Back to results
US 12,191,580 B2Granted
Lowband dipole with improved gain and isolation
AssigneeJohn Mezzalingua Associates, Inc.
InventorsNiranjan Sundararajan, Wengang Chen, Jiaqiang Zhu
Life of this patent
Estimating the term…
Abstract
A lowband radiator has four dipole arms and a central region that is centered at the intersection of the dipole arms. Each of the dipole arms has a sequence of capacitive and inductive structures and a pair of high gain wings that are disposed in the dipole central region. In one embodiment of the lowband radiator, each dipole arm has a gap within the central region that is colinear with the dipole arm. The dipoles provide for improved isolation from nearby midband radiators while providing high gain.
Claims12
A dipole for a multiband antenna, comprising:
- four dipole arms arranged in a cross pattern, wherein the four dipole arms are arranged in a first pair of dipole arms and a second pair of dipole arms, the first pair of dipole arms are colinear and configured to radiate a first RF (Radio Frequency) signal at a first polarization angle and the second pair of dipole arms are colinear and configured to radiate a second RF signal at a second polarization angle, wherein the first polarization angle is perpendicular to the second polarization angle;
- and
- a central region, wherein the central region is centered at an intersection of the first pair of dipole arms and the second pair of dipole arms,
- wherein each of the dipole arms comprises a sequence of capacitive structures and inductive structures and a pair of high gain wings, wherein the pair of high gain wings are disposed in the central region.
1 more element
A multiband antenna, comprising:
- a plurality of midband dipoles arranged in a plurality of unit cells, wherein the plurality of unit cells are arranged in columns;
- and
- a plurality of lowband dipoles, wherein each of the plurality of lowband dipoles is disposed within a corresponding unit cell, wherein each of the lowband dipoles has four dipole arms arranged in a cross pattern, wherein the four dipole arms are arranged in a first pair of dipole arms and a second pair of dipole arms, the first pair of dipole arms are colinear and configured to radiate a first RF (Radio Frequency) signal at a first polarization angle and the second pair of dipole arms are colinear and configured to radiate a second RF signal at a second polarization angle, wherein the first polarization angle is perpendicular to the second polarization angle, wherein each of the lowband radiators has a central region, wherein the central region is centered at an intersection of the first pair of dipole arms and the second pair of dipole arms, wherein each of the dipole arms comprises a sequence of capacitive structures and inductive structures and a pair of high gain wings, wherein the pair of high gain wings are disposed in the central region, wherein each of the dipole arms has an outer arm that overlaps a corresponding midband dipole.
Dependencies are inferred from the claim text.