Abstract: A light board structure includes a board body, a wireless transceiver module and a light-emitting member. The wireless transceiver module and the light-emitting member are both installed on the board body. The wireless transceiver module has a feeder wire and a ground wire. The board body has a collision avoidance area, which runs through the board body and disposed to avoid collision with the wireless transceiver module and the light-emitting member. The feeder wire and the ground wire are positioned on a side of the collision avoidance area. The collision avoidance area is configured to emit a radio wave, and solve a problem that the communication distance of a light board structure is short. A light fixture having the light board structure includes an installation cavity. The collision avoidance area of the light board structure matches an inner wall of the installation cavity to form a collision avoidance channel.

Abstract: Systems and methods which leverage the wireless communication capability present in wireless-enabled luminaires where the lamps include a short-range wireless transceiver and can be controlled by a smart appliance. The wireless capability of a luminaire may be paired with a compatible wireless interface system (e.g., adapter system) that allows for control of the luminaire via plug-in or hard-wired photocontrols and wireless network lamp control nodes. An adapter system may be provided that replaces a standard wired receptacle of a luminaire. The adapter system may include a wired interface to the luminaire which provides power to the wireless adapter system. The wireless adapter system may include a receptacle interface that receives a plug of a control node, such as photocontrol or a networked control node. The wireless adapter system may also include a wireless interface circuit that communicates control, status or other data between the connected control device and the luminaire.

Abstract: A light emitting diode (LED) filament light bulb is disclosed. The LED filament light bulb includes a plurality of LED filaments, an RF driver, an antenna, and a cover. The antenna defines a first end portion and a second end portion, where the first end portion of the antenna is electrically connected and in signal communication with the RF driver. The cover defines an external wall and a support structure. The external wall defines an interior volume and the support structure defines an evacuation passageway and a cavity. The evacuation passageway and the antenna are both received within the cavity of the support structure and the evacuation passageway is fluidly connected to the interior volume of the cover.

Abstract: An LED sticker is disclosed that receives an NFC transmission from a nearby smartphone to energize LEDs in the sticker. A spiral (or loop) antenna is used in the sticker to generate power from the NFC transmission. The NFC signal is at 13.56 MHz, which is the resonant frequency of the NFC antenna circuit in the smartphone. The LED portion is formed by sandwiching pre-formed microscopic LEDs between two conductive layers to connect the LEDs in parallel. The conductive layers form a relatively large integral capacitor that is used to achieve the 13.56 MHz resonant frequency. So no additional capacitor is needed in the circuit to achieve a resonance of 13.56 MHz. This greatly reduces the design requirements of the antenna. The LED sticker may also contain an NFC tag having its own independent loop antenna and NFC chip. Various practical applications of the LED sticker are disclosed.

Abstract: A lighting assembly including a shell, wherein the shell includes an inner wall defining an inner lumen, an outer wall encircling the inner wall, a set of radial fins connecting the inner and outer walls, the set of fins cooperatively defining a set of cooling channels between adjacent fins, the inner wall, and the outer wall; an insert removably mounted within the inner lumen, the insert defining a power storage lumen; a power storage unit arranged within the power storage lumen; a circuit board coupled to the power storage unit, the circuit board comprising a processor and communication module; a lighting module electrically connected to the circuit board, wherein the lighting module includes a substrate and a set of light emitting elements mounted to a first broad face of the substrate.

Abstract: An LED luminaire includes an LED engine system that drives a plurality of interchangeable LED modules. The LED engine system may be arranged in a luminaire housing. The LED engine system includes a power plate assembly and a plurality of LED modules that are removable and interchangeable with respect to the power plate assembly. The LED engine system is customizable or modifiable to vary the light output therefrom, in that various types of LED modules may be utilizable therewith and one or more of the LED modules may be mounted to the power plate assembly at two or more orientations.

Abstract: The disclosed technology relates to a lighting system that utilizes an ambient light sensor to detect at least one of a color temperature and intensity of ambient light to set or adjust at least one of an intensity and color temperature of light to be emitted by an array of LEDs. The array of LEDs include at least one warm color temperature LED and at least one cool color temperature LED.

Abstract: The disclosed technology relates to a lighting system that utilizes an ambient light sensor to detect at least one of a color temperature and intensity of ambient light to set or adjust at least one of an intensity and color temperature of light to be emitted by a plurality of LEDs. The plurality of LEDs include RGB+WW LEDs.

Abstract: An electronic device for controlling switching circuitry is described. The electronic device includes line voltage measuring circuitry configured to measure a line voltage to produce a line voltage measurement. The electronic device also includes load voltage measuring circuitry configured to measure a load voltage to produce a load voltage measurement. The electronic device further includes a processor coupled to the line voltage measuring circuitry and the load voltage measuring circuitry. The processor is configured to adjust a control signal for a transition of the switching circuitry based on the line voltage measurement and the load voltage measurement to minimize heat generation and electromagnetic interference creation by the switching circuitry.

Abstract: A lighting device (1) is disclosed. The lighting device (1) comprises: a communication unit (10) for wireless communication between the lighting device (1) and an external device; a solid-state lighting element (3) electrically connected to the communication unit (10); a heat sink (5) in thermal contact with the solid-state lighting element (3), the heat sink (5) having a slot (5a) adapted to act as a slot antenna; and a feed antenna (11) electrically connected to the communication unit (10), the feed antenna (11) having at least one end tip arranged at the slot (5 a) so as to enable the feed antenna (11) and the slot (5a) to communicate by proximity coupling.

Abstract: An LED lamp is provided that is capable of being wirelessly and remotely controlled by an LED lighting control device. The LED lamp includes an antenna on the lens of the LED lamp and is embedded in a raised section of lens material. Locating the antenna in the raised section of lens material allows the LED lamp to be controlled by a stronger control signal from the LED lighting control device at greater distances (e.g., typically greater than ten feet) and does not detract from the aesthetic appeal of the LED lamp.

Abstract: A wireless wiring apparatus includes a ceiling-embedded casing and a power-receiving casing. The ceiling-embedded casing includes screws connected to a surface of the ceiling-embedded casing and configured to be connected to a ceiling, a bracket inside the ceiling-embedded casing and connected to the screws, a coil, and a power wire connected to an external alternating current electrical power source. The power-receiving casing includes neodymium magnets on another surface of the power-receiving case, L-shaped notches formed adjacent to the neodymium magnets, and a coil of wire formed inside the power-receiving casing.

Abstract: An illumination device is provided. The illumination device includes a substrate including a light-emitter. An instrument main body includes a substrate arrangement surface, with the substrate being on the substrate arrangement surface. A cover is attached to the instrument main body, covers the substrate, and is transparent. An antenna is on the cover and configured to receive a signal from an outside of the illumination device. A driver is on the instrument main body and configured to supply power to the light-emitter. A controller is configured to control the power supplied from the driver to the light-emitter based on the signal received by the antenna. The cover includes a diffusion factor from 40% to 90%.

Abstract: A lighting module, including: a baseboard configured to receive a user signal indicating a user lighting preference; a communication submodule configured to receive the user signal and convert the user signal to machine readable data indicating the user lighting preference; a control submodule communicably coupled to the wireless communication submodule for receiving the machine readable data, wherein the microcontroller submodule comprises: memory configured to store a lighting parameter provided by a provider, and a processor configured to generate lighting driver instructions based on the user lighting preference and the lighting parameter; and a lighting mode output submodule configured to output the lighting driver instructions to a lighting driver module of a lighting assembly for controlling light emitting elements of the lighting assembly.

Abstract: A light source to be powered by microwave energy, having a dielectric body or fabrication of material lucent for exit of light therefrom, a receptacle within the dielectric body or fabrication, and a lucent microwave-enclosing Faraday cage surrounding the dielectric body or fabrication. The dielectric body or fabrication within the Faraday cage forms at least part of a microwave resonant cavity. A sealed plasma enclosure of lucent material within the receptacle has a means for locating the plasma enclosure within the receptacle with respect to the dielectric body or fabrication.

Abstract: A lighting device includes: a communication unit configured to wirelessly communicate with a wireless device provided externally; a command receiver that receives a command from outside; a light emitter including a light source; and a controller connected to the communication unit, the command receiver, and the light emitter. The command receiver receives a wireless device specifying command that specifies the wireless device with which the communication unit is to wirelessly communicate. The controller tests wireless communication with the wireless device via the communication unit based on the wireless device specifying command received, obtains communication reliability information regarding the reliability of the wireless communication, and causes the light emitter to perform at least one of flashing, dimming, and toning based on the communication reliability information obtained.

Abstract: Disclosed is a lighting apparatus. The lighting apparatus includes: a control module supplying power; a heat sink receiving the control module; a light source mounted on the heat sink and connected to the control module; and a communication module including a connection terminal inserted into the heat sink and connected to the control module, and an antenna device protruding from the heat sink. Since the lighting apparatus can be controlled in a wireless scheme, a user of the lighting apparatus can easily control the lighting apparatus.

Abstract: A lighting unit comprises a solid state lighting element (10). An upper housing (18) forms a light mixing chamber (20) over the solid state lighting element (10) and a loop-shaped antenna (22) is held by the upper housing (18), wherein the upper housing (18) comprises a reflective inner wall at least where it defines the mixing chamber (20) and said solid state lighting element (10) is inside said reflective inner wall. This makes use of the component which defines the mixing chamber (20) to hold a loop-shaped antenna (22) in place above the lighting element (10) and therefore away from the heat generated by the lighting element (10) and away from any metallic heat sink or heat spreading components (16).

Abstract: A light emitting diode (LED) lighting device is provided. The device includes an LED light source assembly installed on the top of a heat sink body, and an LED driving and power supply unit configured to drive the LED light source assembly and provide electrical power for the LED lighting device. The device also includes a heat sink including the heat sink body and a heat sink covering, where the heat sink covering has an opening; and a plane including the highest point of the top of the heat sink body is higher than a plane including the opening of the heat sink covering. Further, the device includes a radio frequency (RF) antenna installed on periphery of the heat sink body. A plane that includes the highest point of the RF antenna is at the same level or lower than the plane that includes the highest point of the top of the heat sink body.

Abstract: A lighting control apparatus using a wire and wireless integrated dimming circuit includes: an input power supply unit; a converter for converting input power to lighting unit supply power; a lighting unit applied with the lighting unit supply power to emit light; a wired module for inputting a wired dimming signal for controlling the lighting unit; a wireless module for inputting a wireless dimming signal for controlling the lighting unit; and a transform module for receiving the wired dimming signal or the wireless dimming signal, transforming the received dimming signal to a preset power, and applying the transformed power to the converter, in which the wired module and the wireless module are connected in parallel, selectively receive the wired dimming signal or the wireless dimming signal, and applies the received dimming signal to the transform module.

Abstract: Antenna-containing LED lighting devices, systems and configuring methods are provided. An exemplary LED lighting device includes an LED light source component unit and an LED driving circuit and power supply unit configured to drive the LED light source component unit and to power the LED lighting device. The LED lighting device further includes a heat sink, an RF antenna, and an RF circuit. The RF antenna is configured to have an antenna top plane containing a highest point of the RF antenna coplanar with or lower than a heat sink top plane containing a highest point of the heat sink. The RF antenna is configured without affecting a light-emitting path from the LED light source component unit.

Abstract: A high-frequency power supply device is provided with a plasma ignition step that supplies pulse power to ignite plasma, and drive power supply step to supply drive power for maintaining the plasma being generated. In the plasma ignition step, an ignition pulse being applied in an ignition pulse output operation is configured as including a main pulse that induces ignition, and a prepulse with lower power than the power of the main pulse and being applied at a stage prior to the main pulse. Since the ignition pulse is configured as including the main pulse and the prepulse, this enables protection of a high-frequency power source against reflected wave power, as well as reliably igniting the plasma.

Abstract: A directional lighting fixture is disclosed. The directional lighting fixture includes a first housing, a lighting element, an optical element, and a driver board. The lighting element is located within the first housing and substantially aligned with a central axis of the directional lighting fixture. The lighting element is configured to generate visible light. The optical element is positioned directly in front of the lighting element. The optical element is configured to direct the visible light generated by the lighting element in a specific direction. The driver board is electrically coupled to the lighting element and includes an antenna element. The driver board is offset from the central axis of the directional lighting fixture. The antenna element is positioned to be at least flush with the lighting element.

Abstract: Disclosed is a lighting apparatus. The lighting apparatus includes: a control module supplying power; a heat sink receiving the control module; a light source mounted on the heat sink and connected to the control module; and a communication module including a connection terminal inserted into the heat sink and connected to the control module, and an antenna device protruding from the heat sink. Since the lighting apparatus can be controlled in a wireless scheme, a user of the lighting apparatus can easily control the lighting apparatus.

Abstract: Disclosed is a lighting apparatus. The lighting apparatus includes: a control module supplying power; a heat sink receiving the control module; a light source mounted on the heat sink and connected to the control module; and a communication module including a connection terminal inserted into the heat sink and connected to the control module, and an antenna device protruding from the heat sink. Since the lighting apparatus can be controlled in a wireless scheme, a user of the lighting apparatus can easily control the lighting apparatus.

Abstract: Disclosed is a lighting apparatus. The lighting apparatus includes: a control module supplying power; a heat sink receiving the control module; a light source mounted on the heat sink and connected to the control module; and a communication module including a connection terminal inserted into the heat sink and connected to the control module, and an antenna device protruding from the heat sink. Since the lighting apparatus can be controlled in a wireless scheme, a user of the lighting apparatus can easily control the lighting apparatus.

Abstract: A lighting device which includes: a light source; a receiving unit which receives a control signal from outside the lighting device via wireless communication; and a control unit which causes the light source to emit light according to the control signal received by the receiving unit. When the receiving unit receives, from the outside the lighting device via the wireless communication, a test signal different from the control signal and for determining a state of the wireless communication, the control unit calculates a packet error rate of the test signal received by the receiving unit and causes the light source to emit light such that an emission state is changed according to a communication quality of the wireless communication determined based on at least the calculated packet error rate.

Abstract: A High Frequency light source has a central body of fused quartz, with a central void, filled with a fill in the void of material excitable by High Frequency energy to form a light emitting plasma. An inner sleeve of perforate metal shim extends along the length of the central body to provide a launching gap. The sleeve has a transverse end portion extending across the other, inner end of the central body. An outer cylinder of fused quartz with an internal bore such as to be a sliding fit with the inner sleeve, itself a sliding fit on the central body. An outer sleeve of perforate metal, enclosing the outer cylinder and having an end portion extending across the flush, void ends of the quartz body and cylinder and having a skirt extending past the flush over an aluminum carrier, clamped and holding the quartz elements against the carrier.

Abstract: A plasma emission device in an embodiment includes: an electromagnetic wave generator; a waveguide transmitting an electromagnetic wave emitted from the electromagnetic wave generator, an antenna receiving the electromagnetic wave transmitted through the waveguide; an electromagnetic wave focuser which is irradiated with the electromagnetic wave from the antenna; and an electrodeless bulb disposed in the electromagnetic wave focuser. A light-emitting material filled in the electrodeless bulb is excited by the electromagnetic wave focused by the electromagnetic wave focuser to perform plasma emission. The electromagnetic wave generator includes a cathode part and an anode part. A maximum output efficiency of the electromagnetic wave to be generated with an input power of 700 W or less is 70% or more.

Abstract: In one embodiment an apparatus to provide electrons to a substrate includes a plurality of helicon plasma sources arranged in a helicon source array, wherein each helicon plasma source comprises a helical antenna configured to generate a wave vector parallel to a first axis; and a magnet configured to generate a magnetic field vector parallel to the first axis, wherein each helicon plasma source is further configured to generate a respective magnetic field vector that is opposite that of a magnetic field vector of an adjacent helicon plasma source.

Abstract: A low inductance coil antenna for a plasma reactor has plural conductor lobes extending radially from respective RF supply connections.

Abstract: There is provided plasma equipment including a power supply that supplies a RF power; a chamber in which plasma is generated, and a processing target to processed by the plasma is provided; an antenna coil that is provided on a top surface of the chamber, and is connected to the power supply to receive the RF power; and a resonance coil that is provided to be electrically insulated or cut off from the antenna coil. The resonance coil receives electromagnetic energy applied from the antenna coil to allow a current to flow, and the plasma is generated within the chamber. It is possible to increase the degree of freedom for an installation position of the resonance coil, and it is possible to increase plasma density.

Abstract: A low inductance coil antenna for a plasma reactor has multiple radial zones of plural conductor lobes extending radially from respective RF supply and ground rings.

Abstract: A light emitting diode module includes a main base board, a wireless communication module, multiple light emitting diodes, a power output control system and a control unit. The wireless communication module is used for receiving a control signal. The light emitting diodes are disposed on the main base board and include light emitting diodes having at least one color. The power output control system is electrically connected to the light emitting diodes. The power output control system adjusts an amount of current flowing through each light emitting diode to control the light emitting diodes to emit light by adjusting the amount of current. The control unit is electrically connected to the wireless communication module and the power output control system for controlling the power output control system to adjust the amount of current of each light emitting diode.

Abstract: Disclosed are a lighting apparatus and a lighting control system. The lighting apparatus includes a heat radiation frame, at least one light emitting device on the heat radiation frame, a diffusion frame provided on the heat radiation frame to protect the at least one light emitting device and diffuse a light emitted from the at least one light emitting device, and a support frame provided under the heat radiation frame and having a receiving space to receive at least one module. The module includes a wireless communication module to transmit or receive a control single of the at least one light emitting device. The power supply module is physically separated from the wireless communication module.

Abstract: An organic electroluminescent display device having integrated an NFC antenna (9). The NFC antenna is arranged on a display screen of the organic electroluminescent display device, where the NFC interface is equipped with an output line of the display screen and is connected to a control mainboard of the display screen. This combines the display screen and the NFC antenna (9) into one, and has the NFC antenna (9) provided directly on the organic electroluminescent display device, thus preventing the problem of signal quality deterioration and reception failure due to wearing of the NFC antenna (9) interface and inaccurate alignment. In addition, provided is a solution to facilitate reception of an NFC signal from a display panel of the display device or for when the NFC signal must be received from the display panel of the display device.

Abstract: A microwave plasma processing apparatus includes a processing space; a microwave generator which generates microwaves for generating a plasma; a distributor which distributes the microwaves to a plurality of waveguides; an antenna installed in a processing container to seal the processing space and to radiate microwaves distributed by the distributor, to the processing space; and a monitor unit configured to monitor a voltage of each of the plurality of waveguides. A control unit acquires a control value of a distribution ratio of the distributor, which corresponds to a difference between a voltage monitor value of the monitor unit and a predetermined voltage reference value, from a storage unit that stores the difference and the control value corresponding to each other. The control unit is also configured to control the distribution ratio of the distributor, based on the acquired control value.

Abstract: A lighting device may include a tube and end caps located at two ends of the tube, a lighting assembly arranged in the tube, a driver for the lighting assembly, an antenna, and a wireless communication circuit for conducting wireless communication, the antenna being provided in the end cap and the wireless communication circuit being provided in the tube or at least partially provided in the end cap, and one side of the wire communication circuit being connected to the driver and the other side thereof being connected to the antenna.

Abstract: An induction RF fluorescent lamp, comprising: a lamp envelope with a re-entrant cavity and evacuation tube; a power coupler, wherein the power coupler is located inside the re-entrant cavity; an electronic ballast, wherein the electronic ballast provides appropriate voltage and current to the power coupler; and an amalgam held within a capsule located above the power coupler within the lamp envelope, wherein the capsule is positioned with a mount comprising at least one wire attached to the capsule and having at least two wire ends extending from the capsule into the evacuation tube with contact made between the wire ends and the interior surface of the evacuation tube of the re-entrant cavity.

Abstract: A processor controlled induction RF fluorescent lamp, where the control processor runs a load control algorithm at least for switching the electrical load for connection to an external dimming device, the lamp comprising a vitreous envelope filled with an ionizable gas mixture; a power coupler comprising at least one winding of an electrical conductor; and an electronic ballast providing appropriate voltage and current to the power coupler.

Abstract: Disclosed is a radio frequency (RF) antenna for plasma ion sources. The RF antenna includes a low-resistance metal tube having an inner and outer diameter. A low friction polymer tube also having an inner and outer diameter surrounds the low-resistance metal tube. The inner diameter of the polymer tube is slightly larger than the outer diameter of the low-resistance metal tube. A pre-formed quartz glass tube encases the low friction polymer tube and low-resistance metal tube. The quartz glass tube is pre-formed in a desired shape. A guide wire is attached inside one end of the low-resistance hollow metal tube. The flexible low friction polymer tube containing the low-resistance metal tubed may then be threaded through the quartz glass tube.

Abstract: A microwave emission mechanism includes: a transmission path through which a microwave is transmitted; and an antenna section that emits into a chamber the microwave transmitted through the transmission path. The antenna section includes an antenna having a slot through which the microwave is emitted, a dielectric member through which the microwave emitted from the antenna is transmitted and a closed circuit in which a surface current and a displacement current flow. A surface wave is formed in a surface of the dielectric member. The closed circuit has at least: an inner wall of the slot; and the surface and an inner portion of the dielectric member. When a wavelength of the microwave is ?0, a length of the closed circuit is n?0±?, where n is a positive integer and ? is a fine-tuning component including 0.

Abstract: A method for operating a plasma lamp apparatus. The method includes providing a resonator structure configured with a bulb comprising a fill mixture. The bulb is coupled to an output coupling element. The method applying an RF power source to a resonator structure configured with an input coupling element and coupling the RF power to the output coupling element configured with the input coupling element to cause the fill mixture to discharge electromagnetic radiation. The method includes adjusting a spatial distance or relative configuration between the input coupling element and the output coupling element during output of the electromagnetic radiation and causing a change in an impedance value of the resonator structure to initiate an adjustment of a power transfer from the RF power source to an output of the electromagnetic radiation.

Abstract: An antenna for plasma generation radiates a microwave transmitted through a coaxial waveguide into a processing chamber and propagates the microwave on a metal surface of the processing chamber to convert gas into surface wave plasma. The antenna includes a gas flow path for passing the gas through the antenna, a plurality of gas holes that communicate with the gas flow path and introduce the gas into the processing chamber, and a plurality of slots that are separated from the gas flow path and penetrate through the gas flow path. The slots pass the microwave transmitted through the coaxial waveguide and a slow-wave plate to the processing chamber. A first space between portions of adjacent slots penetrating through the gas flow path is arranged to be wider than a second space between portions of the adjacent slots opening out to a plasma generation space of the processing chamber.

Abstract: A plasma generation device, including: an ionization unit that ionizes gas in a target space; an electromagnetic wave oscillator that oscillates an electromagnetic wave to be radiated to the target space; and an antenna that radiates the electromagnetic wave supplied from the electromagnetic wave oscillator to a gas ionization region in which gas ionized by the ionization unit is provided. The ionization unit ionizes gas and the antenna radiates the electromagnetic wave thereto to generate plasma. A plurality of strong electric field regions are formed around the antenna when the electromagnetic wave is supplied from the electromagnetic wave oscillator. The strong electric field region is a region stronger in electric field than the surrounding area. The ionization unit ionizes gas around the plurality of strong electric field regions, or gas around a plurality of regions in which immediately before strong electric fields come into existence.

Abstract: A wireless electric power supply type light-emitting element 11 of the present invention includes a substrate 2; a light-emitting structure provided on the substrate 2; and a sealing layer 3 provided on the light-emitting structure, wherein the light-emitting structure includes an electric power receiving antenna 4 and an organic electroluminescence element provided on the installation surface of the substrate 2; and two connecting wires 61 and 62 for electrically connecting the electric power receiving antenna 4 and the organic electroluminescence element, the electric power receiving antenna 4 is covered with an insulating layer 7 exclusive of two terminals 41 and 42 of the electric power receiving antenna 4 to which the end parts of the two connecting wires 61 and 62 are connected, and the light-emitting structure is sealed between the substrate 2 and the sealing layer 3.

Abstract: A flat LED PAR lamp having an antenna secured to the exterior parabolic wall of the glass reflector for use in a wireless network. The interior wall is coated with an aluminized reflective coating that shields the antenna from the internally radiated noise. The aluminized parabolic reflector, together with its companion flat clear lens, is made using a lead-free glass to improve the lumen preservation over the life of the lamp. An efficient LED lamp array is used as the primary source of illumination within the parabolic reflector. Mounted in the base of the LED PAR lamp is the wireless communication and control.

Abstract: An induction RF fluorescent lamp includes a lamp envelope with a re-entrant cavity both covered on a partial vacuum side with phosphor and filled with a working gas mixture; an air-core power coupler on the non-vacuum side of said re-entrant cavity comprising a coil composed of at least one turn of an electrical conductor; an electronic ballast, wherein the ballast converts mains frequency voltage and current to a power coupler frequency voltage and current, the electronic ballast providing the voltage and current to the power coupler through at least two of a plurality of electrical terminals of the electronic ballast; and a capacitor electrically connected between the air-core power coupler and at least one of the plurality of electrical terminals of the electronic ballast, wherein the magnitude of the impedance of the capacitor is high at the mains frequency and the magnitude of the impedance of that same capacitor is low at the operating frequency of the RF fluorescent lamp.

Abstract: An induction RF fluorescent lamp includes a lamp envelope with a re-entrant cavity both covered on a partial vacuum side with phosphor and filled with a working gas mixture; a power coupler on the non-vacuum side of said re-entrant cavity comprising a ferromagnetic core overwound with at least one turn of an electrical conductor; an electronic ballast, wherein the ballast converts mains frequency voltage and current to a power coupler frequency voltage and current, the electronic ballast providing the voltage and current to the power coupler through at least two of a plurality of electrical terminals of the electronic ballast; a capacitor electrically connected between the ferromagnetic core and at least one of the plurality of electrical terminals of the electronic ballast, wherein the magnitude of the impedance of the capacitor is high at the mains frequency and the magnitude of the impedance of that same capacitor is low at the operating frequency of the RF fluorescent lamp.

Abstract: A plasma reactor has an overhead inductively coupled plasma source with two coil antennas and symmetric and radial RF feeds and cylindrical RF shielding around the symmetric and radial RF feeds. The radial RF feeds are symmetrically fed to the plasma source.