The instant disclosure relates generally to communications systems and specifically to wearable communication pouches.
Hand-held (i.e. portable) communications systems, such as walkie-talkies and other portable radio transceivers, are typically used by military personnel, law enforcement officials, first responders, as well as civilians. However, such systems typically utilize one or more conspicuous antennas, such as whip antennas, which typically consist of a straight flexible metal wire or rod. The bottom end of whip antennas are coupled to the radio receiver, transmitter, or transceiver. Whip antennas are typically designed to be flexible to reduce breaking. However, such antennas are increasingly deployed in environments where identification of communications personnel and/or their locations may not be desired (e.g., military theaters and clandestine operations). Even more, such antennas are typically vulnerable to entanglement in foliage or debris, and damage in disaster and emergency, as well as high population density environments. Therefore, a communications solution that does not require whip antennas will be beneficial to consumers.
The descriptions of the various embodiments of the instant disclosure have been presented for purposes of illustration but are not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement over technologies found in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Certain terminology may be employed in the following description for convenience rather than for any limiting purpose. For example, the terms “forward” and “rearward,” “front” and “rear,” “right” and “left,” “upper” and “lower,” “up” and “bottom,” and “top” and “bottom” designate directions in the drawings to which reference is made, with the terms “inward,” “inner,” “interior,” or “inboard” and “outward,” “outer,” “exterior,” or “outboard” referring, respectively, to directions toward and away from the center of the referenced element, the terms “radial” or “horizontal” and “axial” or “vertical” referring, respectively, to directions or planes which are perpendicular, in the case of radial or horizontal, or parallel, in the case of axial or vertical, to the longitudinal central axis of the referenced element, and the terms “downstream” and “upstream” referring, respectively, to directions in and opposite that of fluid flow. Terminology of similar import other than the words specifically mentioned above likewise is to be considered as being used for purposes of convenience rather than in any limiting sense. Similarly, the terms “a” and “an” are construed to mean “at least one” or “one or more” etc. The term “distal” refers to items or components that are situated away from a point of reference (i.e., the opposite of proximate). The term “proximate” refers to items or components that are situated near a point of reference (i.e., the opposite of distal). The term “dynamically positionable” antennas elements refers to antenna elements that can be demountably coupled to the pouch at two or more different positions thereon (i.e., interchangeable, swappable, fungible).
In the figures, elements having an alphanumeric designation may be referenced herein collectively or in the alternative, as will be apparent from context, by the numeric portion of the designation only. Further, the constituent parts of various elements in the figures may be designated with separate reference numerals which shall be understood to refer to that constituent part of the element and not the element as a whole. General references, along with references to spaces, surfaces, dimensions, and extents, may be designated with arrows. Angles may be designated as “included” as measured relative to surfaces or axes of an element and as defining a space bounded internally within such element therebetween, or otherwise without such designation as being measured relative to surfaces or axes of an element and as defining a space bounded externally by or outside of such element therebetween. Generally, the measures of the angles stated are as determined relative to a common axis, which axis may be transposed in the figures for purposes of convenience in projecting the vertex of an angle defined between the axis and a surface which otherwise does not extend to the axis. The term “axis” may refer to a line or to a transverse plane through such line as will be apparent from context.
Hand-held (i.e. portable) communications systems, such as walkie-talkies and other portable radio transceivers (hereinafter “portable radios”), are typically used by military personnel, law enforcement officials, first responders, as well as civilians. However, such systems typically utilize one or more conspicuous antennas, such as whip antennas, which typically consist of a straight flexible metal wire or rod. The bottom end of whip antennas are conductively coupled to the communications systems (i.e., radio receiver, transmitter, or transceiver). Whip antennas are typically designed to be flexible to reduce breaking. However, such antennas are increasingly deployed in environments where identification of the communications personnel and/or their locations may not be desired (e.g., military theaters and clandestine operations). Even more, such antennas are typically vulnerable to entanglement in foliage or debris, and damage in disaster and emergency, as well as high population density environments.
Embodiments of the instant disclosure seek to provide wearable communications pouches that employ antenna elements having a reduced visual signature. Other aspects of the instant disclosure seek to provide wearable communications pouches that demountably couple to articles of clothing, garment items, and baggage items (e.g., armor plate carriers, backpacks, as well as similar garment items and baggage items). Additional aspects of the instant disclosure seek to provide wearable communications pouches that include modular antennas elements that are dynamically positionable (i.e., swappable, switchable, etc.).
Additional antenna elements 106 can be attached to the WCP 100 to change the RF radiation pattern of the WCP 100. For example, the antenna elements 106 having a particular operational frequency (e.g., frequency A) can be exchanged with other antenna elements 106 having a different operational frequency (e.g., frequency B). The fungibility of the antenna elements 106 allows the WCP 100 to generate or alter RF frequency coverage and RF radiation patterns thereof to meet individual needs, inclinations, and/or specifications. In addition, the quantity of the antenna elements 106 included in the WCP 100 can be varied according to user requirements. In certain embodiments, the WCP 100 includes at least one antenna attachment site 130 which receives a demountable antenna element 135. The demountable antenna elements 135 preferably “snap” on to the antenna attachment sites 130 (i.e., are demountably attached).
In other words, the demountable antenna elements 135 and the antenna attachment sites 130 demountably couple together when shifted in a common plane, which thereby forms a selective, intermitting, and conductive coupling therebetween. The communications devices 115, 120, and 125 can be any hand-held communications device known in the art, such as walkie-talkies and other portable radio transceivers that are typically used by military personnel, law enforcement officials, first responders, as well as civilians. In some embodiments, the communications devices 115, 120, and 125 operate on different operating frequencies. The antenna ports 110 can be any RF connector known in the art that supports one or more embodiments of the instant disclosure (e.g., SMA QMA, BNC, etc.).
For example, the communications devices 115, 120, and 125 include similar components having similar connectivities and functionalities. In still other embodiments, the hub 130 can is conductively coupled to antenna elements 140. The communications devices 110, 120, 125 are a portable communications device that send and/or receive radio transmissions with other communications devices. One or more of the communications device 110, 120, and 125 can be a plurality of devices interoperably connected to perform one or more functions, steps, and/or processes of a communications device known in the art.
In several embodiments, the communications devices 110, 120, and/or 125 send and/or receive data modulated via one or more communications protocols known in the art. For example, applicable communication protocols can include, but are not limited to, UHF, VHF, Long-Term Evolution (“LTE”), 3G, standards based on GSM/EDGE and/or UMTS/HSPA, Wi-Fi, IEEE 802.11 standards, GPSR, local area networking protocols, wide area networking protocols, Bluetooth, microwave, similar wireless communications protocols, or a combination of two or more thereof.
In certain embodiments, the communications devices 110, 120, 125 each operate on a unique radio frequency range. For example, the communications devices 110, 120, 125 may be configured to operate on the VHF (i.e. 30-300 MHz), UHF (i.e. 300 MHz to 3 GHz), GPSR radio frequency bands, respectively, and thereby allow the WCP 100 to exhibit multi-band/broadband functionality (discussed further below). The antenna ports 110 can include a fastening mechanism known in the art (e.g., thread, bayonet, braces, blind mate, etc.) and springs for a low ohmic electric contact while sparing the conductive surface, thus allowing very high mating cycles and reducing the insertion force.
Turning now to
The WCP 101 preferably shields the user's body from at least a portion of the RF signals that emanate therefrom, which reduces RF interference and improves signal quality. As illustrated in
Here, the antenna element 106 is positioned between the fabric layer 715 and the RF shielding layer 720. The RF shielding layer 720 is positioned between the antenna element 106 and the fabric layer 725. The RF shielding layer 720 reflects RF signals that emanate from the antenna element 106 towards the fabric layer 715 and thereby shield the user 730 from the offensive RF signals. Applicable RF shielding material includes, but is not limited to, RF shielding meshes, coatings, textiles, and foams (e.g., quarter inch closed-cell polypropylene foam). The RF shielding material 720 preferably physically separates antenna elements from user's body to reduce RF interference and improve signal quality. Although not shown, the multilayered component 735 can include additional or less layers that those depicted. For example, components of the WCP 101 that have antenna attachment sites 130 can also include the RF shielding layer 720 positioned thereunder and proximate thereto throughout at least a portion of the multilayered component 735. Even if the antenna element 106 or the antenna attachment site 130 is not present (e.g., as in the back panel 205), the multilayered component 735 can include the RF shielding layer 720 to provide additional RF shielding.
For example, the RF shielding material 720 can also be lined with and/or include conductive material, such as aluminum or copper foil, or material coated with (or combined with) graphene, silver, copper conductive ink, to provide additional RF isolation and RF shielding from the user 730 to reduce the specific absorption rate of the WCP 101. As such, the RF shielding layer 720 reflects RF radiation that emanates from the antenna element 106 away from the user 730 body. The back panel 205 is pivotably coupled to the front panel 200. The front panel 200 is positioned proximate to the back panel 205 in the “first closed state” and thereby covers the communications hub 105. In other words, the front panel 200 overlaps (i.e., covers) the back panel 205 when the WCP 101 is oriented in the “first closed state.”
The front panel 200 and the back panel 205 are preferably laterally and demountable coupled together via at least one second demountable fasteners 220 to further secure the communications devices 115, 120, and 125 as well as any of the demountable antenna elements 135 that are attached to antenna attachment sites 130 to protect them possible environmental hazards. Although, the second demountable fasteners 220 are depicted as buckles, they can be any demountable fastener known in the art that facilitates one or more embodiments of the instant disclosure. The back panel 205 can include an envelope 515 positioned opposite the communications hub 110 (i.e., positioned on opposing surfaces of the back panel 205). In certain embodiments, the WCP 101 attaches to garment items having shoulder straps, which include, but are not limited to, armor plate carriers and back packs. The WCP 101 can include a third demountable fastener 510 that is, for example, vertically positioned and affixed thereto. The third demountable fastener 510 is positioned opposite the communications hub 105 (i.e., on opposing surfaces). Although the third demountable fastener 510 is depicted as a zipper, the component can be any demountable fastener that allows the WCP 101 to demountably attach to garment items that are, for example, at least partially worn on the upper torso, in accordance with yet still other embodiments.
In preferred embodiments, each shoulder strap 210 is pivotably coupled to and extends from the back panel 205. Alternatively, the shoulder strap 210 can be pivotably coupled to extend from front panel 200. In certain embodiments, one or more of the shoulder straps 210 each includes an antenna attachment site 130 that receives a demountable antenna element 135. The demountable antenna element 135 is preferably fabricated using a conductive composition (discussed below).
In some aspects, the communications hub 105 is conductively coupled to each antenna attachment site 130 via a transmission line 750. The transmission line 750, for example, may be affixed to one or more internal and/or external surfaces of the WCP 100. In other aspects, the pairing element 740 and the antenna attachment site 130 demountably engage each other when shifted in a common plane, which thereby forms a selective, intermitting, and conductive coupling therebetween. In still other aspects, the pairing element 740 and the antenna attachment site 130 form a conductive hook-and-loop mating system when engaged. For example, individual hooks and loops can be formed using the conductive composition (discussed below) and applicable formation techniques known in the art.
As depicted in
The demountable antenna element 135 is preferably fabricated using the conductive composition (other conductive compositions may be utilized). The first portion 1605 and the second portion 1610 are demountably coupled together via a plurality of fourth demountable fasteners 1615. Although the fourth demountable fasteners 1615 are depicted as hook-and-loop fasteners (i.e., Velcro), the components can be any demountable fastener known in the art that facilitates one or more embodiments of the instant disclosure. Although, the plurality of fourth demountable fasteners 1615 are depicted as being peripherally positioned on the first portion 1605 and the second portion 1610, the components can have any positioning that supports one or more embodiments of the instant disclosure.
Although
In preferred embodiments, the first demountable fastener 605 includes a buckle 620 affixed to an elastic cord 625 at one end and a strap 630 at the opposite end to allow the first demountable fastener 605 to adjust to and secure portable radios of any size. For example, the first demountable fastener 605 vertically orients the portable radios. In other embodiments, the first demountable 605 horizontally orients the portable radios. In certain embodiments, the front panel 200 includes antenna attachment sites 130 (discussed below) to receive demountable antenna elements 135.
In preferred embodiments, the antenna elements 106 and the demountable antenna elements 135 are applied (e.g., screen printing, coating, similar application methods) on a substrate (e.g., polyethylene terephthalate and similar materials) using a graphene polymer-based composition (“conductive composition”) wherein individual fully exfoliated sheets of graphene (“graphene sheets”) are mixed and disbursed throughout the polymer matrix. In some embodiments, the antenna elements 106 are applied (e.g., printed) on a surface of the WCP 101, which acts the substrate. The graphene sheets are approximately 1 nm or less thick and have a “platey” (e.g., two-dimensional) structure. To be sure, although graphene sheets, graphite, and carbon nanotubes are allotropes of carbon, they are not identical in structure or composition and each exhibits mutually exclusive properties.
The antenna elements 106 and the detachable antenna element 135 each have a reduced visual signature (e.g., less than 2 mm thick) to address identification and entanglement issues associated with traditional antenna elements (e.g., whip antennas). Here, the aforementioned antenna elements extend no more than 2 mm from the surface of the WCP 100 and have a reduced probability of entanglement with structures external to the WCP 100. In other embodiments, the aforementioned antenna elements exhibit a gain greater than 0 dB. The detachable antenna element 135 are preferably positioned at various locations on the WCP 100 to achieve an omnidirectional RF radiation pattern that body worn antennas known in the art cannot achieve (such as the radio mounted whip antenna). As depicted in
The conductive composition preferably includes one or more polymers and fully exfoliated single sheets of graphene that form a three dimensional percolated network within the polymer matrix and have nanoscale separation between the individual graphene sheets. In other embodiments, the antenna elements are printed using other polymer-based conductive inks that contain metals (e.g., silver, copper, gold, nickel, other metals, or a combination of two or more thereof). An increase in resistance results in a decrease in antenna element performance efficiency. As used herein, “antenna efficiency” is defined as the ratio of power delivered to antenna elements versus the power radiated therefrom. Hence, an increase in electrical resistance decreases the amount of power available for radiation, which thereby decreases antenna element performance efficiency.
As previously discussed, the antenna element 106 is conductively coupled to the antenna port 110. In the instant embodiment, the WCP 2000 can be oriented in a “first open state” or a “first closed state.” In the “first open state,” the cover 2010 is positioned distal (i.e., pivoted away from) to the opening 2015 and thereby exposes the opening 2015. In the “first closed state,” the cover 2010 is positioned proximate to and on top of the opening 2015. In preferred embodiments, the cover 2010 includes a first portion 2405, a second portion 2305, and a third portion 2310. The first portion 2405, the second portion 2305, and the third portion 2310 are each rotatably affixed to the back panel 2200. The third portion 2310 is positioned between the first portion 2405 and the second portion 2305. Although the first portion 2405 is preferably positioned above the second portion 2305 and the third portion 2310, these components can have any positioning that supports an embodiment of the instant disclosure.
The second portion 2305 preferably includes the communications hub 105, which allows the third portion 2310 and the first portion 2405 to selectively cover and protect the communications hub 105. The first portion 2405, which is the exposed layer of the cover 2010, includes the antenna element 106 (e.g., embedded therein). As illustrated in
For example, the third portion 2310 includes at least one antenna attachment site 130, which is oriented away from the communications hub 105 when the third portion 2310 is positioned on and proximate to the second portion 2305 (i.e., when the WCP 2000 is oriented in the “second closed state”). The antenna attachment site 130 is affixed to the top of the third portion 2310. Each antenna attachment site 130 receives a demountable antenna element 135 and coupled together as discussed above. The WCP 2000 also includes a first demountable fastener 2025 that demountably couple the main body 2005 and the cover 2010 together and thereby secures the contents (e.g., portable radios) of the main body 2005. For example, the first demountable fastener 2025 shares one or more aspects of the first demountable fastener 605 (discussed above). As depicted in
The third demountable fastener 2020 demountably affixes the WCP 2000 to a garment item (discussed above) via a complementary structure(s) affixed to the garment item. Although the third demountable fastener 2020 is illustrated as being laterally affixed on the back panel 2200, the component can have any orientation and/or positioning that will facilitate an embodiment of the instant disclosure. The third demountable fastener 2020 shares one or more aspects, functions, components with the second demountable fastener 220. The WCP 2000 can further include a second demountable fastener 2415 that demountably couples the first portion 2405 and the third portion 2310 together and thereby secures and/or protects the demountable antenna elements 135 affixed to the third portion 2310. Although the second demountably fastener 2415 are preferably hook-and-loop (i.e., Velcro) fasteners, they can be any demountable fastener known in the art (e.g., snap fasteners) that facilitate an embodiment of the instant disclosure.
As various modifications could be made in the constructions and methods herein described and illustrated without departing from the scope of the invention, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative rather than limiting. Thus the breadth and scope of the instant disclosure should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims appended hereto and their equivalents.
This invention was made with government support under a project level agreement with the Air Force Research Laboratory, Number Project Announcement No. RIK-OTA-20-GWA. The U.S. Government has certain rights in this invention.