Abstract:
A circuit arrangement for a mobile radio device includes a first transmission path for a first communication system with TDD duplex operation and a second transmission path for a second communication system with FDD duplex operation. The first transmission path contains a first transmission filter and the second transmission path contains a first duplexer. The first and second communication systems use transmission frequency bands that are arranged within the same octave. A transmitted signal from the first communication system can be routed switchably and thus either via the first or the second transmission path.
Abstract:
A process for producing a detergent portion, comprising the steps of forming one or more dimensionally stable hollow bodies comprising at least one compartment by injection moulding, providing one or more means for compartmentalizing the dimensionally stable hollow bodies, filling the compartment with at least one detersive formulation, and closing the compartment to form a partial or whole enclosure around the detersive formulation.
Abstract:
An electrical component with a filter circuit is specified that includes a first bandstop filter and a second bandstop filter. The first bandstop filter includes at least one resonator operating with acoustic waves and has a first stop band. The second bandstop filter includes LC elements and has a second stop band that lies at least one octave higher than the first stop band.
Abstract:
An electrical multiple-layer component is described herein. The component includes a base body having dielectric layers and internal electrodes. The internal electrodes are of connected to each other electrically between the dielectric layers via at least one external electrode on side surfaces of the base body. The component also includes an electrical connection between the external electrode and a contact surface on a surface of the base body and insulated relative to an outer side of the component.
Abstract:
A circuit array includes an antenna input, a signal input, a signal output, and a switch unit. The switch unit connects the antenna to either the signal input or the signal output. The antenna input is connected to a first productive device. The first protective device is a band-pass filter in a T configuration.
Abstract:
A functional block of a front-end circuit for a communication device, which is employed for multi-band and/or multi-mode operation, is proposed. By positioning, according to this invention, a pin diode switch in one of the parallel signal paths instead of positioning it on the input side before separating the signal paths, it is possible to do without an impedance transformation network on the input side and to thus reduce the signal loss and the space requirement of the circuit. In a further configuration, the signal paths preferably associated with the adjacent frequency bands are combined on the output side, whereby the further processing of the signals corresponding to the different frequency bands takes place in one path. This for example allows a chip set designed for (n−1) frequency bands to be used in a transmission system designed for n bands. Another embodiment of this invention enables monitoring of the received signal of a system even during operation of the other mode in a multi-mode system. Stable electrical properties of the circuit can be achieved according to this invention through integration of all components of the front-end circuit in one module.
Abstract:
Electrical component and switching mechanism with the component The invention relates to an electrical component with a sequence of ceramic layers (1, 11, 12) stacked one on top of the other that form a base body with electrode layers (21, 22, 23, 24, 25) arranged between the ceramic layers (1, 11, 12) that form at least one capacitor (32, 33, 34, 35), along with at least one phase gate (41, 42, 43, 44) that is applied to the surface of the base body of its ceramic layer (1, 11, 12), and in which the electrode layers (21, 22, 23, 24, 25) are connected in a electrically conductive manner to contact surfaces (61, 62, 63, 64, 65) by means of through contacts (71, 72, 73, 74, 75) running inside the base body. At the same time, the side surfaces of the base body are free of metal plating. In addition, the invention relates to a switching mechanism with the component. The invention has the advantage that very space-efficient filters can be produced in the “flip chip” style.
Abstract:
A circuit arrangement for use with a mobile telephone includes a transmitting circuit. The transmitting circuit includes a first signal line that corresponds to a first frequency band, a second signal line that corresponds to a second frequency band, a switch that connects an antenna to one of the first and second signal lines, a first amplifier in series with the first signal line, and a second amplifier in series with the second signal line. A first band-pass filter is between the first amplifier and the switch. The first band-pass filter has a frequency range that corresponds to the first frequency band. A second band-pass filter is between the second amplifier and the switch. The second band-pass filter has a frequency range that corresponds to the second frequency band.
Abstract:
The invention relates to a circuit array with an antenna input (1), a signal input (2) and a signal output (3), a switch unit (4), in which the antenna input (1) is connected to a first protective device (6) against electrostatic discharges, wherein the first protective device (6) has an antenna input (111) and a switch output (112), which are connected to one another by a line (113), and in which a voltage-limiting element (114) is connected to a ground (8) in parallel to the line (113). The advantage of the circuit array of the invention is that the protective device (6) has a low insertion loss. The invention also relates to a circuit module as well as the use of the circuit module as a front-end module.
Abstract:
The invention relates to a circuit array with an antenna input (1), a signal input (2) and a signal output (3), a switch unit (4), in which the antenna input (1) is connected to a first protective device (6) against electrostatic discharges, wherein the first5 protective device (6) is a band-pass filter in a π configuration. An advantage of the first protective device (6) is that when it is used in a mobile telephone, a band-pass filter in the front-end module can be omitted. In addition, the band-pass filter has very favorable filtering characteristics, so that ESD-related interference can be effectively suppressed. The invention also relates to a circuit module and the use of the circuit module.