摘要:
The proposed invention application describes a novel configuration of an extremely small self-locking switching component, based on micro- electromechanical systems (MEMS) technology. Conventional MEMS switches need a continual control signal in order to obtain the wanted active (switching) state. The proposed invention needs only a short control signal (non-locking key) such as e.g. a pulse in order to switch the component on and/or off. RF-noise (ripples) on the de-control signal or bouncing effects can be neglected according to the proposed extension of the MEMS devices. This contributes to an easier and especially more robust design of electronic circuitries and allows for enhanced functionalities.
摘要:
The invention relates to a light sensor, particularly for LED-based lamps. The light sensor comprises at least one photosensor (1) and a temperature sensor (2). The photosensor (1) and the temperature sensor (2) are integrated on a common substrate in a common housing.
摘要:
An antenna (1) is described with a dielectric or permeable substrate (10) and at least one resonant conductor track structure (20) which is provided in particular for use in the high-frequency and microwave ranges and which is characterized in that the substrate (10) comprises at least one cavity (30). The cavity is preferably provided in a main surface of the substrate such that the latter has substantially the shape of a U-profile. This cavity not only enhances the radiation efficiency, but it also considerably reduces the total weight of the antenna. Further advantages of the antenna are that it offers a high degree of miniaturization as well as the possibility of surface mounting (SMD) on, for example, a printed circuit board (PCB).
摘要:
The invention relates to a circuit arrangement for operating a discharge lamp comprising an oscillator (OSC) for generating a high frequency input voltage, a piezo-electric transformer (PT) equipped with input terminals (I1, I2) coupled to the oscillator and output terminals (O1, O2), a load circuit (C, K1, K2) coupled to the output terminals of the piezo-electric transformer and comprising terminals for lamp connection (K1, K2). According to the invention the load circuit comprises an adjustable capacitor (C). This adjustable capacitor forms very simple means for controlling the light output of the discharge lamp over a wide range.
摘要:
This invention proposes a method of and a device for transmitting power via electromagnetic coupling from a transmission device to a set of reception devices, said method comprising a step of calculating by the transmission device, a first sum of given power levels defined by each reception device of said set of reception devices; if a maximum power that can be transmitted by the transmission device to said set of reception devices is less than said first sum, then performing a step of determining by said transmission device, based on said first sum and according to a set of criteria, a subset of reception devices among said set of reception devices, to which the transmission device transmits power.
摘要:
The present invention relates to a transceiver device for processing a medium access control (MAC) protocol used by a transceiver. The transceiver has a first antenna system for on-body communications and a second antenna system for off-body communications, the transceiver device being designed to reserve one or more data payloads for on-body communications and to allocate the first antenna system to the transceiver for the interval of time occupied by these data payloads, and/or to reserve one or more data payloads for off-body communications and to allocate the second antenna system to the transceiver for the interval of time occupied by these data payloads. An advantageous result of this is that the optimally matched antenna system is available for on-body communications and off-body communications respectively, collisions between data payloads on the radio channel being prevented within the network, and the throughput of data thus being increased and, at the same time, energy consumption being reduced for the transceiver.
摘要:
An antenna structure (106) comprising a first electrically conductive element (102) having a first end and a second end, a second electrically conductive element (103) having a first end and a second end, and a coupling structure (104) short- circuiting the first electrically conductive element (102) with the second electrically conductive element (103) by means of electrically connecting the electrically conductive elements (102, 103) at positions between the first and the second ends, wherein an integrated circuit (105) is connectable between the first end of the first electrically conductive element (102) and the first end of the second electrically conductive element (103).
摘要:
In an antenna configuration (4) with two antenna arms (5, 6) arranged in a V-shape, two coupling zones (13, 14) for electrically coupling to respective terminals of an integrated component (15) are provided in the region of the ends (7, 8) of the antenna arms (5, 6) lying close together, wherein each of the two antenna arms (5, 6) in addition comprises a coupling region (20, 21) at a distance from its coupling zone (13, 14), and each coupling region (20, 21) is designed for electrically coupling to a terminal of a further electronic component (22).
摘要:
The invention relates to a method and a system for radio identification with an additional close-range check, which prevent misuse of a radio identification system and increase the security of radio identification. In particular, so-called relay attacks are to be largely prevented in passive entry systems. The method according to the invention firstly provides for activation of a transponder (S 1) for reading of its data. After this step, an additional close-range status signal is provided (S2) which indicates the close range of a reader. Once the close-range status signal has been detected by a transponder (S3), data transmission for reading of the data stored in the transponder by the reader is possibly enabled in reaction to the detection of the close-range status signal (S4) and the data can be read by the reader for identification of the transponder (S5). The system according to the invention for radio identification with an additional close-range check consists of a reader for reading the data stored in a transponder and of an evaluation unit which is connected to the reader for identifying the transponder on the basis of the read data.