Integrated filter radiator for a multiband antenna
AssigneeJohn Mezzalingua Associates, Inc.
InventorKevin LE
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Abstract
Disclosed is a low band dipole that has four dipole arms in a cross configuration, and a simplified cloaking structure to substantially prevent interference with radiated RF energy from nearby high band dipoles. Further disclosed is a feed network and dipole stem balun configuration that power divides and combines two distinct RF signals, without the use of a hybrid coupler, so that the four dipole arms collectively radiate the two RF signals respectively at a +45 degree and −45 degree polarization orientation relative to the orientation of the dipole arms.
Claims21
-8. (canceled)
An antenna dipole, comprising:
- a first dipole arm that extends from a dipole center in a positive direction along a first axis;
- a second dipole arm that extends from the dipole center in a negative direction along the first axis;
- a third dipole arm that extends from the dipole center in a positive direction along a second axis, wherein the second axis is orthogonal to the first axis;
- a fourth dipole arm that extends from the dipole center in a negative direction along the second axis;
- a dipole stem on which the first, second, third, and fourth dipole arms are disposed, the dipole stem having a first dipole stem plate oriented along the first axis and a second dipole stem plate oriented along the second axis, the first and second dipole stem plates mechanically coupled in a cross arrangement having a center corresponding to the dipole center, the cross arrangement defining a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant;
- and
- a feedline network having a first feedline and a second feedline, wherein signals propagating on the the first feedline and the second feedline have orthogonal polarization with respect to one another.
A dipole, comprising:
- four dipole arms arranged in a cross configuration;
- and
- a dipole stem having a plurality of microstrip baluns and microstrip ground plates disposed thereon, wherein each of the microstrip ground plates is coupled to a corresponding dipole arm,
- wherein the microstrip baluns and microstrip ground plates are arranged such that each microstrip ground plate receives a directly-coupled RF signal corresponding corresponding to first orthogonally polarized signals a capacitively coupled RF signal corresponding to the second orthogonally polarized signals.
Dependencies are inferred from the claim text.