US 12,113,281 B2Granted

Broadband antenna assembly

AssigneeNantenna LLC

InventorGary L. Bastin

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Abstract

The teachings of the present application generally for an ultra-high frequency (UHF) antenna assembly which provides for a smaller package size with the same or better efficiency as a much larger antenna, particularly between 100 MHz to 500 MHZ. Particularly, through the combination of components and structures for implementing frequency selective surfaces (FSS) and high impedance structures (HIS) in combination with an anisotropic magneto-dielectric material, the present teachings provide for the use of both lower and higher frequency techniques through the operational frequency band and miniaturization, accurately improving the performance of UHF satellite communication antennas. Specifically improving performance in narrowband, with increases in efficiency, bandwidth, and lowered elevation angle radiation characteristics.

Claims20

Dependent claims

An antenna assembly comprising:

a substrate layer having a first dielectric material that is an anisotropic magneto-dielectric material;
and
a composite layer spaced apart from the substrate layer, the composite layer including:
a first radiating element and a second radiating element on a top surface of the composite layer, the first radiating element and the second radiating element each include a transmission line folded into a stepped meander line, the stepped meander line extending between a first location and a second location along the top surface;
a ground plane forming a bottom surface of the composite layer;
a second dielectric material between the first and the second radiating element and the ground plane;
wherein the stepped meander line includes a plurality of steps, each of the plurality of steps including a first elongated section and a second elongated section connected by a transition segment, each of the transition segments are arranged on alternating outer edges of the stepped meander line with each of the transition segments being parallel to one another.

4 more elements

An antenna assembly with an operational frequency band between 100 MHz and 500 Mhz, the antenna assembly comprising:

a base;
a substrate layer disposed on the base, the substrate layer having an anisotropic magneto-dielectric material;
and
a composite layer spaced apart from the substrate layer, the composite layer including:
two radiating elements on a top surface of the composite layer, each of the radiating elements each include a stepped meander line with an exponential parametric tapered shape;
a ground plane forming a bottom surface of composite layer, the ground plane defining a plurality of bandgaps forming a frequency selective surface;
a dielectric material between the two radiating elements and the ground plane;
wherein exponential parametric taper of the two radiating elements reduce transmission speed of energy while widening an operational frequency band working in conjunction with the plurality of bandgaps to electromagnetically decouple the two radiating elements with respect to each other throughout the operational frequency band, providing the antenna assembly with a physically small size relative to the operational frequency band.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/681,417Filed 8 Aug 2022 · us provisional application
Priority: 6 Aug 2021
Published: US 2024/0275070 A115 Aug 2024
Granted: 8 Oct 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H01Q 19/108
Using reflecting surfaces: combination of a dipole with a plane reflecting surface
H01Q 9/285
Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having…:…
H01Q 15/006
Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering…:…
H01Q 19/185
Having two or more spaced reflecting surfaces: wherein the surfaces are plane

Family

Application63/230,093Us provisional application · filed 6 Aug 2021
US 2024/0275070 A1Pre-grant publication · published 15 Aug 2024
US 12,113,281 B2This patent

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

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