Abstract: In a temperature-recording method for recording a temperature by means of an electrical circuit of a data storage medium, which electrical circuit is suppliable with energy by means of a signal feedable to the data storage medium, provision is made for a physical variable dependent on the temperature to be recorded by means of the circuit supplied with energy, the physical variable being influenced by a temperature-recording material (1, 7), preferably a piezoelectric or ferroelectric material, co-operating with the circuit, which material comprises alignable electric or magnetic elementary dipoles (3), and for which temperature-recording material (1, 7) a Curie temperature is known, exceeding of which causes the alignment of the elementary dipoles to be lost, and the temperature-recording material (1, 7) being selected in such a way that its known Curie temperature corresponds to a pre-determined limit temperature.

Abstract: An antenna array for the operation in two ranges of application (29,31) comprising a first and a second antenna (3,5) with which the positions of the resonant frequencies are different from each other, wherein these resonant frequencies lie between the two ranges of application (29,31).

Abstract: The invention relates to a receiver module (1), more particularly a GPS (Global Positioning System) receiver module for receiving PS signals and for determining position data therefrom, as well as a dual band antenna (2) for such a receiver module (1). The dual band antenna (2) has at least a first and a second resonant printed wire structure (11 and 12) which are a first junction point (10) to a first printed wire (24) on a printed circuit board (7). Additionally, at least a second and wire (25 and 29) are provided on the printed circuit board (7) as connections to the antenna. The invention further relates t circuit board (PCB) as well as a mobile telecommunications device having such a dual band antenna.

Abstract: A description is given of a switchable multiband antenna for the highfrequency and microwave range, which can be operated in a relatively large number of frequency bands without significant restriction of performance in each individual frequency band. This is essentially achieved by a switchable input structure (24) by means of which resonant printed line structures (21; 22) of the antenna that are not required can be isolated from an HF or ground supply line (242). In particular, in one embodiment, a number of resonant printed line structures are applied to a substrate (10), which printed line structures are connected to the corresponding HF or ground supply line or isolated from the latter, in a targeted manner, by means of one or more switching devices.

Abstract: A description is given of an antenna module, in particular for telecommunication in the high frequency and microwave range, which can be controlled with regard to its radiation properties and can be optimized in particular with regard to its efficiency. This is essentially achieved in that the antenna module comprises at least one antenna (1) having at least a first terminal (11) and a second terminal (12), and a circuit arrangement for the switchable splitting of an HF connection to the antenna (1) onto at least a first branch and a second branch which are connected to the first and second terminals (11, 12) of the antenna (1), respectively. The invention also relates to a circuit board and to a telecommunication device, particularly a mobile telecommunication device, comprising such an antenna module.

Abstract: An antenna module more particularly for the high-frequency and microwave range is described which can be operated as a wideband antenna in various frequency bands. For this purpose the antenna module is particularly suitable in that it has an antenna (10) and an HF line (20) to connect the antenna (10) to associated transmit and/or receive stages, while at least parts or sections (21, 22) of the HF line (20) have a mismatch in the form of an impedance deviating from that of the antenna (10). The invention also relates to a telecommunications device having such an antenna module.

Abstract: A microwave antenna is described, having a substrate (11), at least one resonant metallization structure (1) and at least a first and a second feed point (3, 4, 6, 7) for coupling in HF power to be radiated, said antenna being particularly suitable for surface mounting on a printed circuit board (20). The feed points (3, 4, 6, 7) are so arranged in this case that, for different positions of the antenna (10) on a printed circuit board (20), it is in each case possible to select a feed point in which case the electrical properties of the antenna (10) are at least substantially unchanged.

Abstract: The invention relates to a receiver module (1), more particularly a GPS (Global Positioning System) receiver module for receiving PS signals and for determining position data therefrom, as well as a dual band antenna (2) for such a receiver module (1). The dual band antenna (2) has at least a first and a second resonant printed wire structure (11 and 12) which are connected via a first junction point (10) to a first printed wire (24) on a printed circuit board (7). Additionally, at least a second and a third printed wire (25 and 29) are provided on the printed circuit board (7) as connections to the antenna. The invention further relates to a printed circuit board (PCB) as well as a mobile telecommunications device having such a dual band antenna.

Abstract: The invention relates to a projection system comprising an active display (1, 1?). The display comprises radiation-sensitive control units (4) which decode the information about brightness and color of a pixel in the signal beam (1) of a projector (2) and drive connected light-emitting diodes (3) accordingly. Due to the self-sufficient mode of operation of these pixels, it is possible to build up comparatively flat and large-sized projection faces whose brightness is not limited by the capacity of the projector (2).

Abstract: The invention relates to an antenna comprising a dielectric substrate (1) and two resonant printed wiring structures, more particularly for use in high-frequency and microwave domain. On an end face of the structure (2) is arranged along a first edge and on an opposite, second edge of the same end face a second printed wiring structure (3). The arrangement of the printed wiring structures provides that resonances are developed which make the use of the proposed antennas in the four separate GPS, DCS/PCS, UMTS and Bluetooth applications possible.

Abstract: Microwave antennas with a dielectric substrate (1) and at least one resonant conductor track structure (31 to 39) are described, which are particularly suitable for mobile dual-band and multiband telecommunication devices such as mobile and cellular telephones, as well as for devices which communicate in accordance with the Bluetooth standard. In addition, attuning of the resonance frequencies of various operating modes to a concrete constructional situation is possible thanks to various line segments (34, 35) and tuning stub lines (41, 42) without the necessity of changing the fundamental antenna design. Finally, the antennas may be soldered together with other components onto a printed circuit board in a conventional surface mounting process.

Abstract: A microwave antenna is described, having a substrate (11), at least one resonant metallization structure (1) and at least a first and a second feed point (3, 4, 6, 7) for coupling in HF power to be radiated, said antenna being particularly suitable for surface mounting on a printed circuit board (20). The feed points (3, 4, 6, 7) are so arranged in this case that, for different positions of the antenna (10) on a printed circuit board (20), it is in each case possible to select a feed point in which case the electrical properties of the antenna (10) are at least substantially unchanged.

Abstract: A GPS receiver module (1) for receiving GPS signals and for determining position data therefrom is described, which is characterized in particular by a communications sub-module (3), to which the position data determined can be fed and by means of which said data can be converted into a format suitable for transmission to an a external appliance. The communications sub-module (3) is preferably a Bluetooth (BT) sub-module, by means of which the position data can be converted according to the Bluetooth standard and transmitted by wireless means. A dual band antenna particularly suitable for use with the GPS receiver module is furthermore described, by means of which it is not only possible to receive GPS signals, but also to establish a communications link with external appliances.

Abstract: 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).

Abstract: A miniaturized antenna is described with at least a ceramic substrate (10) and a metallization, particularly designed for use in the high-frequency and microwave ranges. The antenna is characterized in that the metallization is a surface metallization which is formed by a feed terminal (12) for electromagnetic energy to be radiated, by at least a first metallization structure (30), and by a conductor track (20) extending along at least part of the circumference of the substrate (10), which track connects the feed terminal to the at least one first metallization structure (30), which first metallization structure (30) comprises a first conductor track portion (31) extending from a side of the substrate lying opposite the feed terminal (12) towards the feed terminal and a first metallization pad (32).

Abstract: Microwave antennas with a dielectric substrate (1) and at least one resonant conductor track structure (31 to 39) are described, which are particularly suitable for mobile dual-band and multiband telecommunication devices such as mobile and cellular telephones, as well as for devices which communicate in accordance with the Bluetooth standard. In addition, attuning of the resonance frequencies of various operating modes to a concrete constructional situation is possible thanks to various line segments (34, 35) and tuning stub lines (41, 42) without the necessity of changing the fundamental antenna design. Finally, the antennas may be soldered together with other components onto a printed circuit board in a conventional surface mounting process.

Abstract: Microwave antennas with a dielectric substrate (1) and at least one resonant conductor track structure (31 to 39) are described, which are particularly suitable for mobile dual-band and multiband telecommunication devices such as mobile and cellular telephones, as well as for devices which communicate in accordance with the Bluetooth standard. In addition, attuning of the resonance frequencies of various operating modes to a concrete constructional situation is possible thanks to various line segments (34, 35) and tuning stub lines (41, 42) without the necessity of changing the fundamental antenna design. Finally, the antennas may be soldered together with other components onto a printed circuit board in a conventional surface mounting process.

Abstract: A miniaturized antenna is described with at least a ceramic substrate (10) and a metallization, particularly designed for use in the high-frequency and microwave ranges. The antenna is characterized in that the metallization is a surface metallization which is formed by a feed terminal (12) for electromagnetic energy to be radiated, by at least a first metallization structure (30), and by a conductor track (20) extending along at least part of the circumference of the substrate (10), which track connects the feed terminal to the at least one first metallization structure (30), which first metallization structure (30) comprises a first conductor track portion (31) extending from a side of the substrate lying opposite the feed terminal (12) towards the feed terminal and a first metallization pad (32).

Abstract: 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).

Abstract: A GPS receiver module (1) for receiving GPS signals and for determining position data therefrom is described, which is characterized in particular by a communications sub-module (3), to which the position data determined can be fed and by means of which said data can be converted into a format suitable for transmission to an a external appliance. The communications sub-module (3) is preferably a Bluetooth (BT) sub-module, by means of which the position data can be converted according to the Bluetooth standard and transmitted by wireless means. A dual band antenna particularly suitable for use with the GPS receiver module is furthermore described, by means of which it is not only possible to receive GPS signals, but also to establish a communications link with external appliances.