Low cost high performance multiband cellular antenna with cloaked monolithic metal dipole
AssigneeJohn Mezzalingua Associates, Inc.
InventorsNiranjan Sundararajan, Charles Buondelmonte, Andrew Litteer, Wengang Chen
Life of this patent
Estimating the term…
Abstract
Disclosed is a high performance low cost multiband antenna configuration that has a low band dipole having dipole arms formed of stamped sheet metal that has a plurality of slots. Some of the slots are oriented along a longitudinal axis of the low band dipole arm, and others are oriented orthogonal to the longitudinal axis. The presence of the slots creates a plurality of inductor structures, which act has cloaking structures that make the low band dipole substantially transparent to high band RF energy without inhibiting the performance of the dipole in the low band.
Claims23
A multiband antenna, comprising:
- a reflector plate;
- a plurality of high band dipoles configured to radiate RF energy in a high band;
- and
- a plurality of low band dipoles configured to radiate RF energy in a low band,
- wherein each of the low band dipoles has a plurality of low band dipole arms, each low band dipole arm being formed of a single piece of metal and having a plurality of slots, the plurality of slots defining a plurality of inductor structures in the low band dipole arm, the inductor structures each having a dimension that makes the inductor structure hinder the low band dipole from re-radiating RF energy in the high band, and that enables the inductor structure to radiate RF energy in the low band.
A multiband antenna, comprising:
- a reflector plate;
- a plurality of high band dipoles configured to radiate RF energy in a high band;
- and
- a plurality of low band dipoles configured to radiate RF energy in a low band,
- wherein each of the low band dipoles has a plurality of low band dipole arms, each low band dipole arm being formed of a single piece of metal and having a plurality of slots, the plurality of slots defining a plurality of inductor structures in the low band dipole arm, wherein the inductor structures hinder induced current corresponding to RF energy radiated by at least one of the plurality of high band dipoles.
Dependencies are inferred from the claim text.