Abstract:
A bandpass sigma-delta modulator using acoustic resonators or micro-mechanical resonators. In order to improve resolution at high frequencies, acoustic resonators. In order to improve resolution at high frequencies, acoustic resonators or micro-mechanical resonators are utilized in a sigma-delta modulator instead of electronic resonators. The quantized output is fed back using a pair of D/A converters to an input summation device. In fourth order devices, the feed back is to two summation devices in series. Such a sigma-delta modulator is usable in a software defined radio cellular telephone system and in other applications where high-frequency and high-resolution A/D conversion is required. A cancellation circuit may remove the anti-resonance signal from a resonator. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
Abstract:
A bandpass sigma-delta modulator using acoustic resonators or micro-mechanical resonators. In order to improve resolution at high frequencies, acoustic resonators. In order to improve resolution at high frequencies, acoustic resonators or micro-mechanical resonators are utilized in a sigma-delta modulator instead of electronic resonators. The quantized output is fed back using a pair of D/A converters to an input summation device. In fourth order devices, the feed back is to two summation devices in series. Such a sigma-delta modulator is usable in a software defined radio cellular telephone system and in other applications where high-frequency and high-resolution A/D conversion is required. A cancellation circuit may remove the anti-resonance signal from a resonator. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
Abstract:
The present invention is directed to a network component of a communication network, the network component comprising a determiner configured to determine a required number of logical channels and to determine whether a bandwidth of a communication channel used by the communication network should be changed based on the required number of logical channels; a controller configured to change the bandwidth of the communication channel if it has been determined that the bandwidth of the communication channel used by the communication network should be changed based on the required number of logical channels; and a transceiver configured to send to a communication device a signal indicating to the communication device to operate in the communication channel with the changed bandwidth if the bandwidth of the communication channel has been changed. A method of performing an operation of a communication network in a communication channel is also disclosed.
Abstract:
A method for transmitting OFDM symbols by a plurality of ad-hoc radio communication devices in an ad-hoc radio communication devices' group is provided, the method comprising: a first ad-hoc radio communication device of the ad-hoc radio communication devices' group transmitting a first plurality of two OFDM symbols in a first plurality of two frequency sub-ranges of a frequency range selected for transmission in accordance with a frequency hopping pattern, the frequency range comprising a plurality of frequency sub-ranges; in the same transmission time period, a second ad-hoc radio communication device of the ad-hoc radio communication devices' group transmitting a second plurality of two OFDM symbols in a second plurality of two frequency sub-ranges of the frequency range, wherein the second plurality of frequency sub-ranges has no overlap with the first plurality of frequency sub-ranges.
Abstract:
The present invention relates to an integration module system of millimeter-wave and non-millimeter-wave antennas and an electronic apparatus, the system comprising a millimeter-wave antenna module and a non-millimeter-wave environment, the millimeter-wave antenna module forming a communication connection with the non-millimeter-wave environment for realizing reusing of the millimeter-wave antenna module to achieve a function of non-millimeter-wave antenna(s). The present invention proposes directly reusing a millimeter-wave antenna module, which is designed so that this module also has an antenna function of a non-millimeter-wave module, while an individual module's own volume does not need to be increased, and the module itself does not need to have additionally-added antenna traces, that is, with the same volume, a function of non-millimeter-wave antenna(s) may be further added. Therefore, it obviously helps to avoid an increase of the device's volume and improve compactness of the system and system design.
Abstract:
Un módulo de integración de antenas de ondas milimétricas y no milimétricas, que comprende: un portador de módulos (1a), una o más antenas de ondas milimétricas (2a) dispuestas sobre una superficie del portador de módulos (1a), una o más antenas de ondas no milimétricas (3a), y un circuito integrado de radiofrecuencia (4a); en el que el circuito integrado de radiofrecuencia (4a) está conectado eléctricamente a la(s) antena(s) de ondas milimétricas (2a), y en el que el circuito integrado de radiofrecuencia (4a) y la(s) antena(s) de ondas no milimétricas (3a) están colocados en diferentes planos del portador de módulos (1a); el módulo de integración caracterizándose porque los planos donde se dispone la o las antenas de ondas no milimétricas (3a) no son paralelos al plano donde se dispone el circuito integrado de radiofrecuencia (4a).
Abstract:
The present invention discloses an integration module of millimeter-wave and non-millimeter-wave antennas, comprising a module carrier, one or more millimeter-wave antennas, one or more non-millimeter-wave antennas, and a radio frequency integrated circuit; the radio frequency integrated circuit is electrically connected to the millimeter-wave antenna(s); the radio frequency integrated circuit and the non-millimeter-wave antenna(s) are set in the same plane as or a space non-parallel with that of the module carrier. With the present invention, the height space on the side of a mobile communication device can be fully used, so that it is not necessary to occupy a large amount of horizontal area, thereby reducing the requirements of the antenna module for the overall size of the mobile communication device, and thus reducing cost and enhancing product competitiveness.