Patent application number | Description | Published |
20080200195 | Multi-Mode Control Station, Radio Communication System, Radio Station, and Radio Communication Control Method - The overall throughput of the radio communication traffic in a radio communication area in a radio communication environment where a plurality of types of radio communication systems are mixedly used in a neighboring radio communication area is improved. When a multi-mode control station ( | 08-21-2008 |
20080299937 | Sampling Filter - The present invention aims at providing a sampling filter capable of changing a filtering characteristic without use of a complicate waveform as a control signal. A sampling filter | 12-04-2008 |
20090009155 | Discrete Time Direct Sampling Circuit and Receiver - A direct sampling circuit and a receiver which carry out discrete time analog processing with a high degree of design freedom and are provided with a filter property which is achievable to comply with the receipt of a broad band signal. A plurality of discrete time analog processing circuits ( | 01-08-2009 |
20090021296 | SAMPLING FILTER AND RADIO COMMUNICATION APPARATUS - There are provided a sampling filter that enables a filter characteristic to be adjusted flexibly, and a radio communication apparatus equipped with this sampling filter. A sampling filter apparatus ( | 01-22-2009 |
20090051422 | Filter Device - Provided is a switched capacitor type filter device having a steep characteristic with a small number of taps. The filter device includes positive polarity selecting switches ( | 02-26-2009 |
20090104880 | WIRELESS COMMUNICATION APPARATUS AND COMMUNICATION CONTROL METHOD - A wireless communication apparatus and a communication control method wherein even if there occurs a change in communication control information due to a function change, an appropriate correction is implemented to improve the communication quality. A wireless communication apparatus ( | 04-23-2009 |
20090257531 | SAMPLING FILTER APPARATUS AND WIRELESS COMMUNICATION APPARATUS - The present invention has an object to provide a sampling filter apparatus and a wireless communication apparatus, which are capable of changing a filter characteristic without employing complex waveforms as control signals, and also, capable of performing filtering process operations without performing a decimation, while utilizing a wide frequency space. A sampling filter apparatus | 10-15-2009 |
20100109746 | SAMPLING MIXER, FILTER DEVICE, AND RADIO DEVICE - A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer section, and a signal generator for generating a control signal for the in-phase mixer section and the opposite-phase mixer section respectively. The IIR filter using signals that underwent a current conversion by using the different transconductances is constructed, so that the filter characteristic can be designed by a weighting of the transconductance in addition to a capacitance ratio. As a result, the wide-band filter characteristic and the band-pass filter characteristic can be obtained, and deterioration of the receiving sensitivity can be suppressed by designing the filter characteristic suitable for the radio communication system. | 05-06-2010 |
20100167669 | DISCRETE FILTER, SAMPLING MIXER, AND RADIO DEVICE - Provided is a discrete filter capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component. In a sampling mixer ( | 07-01-2010 |
20100248675 | DISCRETE FILTER, SAMPLING MIXER, AND RADIO DEVICE - Provided is a discrete filter capable of increasing degree of freedom of design including a DC gain. A sampling mixer ( | 09-30-2010 |
20110221507 | SAMPLING MIXER, FILTER DEVICE, AND RADIO DEVICE - A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer section, and a signal generator for generating a control signal for the in-phase mixer section and the opposite-phase mixer section respectively. The IIR filter using signals that underwent a current conversion by using the different transconductances is constructed, so that the filter characteristic can be designed by a weighting of the transconductance in addition to a capacitance ratio. As a result, the wide-band filter characteristic and the band-pass filter characteristic can be obtained, and deterioration of the receiving sensitivity can be suppressed by designing the filter characteristic suitable for the radio communication system. | 09-15-2011 |