Patent Description:
Smoking articles, such as cigarettes, cigars and the like burn tobacco during use to create tobacco smoke. Attempts have been made to provide alternatives to these articles by creating products that release compounds without combusting. For example, tobacco heating devices heat an aerosol provision substrate such as tobacco to form an aerosol by heating, but not burning, the substrate. An aerosol provision device, such as aerosol provision devices known from <CIT>, <CIT> and <CIT>, may be provided with a means for communication, for example for communication with a mobile communication device of a user of the device. There remains a need for further developments in this field.

In a first aspect, this specification describes a metal housing for an aerosol provision device (e.g. a housing for an electronic smoking article), the metal housing comprising: a printed circuit board mounted within the metal housing; a first contact spring providing an electrical connection between a first connection point on an inside of the metal housing and a ground connection of the printed circuit board; and a second contact spring providing an electrical connection between a second connection point on the inside surface of the metal housing and an antenna signal output for providing an antenna signal for transmission by the metal housing (such that the metal housing may be used as an antenna, such as a Bluetooth or WiFi antenna), wherein the metal housing comprises a radiating conductor element extending from a first surface element to a second surface element, wherein the first and second connection points are provided on the radiating conductor element and wherein a distance between the first and second surface elements is at least one quarter of a wavelength of the antenna signal transmission.

In some example embodiments, the radiating conductor element is an elliptical cylindrical radiating conductor element, the first surface element is a first elliptical surface element and the second surface element is a second elliptical surface element.

The metal housing may further comprise a signal feed source element and an antenna signal terminal, wherein the antenna signal terminal is connected to the second connection point and the signal feed source element is connected to the antenna signal terminal by the second contact spring.

The metal housing may further comprise an impedance matching circuit, which impedance matching circuit may be adjustable. The impedance matching circuit may be provided on the printed circuit board.

The metal housing may further comprise a control module for generating the antenna signal for transmission. The control module may be configured to cause the transmission of data (e.g. device usage data, battery levels etc.). These data may be collected and used (e.g. displayed or stored) by a user's mobile communication device (e.g. an application on the user's phone that is in communication with the aerosol provision device).

The metal housing may fully enclose the printed circuit board.

In a second aspect, this specification describes a method comprising: inserting a printed circuit board into a metal housing for an aerosol provision device such that a first contact spring of the printed circuit board provides an electrical connection between a first connection point on an inside of the metal housing and a ground connection of the printed circuit board and a second contact spring of the printed circuit board provides an electrical connection between a second connection point on the inside surface of the metal housing and an antenna signal output for providing an antenna signal for transmission (e.g. a Bluetooth signal or a WiFi signal) by the metal housing, wherein the metal housing comprises a radiating conductor element extending from a first surface element to a second surface element, wherein the first and second connection points are provided on the radiating conductor element and wherein a distance between the first and second surface elements is at least one quarter of a wavelength of the antenna signal transmission. The antenna signal may be used for communications with a mobile communication device. Once inserted, the printed circuit board may be fully enclosed by the metal housing.

The method may further comprise matching an impedance between the antenna signal generating circuit and the metal housing and may, for example, include adjusting the impedance matching.

The method may further comprise generating the antenna signal for transmission.

The antenna signal may be used for locating the aerosol provision device.

In a third aspect, this specification describes an aerosol provision device (e.g. a non-combustible aerosol provision device) comprising a metal housing including any of the features of the first aspect.

In a fourth aspect, this specification describes an electronic smoking article comprising an aerosol provision device of the third aspect.

In a fifth aspect, this specification describes a method comprising using an aerosol provision device of the third aspect or an electronic smoking article of the fourth aspect for communications with a mobile communication device.

In a sixth aspect, this specification describes a method comprising: receiving communications at a mobile communication device from an aerosol provision device of the third aspect or an electronic smoking article of the fourth aspect; and determining a location of said aerosol provision device or said electronic smoking article based on the received communications. The method may further comprise plotting the determined location on a display of said mobile communication device.

In a seventh aspect, this specification describes computer-readable instructions which, when executed by computing apparatus, cause the computing apparatus to perform any method as described with reference to the second, fifth or sixth aspects.

In an eighth aspect, this specification describes a kit of parts comprising an article (e.g. a removable article comprising an aerosol generating material) for use in a non-combustible aerosol generating system, wherein the non-combustible aerosol generating system comprises a metal housing including any of the features of the first aspect described above or a device or system including any of the features of the third or fourth aspects described above.

Example embodiments will now be described, by way of example only, with reference to the following schematic drawings, in which:.

As used herein, the term "delivery system" is intended to encompass systems that deliver a substance to a user, and includes:.

According to the present disclosure, a "combustible" aerosol provision system is one where a constituent aerosolisable material of the aerosol provision system (or component thereof) is combusted or burned in order to facilitate delivery to a user.

According to the present disclosure, a "non-combustible" aerosol provision system is one where a constituent aerosolisable material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery to a user. In embodiments described herein, the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.

In one embodiment, the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosolisable material is not a requirement.

In one embodiment, the non-combustible aerosol provision system is a tobacco heating system, also known as a heat-not-burn system.

In one embodiment, the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosolisable materials, one or a plurality of which may be heated. Each of the aerosolisable materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine. In one embodiment, the hybrid system comprises a liquid or gel aerosolisable material and a solid aerosolisable material. The solid aerosolisable material may comprise, for example, tobacco or a non-tobacco product.

Typically, the non-combustible aerosol provision system may comprise a non-combustible aerosol provision device and an article for use with the non-combustible aerosol provision system. However, it is envisaged that articles which themselves comprise a means for powering an aerosol generating component may themselves form the non-combustible aerosol provision system.

In one embodiment, the non-combustible aerosol provision device may comprise a power source and a controller. The power source may be an electric power source or an exothermic power source. In one embodiment, the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosolisable material or heat transfer material in proximity to the exothermic power source. In one embodiment, the power source, such as an exothermic power source, is provided in the article so as to form the non-combustible aerosol provision.

In one embodiment, the article for use with the non-combustible aerosol provision device may comprise an aerosolisable material, an aerosol generating component, an aerosol generating area, a mouthpiece, and/or an area for receiving aerosolisable material.

In one embodiment, the aerosol generating component is a heater capable of interacting with the aerosolisable material so as to release one or more volatiles from the aerosolisable material to form an aerosol. In one embodiment, the aerosol generating component is capable of generating an aerosol from the aerosolisable material without heating. For example, the aerosol generating component may be capable of generating an aerosol from the aerosolisable material without applying heat thereto, for example via one or more of vibrational, mechanical, pressurisation or electrostatic means.

In one embodiment, the aerosolisable material may comprise an active material, an aerosol forming material and optionally one or more functional materials. The active material may comprise nicotine (optionally contained in tobacco or a tobacco derivative) or one or more other non-olfactory physiologically active materials. A non-olfactory physiologically active material is a material which is included in the aerosolisable material in order to achieve a physiological response other than olfactory perception. The active substance as used herein may be a physiologically active material, which is a material intended to achieve or enhance a physiological response. The active substance may for example be selected from nutraceuticals, nootropics, psychoactives. The active substance may be naturally occurring or synthetically obtained. The active substance may comprise for example nicotine, caffeine, taurine, theine, vitamins such as B6 or B12 or C, melatonin, cannabinoids, or constituents, derivatives, or combinations thereof. The active substance may comprise one or more constituents, derivatives or extracts of tobacco, cannabis or another botanical. In some embodiments, the active substance comprises nicotine. In some embodiments, the active substance comprises caffeine, melatonin or vitamin B12.

The aerosol forming material may comprise one or more of glycerine, glycerol,propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, <NUM>,<NUM>-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.

The one or more functional materials may comprise one or more of flavours, carriers, pH regulators, stabilizers, and/or antioxidants.

In one embodiment, the article for use with the non-combustible aerosol provision device may comprise aerosolisable material or an area for receiving aerosolisable material. In one embodiment, the article for use with the non-combustible aerosol provision device may comprise a mouthpiece. The area for receiving aerosolisable material may be a storage area for storing aerosolisable material. For example, the storage area may be a reservoir. In one embodiment, the area for receiving aerosolisable material may be separate from, or combined with, an aerosol generating area.

Aerosolisable material, which also may be referred to herein as aerosol generating material, is material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosolisable material may, for example, be in the form of a solid, liquid or gel which may or may not contain nicotine and/or flavourants. In some embodiments, the aerosolisable material may comprise an "amorphous solid", which may alternatively be referred to as a "monolithic solid" (i.e. non-fibrous). In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it.

The aerosolisable material may be present on a substrate. The substrate may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted aerosolisable material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy.

A consumable is an article comprising or consisting of aerosol-generating material, part or all of which is intended to be consumed during use by a user. A consumable may comprise one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and/or an aerosol-modifying agent. A consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol-generating material to generate aerosol in use. The heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.

A susceptor is a material that is heatable by penetration with a varying magnetic field, such as an alternating magnetic field. The susceptor may be an electrically-conductive material, so that penetration thereof with a varying magnetic field causes induction heating of the heating material. The heating material may be magnetic material, so that penetration thereof with a varying magnetic field causes magnetic hysteresis heating of the heating material. The susceptor may be both electrically-conductive and magnetic, so that the susceptor is heatable by both heating mechanisms. The device that is configured to generate the varying magnetic field is referred to as a magnetic field generator, herein.

<FIG> is a block diagram of a non-combustible aerosol provision device, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment. The aerosol provision device <NUM> (such as an e-cigarette) comprises a mouthpiece <NUM>, a cartridge or pod <NUM>, an atomizer <NUM>, a sensor <NUM>, a control module <NUM>, a battery <NUM> (e.g. a rechargeable lithium battery) and an LED <NUM> (or some other illumination device). The control module <NUM> may comprise a microprocessor.

In a use of the aerosol provision device <NUM>, a user inhales from the mouthpiece <NUM>. The cartridge of pod <NUM> may store a liquid solution (e.g. of glycerol, flavourings and nicotine).

The sensor <NUM> may be an air flow sensor configured to sense the air flow inhaled by a user and may provide an input to the control module <NUM>. Functions of the control module <NUM> may include controlling the atomizer <NUM> and the LED <NUM>. The device <NUM> may use the atomizer <NUM> to seek to simulate a smoke-like vapour flavour. The LED indicator light <NUM> may illuminate when used, simulating the fire light during smoking.

The control module <NUM> may include a communications means, such as a Bluetooth chip or WiFi chip. The communication means may be integrated into a microprocessor of the control module <NUM>. An antenna (discussed in detail below) enables the communications means to communicate with a remote device (such as a mobile phone, a mobile communication device, a laptop, a computer or some other device), to enable information to be provided to a user.

As discussed in detail below, the antenna may be provided by a metal shell or housing (e.g. a shell, housing or sleeve of the aerosol provision device <NUM>). The antenna may be planar inverted F (PIFA) antenna.

The aerosol provision device <NUM> may include a connector, such as a USB connector (not shown) that enables a connection to be made to a power source for charging a battery <NUM>.

The aerosol provision device <NUM> is provided by way of example only; many variants and alternatives are possible.

<FIG> is a block diagram of a system, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment. The system <NUM> comprises the aerosol provision device <NUM> and a remote device <NUM> (i.e. remote from the aerosol provision device). The remote device <NUM> may, for example, be a mobile phone, a mobile communication device, a laptop, a computer or a similar device, and may be owned by a user of the aerosol provision device <NUM>.

As indicated above (and discussed in further detail below), the aerosol provision device <NUM> has an output that transmits a signal (such as a Bluetooth signal or a WiFi signal). The transmitted signal can be detected by the remote device <NUM> such that the aerosol provision device <NUM> can communicate with the remote device <NUM>. In some example embodiments, the remote device <NUM> is able to transmit to the aerosol provision device <NUM> (as indicated by the dotted line in the system <NUM>), but this is not essential to all embodiments.

The signal transmitted from the aerosol provision device <NUM> to the remote device <NUM> may be used to transmit information such as how many e-cigarettes a user puffs or the amount of remaining liquid per day. The skilled person will be aware of many other examples of data that may be transmitted from the aerosol provision device <NUM> to the remote device <NUM> (or, indeed, data that may be transmitted from the remote device <NUM> to the aerosol provision device <NUM>).

<FIG> is a block diagram of a housing, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment. The housing <NUM> comprises an outer sleeve <NUM>, such as an aluminium sleeve, which sleeve may provide the exterior of at least some of the aerosol provision device <NUM> described above. Note that the housing <NUM> may be used with alternative aerosol provisioning or generating devices and electronic smoking articles.

As shown in <FIG>, a printed circuit board <NUM> and a battery <NUM> are mounted within the metal housing <NUM>. The electronic components of the control module <NUM> may be provided on the printed circuit board <NUM>. Other components may also be provided (such as the atomiser <NUM>). Note that although the battery <NUM> is shown below the printed circuit board <NUM>, this is just one example implementation. The printed circuit board and the battery may, for example, be provided side-by-side.

A first contact spring 35a provides an electrical connection between a first connection point on an inside of the sleeve <NUM> and a ground connection of the printed circuit board. Similarly, a second contact spring 35b provides an electrical connection between a second connection point on the inside surface of the sleeve <NUM> and an antenna signal output for providing an antenna signal for transmission by the metal housing (such that the metal housing <NUM> can be used as an antenna).

A plurality of circuit elements, indicated generally by the reference numeral <NUM>, are shown on the printed circuit board <NUM>, as discussed further below.

<FIG> is a block diagram of a housing, indicated generally by the reference numeral <NUM>, in accordance with an example that does not have all the claimed features. The housing <NUM> is an example implementation of the housing <NUM> described above. The housing <NUM> may be a sleeve. The housing <NUM> may be an elliptical cylindrical shape and may be resilient such that there is some flexibility in the shape of the housing. The housing <NUM> may be shaped dependent on a shape of the aerosol provision device <NUM> (and may, for example, have a circular, rectangular, elliptical, diamond or any other shape).

The housing <NUM> comprises a signal feed source element <NUM>, an antenna signal terminal <NUM>, a radiating conductor element <NUM>, a first surface element <NUM>, a second surface element <NUM>, a metal ground plane element <NUM> and a metal dome element <NUM>. The radiating conducting element <NUM> extends from the first surface element <NUM> to the second surface element <NUM>. A distance between the first and second surface elements is at least one quarter of a wavelength of the antenna signal transmission, such that the antenna signal transmission has an acceptable efficiency.

Although not shown in <FIG> the first and second connection points of the metal housing referred to above with respect to <FIG> are provided on the radiating conductor element <NUM>.

In the specific configuration shown in <FIG>, the radiating conductor element <NUM> is an elliptical cylindrical radiating conductor element. Similarly, the first and second surface elements <NUM> and <NUM> are elliptical surface elements. However, this is not essential to all example embodiments. The housing <NUM> may be shaped dependent on a shape of the aerosol provision device <NUM> (and may, for example, have a circular, rectangular, elliptical, diamond or any other shape). Similarly, the radiating conductor element <NUM> and the first and second surface elements <NUM> and <NUM> may be shaped based on the shape of the housing <NUM> and may therefore have a circular, rectangular, elliptical, diamond or any other shape.

The signal feed source element <NUM> is connected to the antenna signal terminal <NUM> and the antenna signal terminal <NUM> is connected to the radiating conductor element <NUM>. The antenna signal terminal <NUM> may be connected to the second connection point described above. More specifically, the signal feed source element <NUM> may be connected to the antenna signal terminal <NUM> or the radiating conductor element <NUM> by the second contact spring 35b described above.

The radiating conductor element <NUM> covers the metal ground plane element <NUM>. The metal ground plane element <NUM> can be provided with a Bluetooth chip or a WiFi chip, a battery, a microprocessor, air flow sensors, LED indicators and other components.

Thus, the housing <NUM> may enclose some or all of the elements of the aerosol provision device <NUM> described above. (Note that some of the element of the aerosol provision device <NUM> may be provided outside the housing <NUM> and may, for example, be connected to an exterior of the housing <NUM>.

As shown in <FIG>, one end of the metal dome element <NUM> is connected to the radiating conductor element <NUM>, and the other end is connected to the metal ground plane element <NUM> which forming a ground, the electrical characteristic is zero ohm. In fact, the metal dome element <NUM> can be replaced by a contact spring, pogo pin, thimble or similar element. The metal dome element <NUM> is therefore an electrical conductor that electrically connects the radiating conductor element <NUM> and the metal ground plane element <NUM>. The impedance matching of the antenna can be adjusted by adjusting the distance between the position of the signal feed source element <NUM> and the position of the metal dome element <NUM> (e.g. by adjusting the distance between the first and second connection points described above). The signal feed source element <NUM> at a resonance point impedance (resistance) of <NUM>Ω, and the reactance should be close to zero, which can achieve good impedance matching and can thereby stimulate the maximum electromagnetic radiation transmission signal. The first surface element <NUM> and the second surface element <NUM>, both of which are made of electrical materials, can be metal conductors or plastic materials.

The radiating conductor element <NUM> can excite a first resonance mode frequency, when the length of the first surface element <NUM> extending from the radiating conductor element <NUM> to the second surface element <NUM> is a quarter wavelength of the transmission. Similarly, the radiating conductor element <NUM> can excite a second resonance mode frequency, when the length of the first surface element <NUM> extending from the radiating conductor element <NUM> to the second surface element <NUM> is three-quarters of the wavelength of transmission. Finally, the radiating conductor element <NUM> can excite a third resonance mode frequency, when the length of the first surface element <NUM> extending from the radiating conductor element <NUM> to the second surface element <NUM> is five-quarters of the wavelength of transmission. Of course, other resonance modes (e.g. at longer wavelengths) are also possible. Note that in some example embodiments, the second resonance mode frequency may be the preferred transmission mode (as discussed further below).

A distance between the first and second surface elements may be set at one quarter of a wavelength of the antenna signal transmission, as this is a point of high efficiency of the antenna signal transmission. In some example embodiments, there is insufficient design freedom to set the distance between the first and second surface elements with precision. In such cases, it may be sufficient that the distance between the first and second surface elements is at least one quarter of a wavelength of the antenna signal transmission.

A number of variants to the housing <NUM> are possible. For example, the first surface element <NUM> and the second surface element <NUM> may be provided with holes in the surface for some functions such as LED lights, buttons, air inlets or charging docks.

<FIG> is a flow chart showing an algorithm, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment.

The algorithm <NUM> starts at operation <NUM>, where the printed circuit board <NUM> is inserted into the metal housing <NUM> (or the housing <NUM>).

At operation <NUM>, the insertion of the printed circuit board <NUM> continues until the first contact spring 35a and the second contact spring 35b contact first and second connection points on the inside of the metal housing respectively. In this configuration, the first contact spring 35a provides an electrical connection between the first connection point and a ground connection of the printed circuit board and the second contact spring 35b provides an electrical connection between the second connection point and an antenna signal output for providing an antenna signal for transmission by the metal housing.

When the algorithm <NUM> is complete, the printed circuit board <NUM> is fully enclosed within the metal housing <NUM> or <NUM>.

<FIG> is a plot, indicated generally by the reference numeral <NUM>, showing functionality in accordance with an example embodiment.

The plot <NUM> shows a measured reflection loss (S11) for transmissions made using the metal housing <NUM> as an antenna. The plot <NUM> clearly shows frequencies at which the loss decreases substantially, these are indicated as a first resonance mode frequency <NUM>, a second resonance mode frequency <NUM> and a third resonance mode frequency <NUM>. The centre frequency of the first resonance mode frequency <NUM> is <NUM>, the centre frequency of the second resonance mode frequency <NUM> is <NUM> and centre frequency of the three-resonance mode frequency <NUM> is <NUM>. The second-resonance mode frequency <NUM> covers the wireless Bluetooth communication frequency and the WiFi <NUM> communication frequency. Accordingly, the metal housing <NUM> may use the second resonance mode frequency <NUM> for Bluetooth or WiFi transmissions.

In one example embodiment, in the first resonance mode, the length of the first surface element <NUM> extending from the radiating conductor element <NUM> to the second surface element <NUM> is one quarter of the wavelength of transmission, in the second resonance mode, that length may be three-quarters of the wavelength of transmission, and in the third resonance mode, that length may be five-quarters of the wavelength of transmission.

In the event of a Bluetooth or WiFi signal being transmitted at about <NUM> (having a wavelength of the order of <NUM> centimetres), the first and second surface elements may be separated by a distance of the order of <NUM> centimetres in order to operate in the second resonance mode.

The structure of the housing <NUM> may be adjustable (e.g. during a design phase). For example one or more of the shape, length or thickness of one or more of the radiating conductor element <NUM>, the first surface element <NUM> and the second surface element <NUM> may be adjustable. Such adjustments may have an impact of the frequencies at which the first, second and third resonance modes occur.

<FIG> is a plot, indicated generally by the reference numeral <NUM>, showing functionality in accordance with an example embodiment. The plot <NUM> shows an efficiency diagram of the second resonance mode antenna.

<FIG> is a block diagram of a circuit, indicated generally by the reference numeral <NUM>, used in an example embodiment.

The circuit <NUM> comprises a control module <NUM>, an impedance matching circuit <NUM>, a first connection point <NUM> and a second connection point <NUM>. The control module <NUM> and the impedance matching circuit <NUM> may be formed from the circuit elements <NUM> on the printed circuit board <NUM> described above.

The control module <NUM> is used to generate the antenna signal for transmission. The control module <NUM> may, for example, be configured to transmit data from the aerosol provision device <NUM> to the remote device <NUM> described above. By way of example, data such as aerosol device usage data, battery level etc. could be transmitted. These data may be collected and used (e.g. displayed or stored) at the remove device <NUM>. For example, the remote device <NUM> may be a mobile phone having an application that can be used to display information relating to the aerosol provision device <NUM>.

The first and second connection points <NUM> and <NUM> are the first and second connection points referred to in the algorithm <NUM> discussed above. Thus, when the printed circuit board is fully inserted, the first contact spring 35a connects the first connection point <NUM> to ground and the second contact spring 35b connects the output of the impedance matching circuit <NUM> to the second connection point <NUM>.

Thus, the control module <NUM> can make use of the first and second connection points <NUM> and <NUM> for the transmission of an antenna signal (e.g. Bluetooth signal or a WiFi signal).

The algorithm <NUM> starts at operation <NUM>, wherein an antenna signal is generated. As discussed above, the antenna signal may be generated by the control module <NUM>.

At operation <NUM>, impedance matching is provided between the antenna signal generating circuit (the control module <NUM>) and the transmitting antenna (the metal housing <NUM> or <NUM>). The impedance matching is implemented by the impedance matching circuit <NUM>.

At operation <NUM>, the signal is transmitted, using the metal housing as the antenna. The transmission may take the form of a Bluetooth signal or a WiFi signal.

The first and second connection points <NUM> and <NUM> are provided on the inside surface of the metal housing <NUM> or <NUM> and may be separated by a defined multiple of a wavelength of transmission of the antenna signal (e.g. one quarter, three-quarters or five-quarters of the wavelength of transmission).

<FIG> is a block diagram of an antenna arrangement, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment. The antenna arrangement is a planar inverter F-antenna; other antenna arrangements could be used in other example embodiments.

The antenna arrangement <NUM> includes a signal node <NUM> (such as the signal feed source element <NUM> described above) a conductor <NUM> (such as the radiating conductor element <NUM> described above) and a ground connection <NUM>.

The ground connection <NUM> is connected to the conductor <NUM>, for example using a spring such as the first contact spring 35a described above.

The signal node <NUM> is connected to the conductor <NUM>, for example using a spring such as the second contact spring 35b described above.

As discussed above with reference to <FIG>, an antenna signal may be sent from an aerosol provision device <NUM> (such as an electronic smoking article) to a remote device <NUM> (such as a mobile communication device). The remote device may use the data in many different ways.

By way of example, <FIG> is a flow chart showing an algorithm, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment. The algorithm <NUM> shows one example use of data that may be obtained by the remote device <NUM> from the aerosol provision device <NUM>.

The algorithm <NUM> starts at operation <NUM>, where a signal is received at the remote device <NUM> or some other mobile communication device from the aerosol provision device <NUM>, an electronic smoking article or some similar device.

At operation <NUM>, the location of said aerosol provision device, electronic smoking article or similar device is determined based on the received communications. The location determination may take the form of determining the location of the transmission relative to the location of the reception.

At optional operation <NUM>, the location determined in operation <NUM> may be plotted, for example on a display of the remote device or mobile communication device.

<FIG> shows an example user interface, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment. The user interface <NUM> may be output by the remote device <NUM> or by some other mobile communication device.

The user interface shows a user location (e.g. a location of the remote device <NUM>) together with an indicator of the position of the aerosol provision device <NUM> (marked with an "X" in the user interface <NUM>).

Of course, the user interface <NUM> is provided by way of example only; many alternative display configuration could be provided, including displaying other forms of data.

As discussed above, the aerosol provision device <NUM> is described by way of example only; many variants and alternatives are possible. By way of example, <FIG> is a block diagram of a non-combustible aerosol provision device, indicated generally by the reference numeral <NUM>, in accordance with an example embodiment. The aerosol provision device <NUM> is an example implementation of the aerosol provision device <NUM> described above.

<FIG> shows the aerosol provision device <NUM> without an outer cover. The aerosol provision device <NUM> may comprise a replaceable article <NUM> that may be inserted in the aerosol provision device <NUM> to enable heating of the article <NUM>. The aerosol provision device <NUM> further comprises an activation switch <NUM> that may be used for switching on or switching off the aerosol provision device <NUM> and a plurality of heating elements 203a, 203b and 203c, and one or more air tube extenders <NUM> and <NUM>. The one or more air tube extenders <NUM> and <NUM> may be optional.

The heating elements 203a, 203b and 203c may be heaters that directly heat the article <NUM>. Alternatively, the heating elements 203a, 203b and 203c may be inductive heating elements that are configured to interact with a susceptor comprised within the article <NUM> (or provided elsewhere). The use of three heating elements 203a, 203b and 203c is not essential to all example embodiments. Thus, the aerosol provision device <NUM> may comprise one or more heating elements.

Claim 1:
A metal housing (<NUM>, <NUM>) for an aerosol provision device, the metal housing comprising:
a printed circuit board (<NUM>) mounted within the metal housing;
a first contact spring (35a) providing an electrical connection between a first connection point on an inside of the metal housing and a ground connection of the printed circuit board; and
a second contact spring (35b) providing an electrical connection between a second connection point on the inside surface of the metal housing and an antenna signal output for providing an antenna signal for transmission by the metal housing,
wherein the metal housing comprises a radiating conductor element (<NUM>) extending from a first surface element (<NUM>) to a second surface element (<NUM>), wherein the first and second connection points are provided on the radiating conductor element and wherein a distance between the first and second surface elements is at least one quarter of a wavelength of the antenna signal transmission.