Abstract:
The packaged device of the invention combines common mode filtering and ESD protection and is tuned to give optimum common mode protection at RF frequencies in use for mobile telephony, particularly, the lower frequency band of GSM.
Abstract:
The present invention relates to an electrical connector for a first IC, comprising a second IC (12) carrying ESD protection, the second IC (12) being integrated into the connector (8), which enhances the ESD protection and preserves the RF performance of such connector (8). The present invention further relates to a method for making an electrical connector (8) for a first IC, comprising this step of providing ESD protection to the first IC by integrating a second IC (12) carrying ESD-protection into the connector (8).
Abstract:
The present invention relates to an electrical connector for a first IC, comprising a second IC (12) carrying ESD protection, the second IC (12) being integrated into the connector (8), which enhances the ESD protection and preserves the RF performance of such connector (8). The present invention further relates to a method for making an electrical connector (8) for a first IC, comprising this step of providing ESD protection to the first IC by integrating a second IC (12) carrying ESD-protection into the connector (8).
Abstract:
A circuit arrangement (100) for a transponder comprises a control circuit (103) and an input circuit, wherein the input circuit comprises a first resonator (101), which comprises a first coil (104) and a first capacitor (105), and a second resonator (102), which comprises a second coil (108) and a second capacitor (109). The first capacitor and the second capacitor are designed as a first varactor and as a second varactor, respectively. Furthermore, the first resonator and the second resonator are designed in such a way that they can be used to provide a first output voltage and a second output voltage, respectively. Moreover, the control circuit (103) is designed in such a way that it can be used to control at least one of the varactors (105,109) so that a resonant frequency of the corresponding resonator can essentially be set to a predefined transmission frequency such that the output voltage of the corresponding resonator of the input circuit can be increased.
Abstract:
A circuit arrangement for a transponder comprises a control circuit and an input circuit, wherein the input circuit comprises a first resonator, which comprises a first coil and a first capacitor, and a second resonator, which comprises a second coil and a second capacitor. The first capacitor and the second capacitor are designed as a first varactor and as a second varactor, respectively. Furthermore, the first resonator and the second resonator are designed in such a way that they can be used to provide a first output voltage and a second output voltage, respectively. Moreover, the control circuit is designed in such a way that it can be used to control at least one of the varactors so that a resonant frequency of the corresponding resonator can essentially be set to a predefined transmission frequency such that the output voltage of the corresponding resonator of the input circuit can be increased.
Abstract:
The packaged device of the invention combines common mode filtering and ESD protection and is tuned to give optimum common mode protection at RF frequencies in use for mobile telephony, particularly, the lower frequency band of GSM. The package comprises a common mode choke followed by an ESD bridge including diodes.
Abstract:
An electronic circuit has an inductor. The inductor comprises a first number of electrically conductive tracks (108,...) in, or on, a substrate (105). The tracks are separated from one another. The inductor comprises a second number of electrically conductive wires (120,...). The ends of each wire contacts two different ones of the tracks. Among the first number of tracks there is at least a specific track that is electrically isolated from the wires upon the wires having been connected. Such an inductor can be made using a standardized track configuration on a substrate, and selectively skipping one or more tracks in order to determine the inductance.
Abstract:
It is proposed that passive wireless transponder systems used in the context of procedures for access identification be provided with signaling that can be perceived by human beings. This also makes it possible to detect that a relay attack, which is difficult to prevent, is being carried out. Attention is also drawn to other types of manipulative interference with the communication and to certain problems with the high-frequency transmission. By the employment of comparatively inexpensive and highly reliable means, this near-simultaneous perception of an identifying process for access purposes produces a very effective reduction in such threats to the security of the system. Other simple measures may have an advantageous effect in connection therewith. The signaling may also assist an ergonomic process. For example, an automobile entry or access system that is not specifically actuated, referred to as a passive keyless entry system, may be improved.