Patent application number | Description | Published |
20080198017 | Indentification of atennas via cables - A method is provided of identifying an antenna, by the steps of: providing the antenna with an identifying radiofrequency identification RFID circuit, connecting one end of a cable to the antenna, connecting the other end of the cable to a remote unit, sending a trigger signal to the RFID circuit, receiving by the remote unit via the cable a response signal from the RFID circuit, and decoding the response signal so as to identify the antenna. | 08-21-2008 |
20090122909 | RADIO FREQUENCY TRANSMITTER - The invention concerns a radio frequency transmitter (RFT) and a method of amplifying a radio frequency input signal (S | 05-14-2009 |
20090305665 | METHOD OF IDENTIFYING A TRANSMITTING DEVICE - An exemplary method of identifying a transmitting device includes receiving a signal. A discrete Fourier transform of at least one portion of the signal produces a plurality of frequencies that indicate at least one unique characteristic of the transmitting device. A determination is made whether the transmitting device is a known device based upon the plurality of frequencies. | 12-10-2009 |
20100060353 | Power amplifier linearization using RF feedback - The power amplifier mainly includes a main amplifier, two splitters, one combiner, one subtracter, two phase shifters, one attenuator and one error amplifier. The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in phase and 90° phase shift terminals, the reflection wave is lacking at the main input terminal and, consequently, the input voltage standing wave ratio of a quadrature hybrid does not depend on the equal load mismatch level. | 03-11-2010 |
20130057447 | CALIBRATION OF ACTIVE ANTENNA ARRAYS FOR MOBILE TELECOMMUNICATIONS - In order to calibrate in amplitude and phase the individual transceiver elements ( | 03-07-2013 |
20130079060 | CALIBRATION - An active transceiver array for a wireless telecommunications network. The transceiver array comprises a plurality of calibratable transceiver modules. Each transceiver module comprises a transceiver chain operable to process a primary signal and generate a processed primary signal; a comparator unit operable to compare said primary signal and said processed primary signal to determine a transceiver chain error induced by said transceiver chain in said processed primary signal; and a correction unit which uses the transceiver error to correct said primary signal to be processed by said transceiver chain. | 03-28-2013 |
20140022958 | PRINTED CIRCUIT BOARD AND DIPLEXER CIRCUIT - A printed circuit board | 01-23-2014 |
20140036777 | ACTIVE ANTENNA ARRAYS - In order to reduce the weight, cost and complexity of an active antenna array, designed for use with a plurality of different mobile telecommunications systems (multi-band system), the array comprises a plurality of antenna elements, which are divided into a plurality of antenna groups; a plurality of RF transceivers, which are divided into transceiver sets, wherein each transceiver of a set is arranged to operate on a different mobile telecommunications system, and including respective phase shifting and feeding networks coupled between each transceiver set and a respective antenna group, so that each transceiver of a set is coupled to each antenna element of the respective antenna group. | 02-06-2014 |