in order in the stack, a first dual-band dipole which resonates at a first frequency band and a second frequency band, a first single-band dipole which resonates only at the first frequency band, a second single-band dipole which resonates only at the first frequency band, and a second dual-band dipole which resonates at the first frequency band and the second frequency band;
- the first frequency band being of a higher frequency than the second frequency band;
- a feed point for a transmission line between the first single-band dipole and the second single-band dipole;
- said dual-band dipole being series fed and as a combination with a single-band dipole being corporate fed;
- the single-band dipoles having DC shorts;
- the first single-band dipole and the second single-band dipole are non-symmetrical from the feed point whereby the phase contributions of the first dual-band dipole and the first single-band dipole are different from the phase contributions of the second single-band dipole and the second dual-band dipole.
Dependencies are inferred from the claim text.