US 2021/0280985 A1 · MULTI-BAND FAST ROLL OFF ANTENNA HAVING MULTI-LAYER PCB-FORMED CLOAKED DIPOLES

Abstract

Disclosed is a telecommunications antenna having a plurality of cloaked low band (LB) and high band (HB) dipoles. The LB and HB dipoles provide cloaking by breaking the dipoles into dipole segments, and providing conductive cloaking elements over the gaps between dipole segments to form a plurality of capacitors along the dipole. The capacitors along the LB dipoles provide a low impedance to LB RF signals and a high impedance to HB signals. The capacitors formed on the HB dipoles provide a low impedance to RF signals and high impedance to harmonics of the LB RF signals. This cross-cloaking of dipoles enables more dense arrangements of LB and HB dipoles on an antenna array face, providing opportunities to arrange, for example, the LB dipoles with an array factor that results in an advantageous fast roll off gain pattern.

Claims33

Dependent claims

A cloaked high band dipole for an antenna, comprising:

a first PCB layer;
a conductive layer disposed on a first side of the first PCB layer, the first conductive layer forming a plurality of capacitive feeds;
a second conductive layer disposed on a second side of the first PCB layer, the second conductive layer arranged in a plurality of dipole segments, each adjacent dipole segment separated by a gap;
a second PCB layer disposed on the second conductive layer;
and
a third conductive layer disposed on the second PCB layer, the third conductive layer configured to form at least one cloaking element, wherein the cloaking element overlaps adjacent dipole segments, to create a low impedance coupling between the adjacent dipole segments at a high band frequency.

3 more elements

A cloaked low band dipole for an antenna, comprising:

a first sub dipole oriented along a first axis, the first sub dipole having a first plurality of dipole segments that are disposed on a capacitor PCB layer, wherein adjacent dipole segments within the first plurality of dipole segments are separated by a first gap, wherein the first sub dipole has a plurality of first cloaking elements disposed on an opposite side of the capacitor PCB layer from the plurality of dipole segments, each first cloaking element corresponding to a first gap, and wherein each first cloaking element is disposed such that it is superimposed over the corresponding first gap to form a first capacitor between the first cloaking element, the capacitor PCB layer, and the adjacent dipole segments corresponding to the first gap;
and
a second sub dipole oriented along a second axis, the second sub dipole having a second plurality of dipole segments that are disposed on a capacitor PCB layer, wherein adjacent dipole segments within the second plurality of dipole segments are separated by a second gap, wherein the second sub dipole has a plurality of second cloaking elements disposed on an opposite side of the second PCB layer from the plurality of dipole segments, each second cloaking element corresponding to a second gap, and wherein each second cloaking element is disposed such that it is superimposed over the corresponding second gap to form second capacitor between the second cloaking element, the second PCB layer, and the adjacent dipole segments corresponding to the second gap, wherein one of the second dipole segments is coupled to a ground plane.

A telecommunications antenna, comprising:

a plurality of high band dipoles, wherein the high band dipoles are configured to radiate RF energy between a first high band frequency and a second high band frequency, and wherein each of the high band dipoles has a high band PCB structure;
and a plurality of low band dipoles, wherein the low band dipoles are configured to radiate RF energy between a first low band frequency and a second low band frequency, wherein each of the low band dipoles has a low band PCB structure, wherein each of the plurality of high band dipoles has a plurality of high band dipole segments that are configured to be capacitively coupled to have a low impedance between the first high band frequency and the second high band frequency, and to have a high impedance between the first low band frequency and the second low band frequency, and wherein each of the plurality of low band dipoles has a plurality of low band dipole segments configured to be capacitively coupled to have a low impedance between the first low band frequency and the second low band frequency, and to have a high impedance between the first and the second high band frequency.

Dependencies are inferred from the claim text.

Facts

Application

17/328,636Filed 24 May 2021

Priority

18 May 2017

Published

9 Sep 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

H01Q 21/062
Two dimensional planar arrays: using dipole aerials
H01Q 5/307
Arrangements for providing operation on different wavebands: individual or coupled radiating elements, each element being fed in an unspecified way
H01Q 5/42
Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed…: using…
H01Q 9/28
With feed intermediate between the extremities of the antenna, e.g. centre-fed dipole: conical, cylindrical, cage, strip, gauze, or like elements…

Family

Application62/507,936Us provisional application · filed 18 May 2017

Application16/613,852Continuation · filed 15 Nov 2019

Application17/328,636Continuation

US 11,018,438 B2Related patent

US 11,431,105 B2Related patent

US 2020/0169002 A1Published application

US 2021/0280985 A1This patent

From the US filing history. Foreign family members aren’t listed.

Multi-band fast roll off antenna having multi-layer pcb-formed cloaked dipoles

Life of this patent

Multi-band fast roll off antenna having multi-layer pcb-formed cloaked dipoles

Life of this patent

Abstract

Claims33