| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 330126000 | Amplifying different frequencies in different channels | 11 |
| 20080218260 | MULTIPLE RF PATH AMPLIFIERS - An amplifier is disclosed for providing processing of a variable RF signal, the amplifier comprising a first parallel gain stage and a plurality of second parallel gain stages electrically disposed between an input fixed impedance matching circuit and an output fixed impedance matching circuit. Wherein in operation each of the first parallel gain stage and plurality of second parallel gain stages are for processing the variable RF signal according to at least a characteristic of the RF power or frequency range. Each of the plurality of second parallel gain stages comprising a tunable impedance matching circuit such that when the second parallel gain stage is in operation the tunable impedance matching circuit providing a transformation of impedance to match between the second amplifier and output fixed matching circuit within the frequency range, and other than providing a match within the frequency range when not in operation. | 09-11-2008 |
| 20080231359 | POWER DIVIDER/COMBINER AND POWER DIVIDING/COMBINING METHOD USING THE SAME - A power divider/combiner include a power n-dividing unit for dividing a power of an input signal to n divided signals (n: positive integer not less than 2); n phase adjustment units for adjusting a phase of each of said n divided signals; n amplifiers for amplifying each of said n divided signals after phase adjustment by said n phase adjustment units; and power combining units for combining said n divided signals amplified by said n amplifiers and outputting a power combined signal. | 09-25-2008 |
| 20090243719 | Broadband Amplifying Device - The present invention relates to an amplification device for a satellite in order to amplify a plurality of n transmission channels to an output corresponding to a beam, the device comprising:
| 10-01-2009 |
| 20090295474 | Device with Shared Power Amplifiers, For Use in a Wireless Telecommunications System - The invention discloses a device ( | 12-03-2009 |
| 20110210787 | SWITCHLESS BAND SEPARATION FOR TRANSCEIVERS - A system includes a plurality of band pass filters to pass signals in separated frequency bands to or from an antenna. A matching network provides characteristic impedances. The system is designed such that the configuration of the matching network and BPFs provides high impedance to the band pass filters for those routing paths other than the band pass path as these routing paths do not transmit or receive the signals at this particular pass band. The system is further designed such that the configuration of the matching network and BPFs provides minimal insertion loss for the band pass path of for transmission and receipt of signals at this particular pass band, where each routing path has a corresponding pass band. The matching network is for coupling to an amplifier, when frequency separation is needed at the output of the amplifier to the BPFs. In one embodiment an impedance network tunes the impedance by using varying length transmission lines. | 09-01-2011 |
| 20110221522 | SHARING OF INDUCTOR INTERSTAGE MATCHING IN PARALLEL AMPLIFICATION SYSTEM FOR WIRELESS COMMUNICATION SYSTEMS - A power amplifier system can include a plurality of driver amplifiers and a plurality of power amplifiers, where each driver amplifier and power amplifier includes at least one respective input port and at least one respective output port. The power amplifier system also includes a shared inductive device that provides common interstage matching between the respective output ports of the plurality of driver amplifiers and the respective input ports of the plurality of power amplifiers. The shared inductive device can be a shared inductor or a shared transformer. | 09-15-2011 |
| 20120098595 | QUADRATURE POWER AMPLIFIER ARCHITECTURE - The present disclosure relates to a quadrature RF power amplifier (PA) architecture that uses a single-ended interface to couple a non-quadrature PA path to a quadrature PA path, which may be coupled to an antenna via an antenna port. The quadrature nature of the quadrature PA path provides tolerance for changes in antenna loading conditions. An RF splitter in the quadrature PA path presents a relatively stable input impedance, which is predominantly resistive, to the non-quadrature PA path over a wide frequency range, thereby substantially isolating the non-quadrature PA path from changes in the antenna loading conditions. Further, the input impedance substantially establishes a load line slope of a feeder PA stage in the non-quadrature PA path, thereby simplifying the quadrature RF PA architecture. One embodiment of the quadrature RF PA architecture uses two separate PA paths, either of which may incorporate a combined non-quadrature and quadrature PA architecture. | 04-26-2012 |
| 20120235735 | POWER AMPLIFIER CIRCUIT AND FRONT END CIRCUIT - A power amplifier circuit (DIPPA), comprising a driver stage (DR) which is applicable to provide a preamplified driver signal (S_DR) dependent on a predetermined transmit signal. The power amplifier circuit (DIPPA) comprises also a frequency selector (DIP) which is electrically coupled to the driver stage (DR) and which is applicable to separate the driver signal (S_DR) into a first and second signal (S | 09-20-2012 |
| 20140015603 | Multi-Band/Multi-Mode Power Amplifier with Signal Path Hardware Sharing - Existing multi-band/multi-mode (MB/MM) power amplifiers (PAs) use separate signal paths for the different covered frequency bands. This results in a large degree of hardware duplication and to a large die size and cost. Solutions that achieve hardware sharing between the different signal paths of MB/MM PAs are shown. Such sharing includes bias circuit and bypass capacitors sharing, as well as sharing front-end stages and the output stage of the PA. Signal multiplexing may be realized in the transmitter or at the PA front-end while the signal de-multiplexing can be realized either in the PA output stage or at the front-end of the output stage. Such circuits can be applied with saturated and linear MB/MM PAs with adjacent or non-adjacent bands. | 01-16-2014 |
| 20140240039 | ENHANCED DOHERTY AMPLIFIER - The disclosure relates to an enhanced Doherty amplifier that provides significant performance improvements over conventional Doherty amplifiers. The enhanced Doherty amplifier includes a power splitter, combining node, a carrier path, and a peaking path. The power splitter is configured to receive an input signal and split the input signal into a carrier signal provided at a carrier splitter output and a peaking signal provided at a peaking splitter output. The carrier path includes carrier power amplifier circuitry, a carrier input network coupled between the carrier splitter output and the carrier power amplifier circuitry, and a carrier output network coupled between the carrier power amplifier circuitry and the Doherty combining node. The peaking path includes peaking power amplifier circuitry, a peaking input network coupled between the peaking splitter output and the peaking power amplifier circuitry, and a carrier output network coupled between the power amplifier circuitry and the Doherty combining node. | 08-28-2014 |
| 20160173031 | Envelope Tracking in Connection with Simultaneous Transmission in one or more Frequency Bands | 06-16-2016 |
