Abstract: Described is a process for producing beer, the process having the following steps: a) production of a CO2-sparse, in particular CO2-free, beer intermediate; b) racking of the beer intermediate into at least one pressureless or barely pressurizable vessel; and c) adding CO2 to the beer intermediate in a dispensing facility, as a result of which, the ready-to-consume, CO2-containing end product beer arises.

Abstract: A method and an apparatus are provided for enabling a wireless communication over a network in response to an indication of an emergency. The method comprises causing a base station to provide a wireless backhaul link in an uplink frequency band for further sending a call over the network in response to the call associated with the emergency. Reconfiguration enables turning a base station or base station router into a high power terminal. In this way, emergency calls may be completed over a network having at least one malfunctioning backhaul communications link in a network backbone.

Abstract: The invention proposes for improving the overall spectral efficiency of wireless telecommunication systems, in particular of mobile communication systems, the transmission of at least one multiframe signal having a plurality of sub-frames with predefined logical channels (BCCH, FCCH, SCH) repeatedly embedded in predefined sub-frames, wherein a transmitter diversity is applied using antenna and/or polarization hopping sequences such that during the transmission of respective one multiframe, each logical channel (BCCH, FCCH, SCH) is transmitted at least two times with a different antenna and/or polarization.

Abstract: The invention proposes a device for high-frequency and/or radio-frequency tuning comprising within one IC-package a first variable capacitor (C1) and at least one second capacitor (C2), each of the at least one second capacitor (C2) being fixed or variable respectively, at least one signal path connected to the first variable capacitor (C1) and providing at least one input and one output port (rf-port1, rf-port2) and at least one controllable switching means (SC2) for individually connecting and disconnecting at least one of the at least one second capacitor (C2) into the signal path or from the signal path, in particular in parallel to the first variable capacitor (C1).

Abstract: The invention relates to a method for producing a housing, wherein the base body of the housing (10) is initially separated from a hollow profile and a printed circuit board (1) is subsequently inserted into the base body of the housing (10). The base body of the housing (10) is then closed laterally with the aid of covering elements (6).

Abstract: The present invention provides a method and an apparatus for reducing radio frequency noise within a duplex communication system. The method comprises sensing a radio frequency transmit signal capable of operating a power amplifier that is capable of operation at a microwave transmit frequency and using a filter to cause an asymmetric notch in a noise power density spectrum in a radio frequency output signal to shape the noise power density spectrum at a low radio frequency power level in the microwave transmit frequency in response to the radio frequency transmit signal. In a base station, a duplex filter arrangement may trim the wideband noise within a power amplifier, such as a Class-S power amplifier. An increased filtering effort may be spend at a low power level at a power amplifier input.

Abstract: The present invention provides a filter unit cell. The filter unit cell includes a variable capacitor coupled in series between first and second nodes and an inductor coupled in series between the second node and a third node.

Abstract: A pressure sensor (3) is firmly connected to a base plate (1). The base plate (1) can be mounted, together with the pressure sensor (3), on a counterplate (7). The counterplate (7) has a drilled hole (8) through which pressure can be applied to the pressure sensor (3). The pressure sensor (3) has a connecting element (6) which projects, in the mounted state, into the drilled hole (8) in the counterplate (7).

Abstract: The present invention provides a method and an apparatus for controlling a Q-factor for a filter. The method comprises stabilizing an active feedback to provide a variable feedback in a filter, varying the active feedback based on an input signal to the filter, and producing a desired Q-factor for the filter at a first frequency band, in response to the variable feedback. The method further comprises reconfiguring a center frequency and a bandwidth of the filter based on a channel bandwidth of the input signal to the filter to adjust the Q-factor for the filter in response to a second frequency band different than the first frequency band. By reconfiguring a center frequency and a bandwidth of a filter, the Q-factor for the filter, such as a flexible or reconfigurable filter, may be controlled across a multiplicity of frequency band signals.

Abstract: An antenna element is provided which responsive in multiple frequency bands, has symmetric beam patterns, and is easily and cheaply fabricated. The antenna element includes at least three conductive plates arranged in a stack At least one pair of adjacent plates contain apertures that are mutually aligned relative to the stacking direction. The antenna element further includes at least one air stripline arranged to create radiative electromagnetic excitations of the apertures when the stripline or striplines are energized by a suitable radiofrequency voltage source or sources.

Abstract: A wide-bandwidth aperture antenna is constructed of two parallel metal plates 51, 52, each having a resonant aperture 53, 54. The apertured plates are arranged parallel to one another, with the apertures aligned. A third plate 57 is arranged parallel to the apertured plates to act as a reflector. The resonant apertures are in the form of squares with rounded corners. Feed stubs 55 and 56 are arranged between the apertured plates and project into the region between the apertures to excite orthogonally polarized modes. The feed stubs are in the form of strips which are aligned in planes perpendicular to the planes of the apertured plates. An exemplary embodiment has a bandwidth of 1700 MHz to 3300 MHz, containing the bands used for GSM 1800, UMTS, UMTS+, Bluetooth and WLAN systems. The feed is high-impedance and the decoupling better than ?11 dB over the whole bandwidth.

Abstract: A wide-bandwidth aperture antenna is constructed of two parallel metal plates 51, 52, each having a resonant aperture 53, 54. The apertured plates are arranged parallel to one another, with the apertures aligned. A third plate 57 is arranged parallel to the apertured plates to act as a reflector. The resonant apertures are in the form of squares with rounded corners. Feed stubs 55 and 56 are arranged between the apertured plates and project into the region between the apertures to excite orthogonally polarized modes. The feed stubs are in the form of strips which are aligned in planes perpendicular to the planes of the apertured plates. An exemplary embodiment has a bandwidth of 1700 MHz to 3300 MHz, containing the bands used for GSM 1800, UMTS, UMTS+, Bluetooth and WLAN systems. The feed is high-impedance and the decoupling better than ?11 dB over the whole bandwidth.

Abstract: In a telecommunications transmitter and receiver two IQ-mixers of the same type are operated in 180 degrees phase shift. In both the transmitter and receiver, an input signal is coupled to each IQ-mixer and the output signal of the mixers are combined so as to cancel unwanted error components in each individual output signal. In the transmitter, residual carrier signals are cancelled, and in the receiver, DC-offsets are cancelled. In both, the wanted signals are added, doubling the amplitude of the resultant output signal leading to four times more output power and improved dynamic range.

Abstract: Improved frequency utilization in a radio network is achieved by using a radio system with a plurality of base stations, which respectively have at least one transmitter and one receiver, each base station being assigned at least one dual-polarized antenna. More efficient utilization of the available frequency band, and consequently a reduction in the cluster size, is made possible by the dual-polarized antenna being assigned a polarization modulator for changing at predetermined points in time the polarization state of a transmit signal to be transmitted.

Abstract: A mechatronic transmission arrangement for motor vehicles that comprises a transmission housing (1) is disclosed including a mechatronic component (2), and a sensor arrangement (4) accommodated therein. The latter is mounted in a manner that permits its position to change with regard to the mechatronic housing (3). A position adjusting device (13) operates between the sensor arrangement (4) and the transmission housing (1) while passing through the mechatronic housing (3). After adjusting, the sensor arrangement (4) can be fixed by means of a fixing device (18).

Abstract: The invention relates, inter alia, to a transmitter device, in particular for a base transceiver station in a mobile radio system, which has a digital modulator for making available a signal containing a phase information, and a modulation closed loop having a digital phase comparator operating at baseband whose first input is connected to the output of the digital modulator. In addition, a controllable oscillator is provided for generating an RF transmission signal at a controllable transmission frequency, a device which is assigned to the controllable oscillator and has the purpose of converting the RF transmission signal into a baseband signal containing a phase information. The output of the converter device is connected to a second input of the digital phase comparator.

Abstract: The invention proposes a device for providing tunable high-frequency and/or radio-frequency comprising within one IC-package at least four signal paths providing at least two input and at least two output ports (rf-port1, rf-port2, rf-prot3, rf-port4) at least one active component (T) and at least one variable passive component (C1, C2) connected at least with an input port of the active component (T), and at least one control path for controllable tuning the at least one variable passive component (C1, C2).

Abstract: An antenna element is provided which responsive in multiple frequency bands, has symmetric beam patterns, and is easily and cheaply fabricated. The antenna element includes at least three conductive plates arranged in a stack At least one pair of adjacent plates contain apertures that are mutually aligned relative to the stacking direction. The antenna element further includes at least one air stripline arranged to create radiative electromagnetic excitations of the apertures when the stripline or striplines are energized by a suitable radiofrequency voltage source or sources.

Abstract: In a telecommunications transmitter and receiver two IQ-mixers of the same type are operated in 180 degrees phase shift. In both the transmitter and receiver, an input signal is coupled to each IQ-mixer and the output signal of the mixers are combined so as to cancel unwanted error components in each individual output signal. In the transmitter, residual carrier signals are cancelled, and in the receiver, DC-offsets are cancelled. In both, the wanted signals are added, doubling the amplitude of the resultant output signal leading to four times more output power and improved dynamic range.

Abstract: A pressure sensor (3) is firmly connected to a base plate (1). The base plate (1) can be mounted, together with the pressure sensor (3), on a counterplate (7). The counterplate (7) has a drilled hole (8) through which pressure can be applied to the pressure sensor (3). The pressure sensor (3) has a connecting element (6) which projects, in the mounted state, into the drilled hole (8) in the counterplate (7).