| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | POWER AMPLIFIER BIAS CONTROL | EP07814520.8 | 2007-08-29 | EP2102980A1 | 2009-09-23 | ANDERSON, William, David; STORY, David, Ryan; OAKLEY, Michael, Alan |
| A power amplifier circuit (10) for a mobile terminal (100) controls the bias voltage depending on the modulation of the input signal. The power amplifier circuit (10) includes a power amplifier control circuit (18) configured to control power amplifier bias for a first input signal modulation using calibrated bias control values corresponding to a range of transmit power levels, and to control power amplifier bias for said second input signal modulation using adjusted bias control values obtained by adding bias offsets to said calibrated bias control values. | ||||||
| 122 | CURRENT COMSUMPTION REDUCTION WITH LOW POWER AMPLIFIER | EP07729153.2 | 2007-05-15 | EP2087598A1 | 2009-08-12 | TUDOSOIU, Bogdan; JOHNSON, Marc; CAMP, William |
| The present invention discloses a transceiver circuit and a method in a wireless communication network, where a signal power level for a signal received at the transceiver circuit is measured and compared to a predefined threshold power level. At least two groups of power amplifiers one optimized for high efficiency above the predefined threshold power level, and optimized for high efficiency below the predefined threshold power level are used to amplify the received signal depending the signal power level in relation to the predefined power threshold level. The signal may then be filtered by duplex filters and forwarded to a diversity (248) or a main antenna whereafter it is transmitted over the air interface. | ||||||
| 123 | TRANSMITTER WITH PRE-CONDITIONING OF AMPLIFIER SIGNAL | EP06799826.0 | 2006-10-03 | EP2030321A1 | 2009-03-04 | ÖSTMAN, Thomas; HAGERMAN, Bo; NORMAN, Mårten |
| A transmitter (20) for a code division multiple access radio access network intelligently preconditions a channel-merged signal which is applied to its amplifier (22) so that the amplifier does not experience, e.g., precipitous power changes. The transmitter (20) comprises an amplifier (22) for amplifying the channel- merged signal at a signal output power; a detector (24) for performing detection of when output power of the channel-merged signal is about to change by a specified amount; and, a noise inserter (26) for adding a noise signal to the channel-merged signal in dependence upon the detection. Insertion of the noise smoothes an edge of the power change curve and thereby averts stress for the amplifier. | ||||||
| 124 | System and method for dynamic drain voltage adjustment to control linearity, output power, and efficiency in RF power amplifiers | EP08151486.1 | 2008-02-15 | EP1959564A3 | 2008-11-19 | Nguyen, Dung C.; Yoon, Soon K.; Khanifar, Ahmad; Devendorf, Don. C. |
A system and method for dynamic adjustment of drain or collector voltage of a power amplifier (PA), including a PA having a voltage input, a temperature sensor (616) measuring ambient temperature of the PA, and an adaptive PA control processor (608) that dynamically changes the input voltage based on the ambient temperature, achieving a desired peak power when the system is subjected to high temperatures. In a further embodiment, a power sensor (614) measures output power of the PA, and the control processor (608) dynamically changes the voltage based on output power when the system serves a large cell in a mobile communication infrastructure employing high power. In a further embodiment, a multistage PA and method include amplifier stages having drain or collector voltage inputs, wherein a voltage applied to the inputs are set so as to be proportional to the peak power requirements of each stage, enhancing overall efficiency.
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| 125 | Amplifier unit and method of detecting failure in the same | EP07107120.3 | 2007-04-27 | EP1852970A1 | 2007-11-07 | Seino, Akira, c/o Fujitsu Limited; Maeda, Hiroaki, c/o Fujitsu Limited; Ono, Takashi, c/o Fujitsu Limited; Okazaki, Yousuke, c/o Fujitsu Limited |
The present invention relates to an amplifier unit and a method of detecting failure, in which failure in a peak amplifier of a Doherty type amplifier unit and also failure in the amplifier unit as a whole can be detected with a simplified configuration. A gate bias voltage of a peak amplifier (1-4) is compared with a predetermined voltage in a failure detection circuit (1-6). Based on the resulting voltage, a first signal indicating presence or absence of failure is output. In addition, the failure detection circuit (1-6) receives an output signal from a gain detection circuit (1-5) that detects reduction in the total gain of an amplifier portion including at least a carrier amplifier (1-3). Then, the failure detection circuit (1-6) outputs a second signal indicating presence or absence of failure, based on the first signal, which indicates anomaly in the gate voltage in the peak amplifier (1-4), and the output signal from the amplifier detection circuit (1-5).
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| 126 | Distortion compensating apparatus and method | EP06252662.9 | 2006-05-22 | EP1819039A1 | 2007-08-15 | Shako, Hideharu c/o Fujitsu Limited; Funyu, Yasuhito c/o Fujitsu Limited; Ohba, Takeshi c/o Fujitsu Limited |
The distortion compensating apparatus, which adaptively updates a distortion compensation coefficient for an amplifier (18) based on a difference between input and output signals of the amplifier (18), comprises: a distortion amount detector (291) which detects the amount of distortion of an output signal of the amplifier (18); a parameter holder (14 and/or 23) which holds a parameter having been set therein; a parameter corrector (292) which corrects the parameter in such a manner that the distortion amount detected by the detector (291) is improved; a power monitor (27) which monitors output power of the amplifier (18) or a factor of variation in the power; and a controller (294) which halts, if a monitoring result by the power monitor (27) is smaller than a specified threshold value, the correction of the parameter. This arrangement makes it possible to accurately set the parameter relating to difference detection which is a factor of updating of distortion compensation coefficients of the distortion compensating apparatus.
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| 127 | METHOD AND APPARATUS FOR DYNAMICALLY ADJUSTING A TRANSMITTER'S IMPEDANCE AND IMPLEMENTING A HYBRID POWER AMPLIFIER THEREIN WHICH SELECTIVELY CONNECTS LINEAR AND SWITCH-MODE POWER AMPLIFIERS IN SERIES | EP05725937.6 | 2005-03-18 | EP1741203A2 | 2007-01-10 | HAQUE, Tanbir; DEMIR, Alpaslan; KAZAKEVICH, Leonid; KLAHN, Gerald |
| A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command. | ||||||
| 128 | A device and method for measuring dependency of output power and for generating a ramp signal for a power amplifier | EP04004980.1 | 2004-03-03 | EP1463197B1 | 2006-10-18 | Langer, Andreas |
| 129 | DISPOSITIF D AMPLIFICATION DE PUISSANCE RADIOFREQUENCE (RF) ET/OU HYPERFREQUENCE, ET TERMINAL DE RADIOCOMMUNICATION CORRESPONDANT | EP04805495.1 | 2004-11-19 | EP1698051A1 | 2006-09-06 | FRON, Grégory |
| The invention relates to a radio frequency (RF) and/or microwave power amplification device which is intended, for example, for a radio communication terminal, comprising means for shielding the device and means for controlling the power delivered as output from said device, said power-control means comprising a power servo loop having power-amplification means, reference means, detection means and comparison means. According to the invention, the aforementioned control means also comprise at least one sensor to detect the energy radiated inside the device. | ||||||
| 130 | DIGITAL BASEBAND SYSTEM AND PROCESS FOR COMPENSATING FOR ANALOG RADIO TRANSMITTER IMPAIRMENTS | EP04751813.9 | 2004-05-10 | EP1632033A2 | 2006-03-08 | DEMIR, Alpaslan; KAZAKEVICH, Leonid; KEARNEY, Kenneth, P. |
| In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a wireless communication transmitter employs a control process to implement numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. By monitoring a plurality of parameters associated with the analog radio, such as temperature, bias current or the like, enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters may be implemented. | ||||||
| 131 | PEAK POWER LIMITATION IN AN AMPLIFIER POOLING SCENARIO | EP02795259.7 | 2002-12-20 | EP1579572A1 | 2005-09-28 | LIPKA, Dietmar |
| A method and a device for performing peak power limitation are described. A transmitter stage (14) according to the invention comprises a distributing component (18) for distributing the accumulated power of beams or sectors according to a specific distribution scheme among a plurality of power amplifiers (261…264). The distributing component (18) superimposes two or more digital beam or sector signals to generate combined signals which are individually subjected to peak power limitation. The combined signals are then individually subjected to digital predistortion, converted to analog and upconverted to RF. The upconverted RF signals are individually amplified by the plurality of power amplifiers (261…264) constituting a power amplifier pool (26). | ||||||
| 132 | 可変包絡線信号の増幅段の製作方法 | JP2018522515 | 2016-11-03 | JP2018536349A | 2018-12-06 | スベルカズ−プン, ジョフロワ; ラピエール, リュック |
| 本発明は、少なくとも1つの増幅器を備える可変包絡線信号のパワー増幅段の製作方法に関する。それぞれの増幅器について、平均パワーPOUTL(PIN)の理想変化の形状が選択される(12)。各々の調整パラメータの各々の値および平均入力パワーの各々の値について、最適化基準の値が、少なくとも1つの最適化パラメータの数学的期待値に応じて計算される(14)。各々の調整パラメータの最適値が決定され(15)、平均出力パワーの値に応じて決定される台数の並列の増幅器と、調整パラメータの最適値をもたらす増幅器ごとの整合回路とを用いて増幅段が製作される(16)。本発明の範囲はそのようにして製作される増幅段に及ぶ。 【選択図】図1 |
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| 133 | デジタルプリディストーション係数の更新を制御する方法及び装置 | JP2013168831 | 2013-08-15 | JP6314388B2 | 2018-04-25 | チェヌ・ペイ; ジョウ・ジャンミン; 岩松 隆則 |
| 134 | 信号増幅処理方法及び装置 | JP2017536853 | 2015-01-12 | JP2018501736A | 2018-01-18 | ホアン、ウェイ; フォン、シアン |
| 本発明の実施形態は、通信技術分野に関し、信号増幅処理方法及び装置を開示する。方法は、信号分解パラメータグループに対してパラメータ値の複数のグループを設定し、パラメータ値の各グループに基づいて、信号増幅処理を別個に実行し、パラメータ値の各グループに対応する電力増幅効率を取得する段階と、パラメータ値の各グループに対応する電力増幅効率における最大電力増幅効率に対応するパラメータ値のグループを取得する段階と、最大電力増幅効率に対応するパラメータ値のグループを、信号分解パラメータグループのパラメータ値として設定する段階と、を含む。電力増幅効率は、本発明を用いることによって向上可能である。 | ||||||
| 135 | 電力調整方法、電力調整プログラム及び電力調整装置 | JP2015551366 | 2013-12-06 | JP6256479B2 | 2018-01-10 | 蜂谷 暢英; 谷井 隆; 村上 康宏; 山森 雄介; 竹内 康顕; 平尾 昌彦; 村上 学; 林原 幹雄 |
| 136 | 無線周波数電力増幅回路 | JP2015539950 | 2013-10-30 | JP6141438B2 | 2017-06-07 | ゴルバチョフ オレクサンドル |
| 137 | 電力調整方法、電力調整プログラム、電力調整装置及び半導体集積回路 | JP2015551366 | 2013-12-06 | JPWO2015083296A1 | 2017-03-16 | 蜂谷 暢英; 暢英 蜂谷; 隆 谷井; 康宏 村上; 山森 雄介; 雄介 山森; 康顕 竹内; 昌彦 平尾; 村上 学; 学 村上; 幹雄 林原 |
| 電力調整方法は、出力電力が所定の値未満となる線形領域では入力電力を線形に増幅し、出力電力が前記所定の値以上となる非線形領域では入力電力を非線形に増幅する電力増幅器に、前記線形領域で増幅される入力電力を入力して得られる出力電力を測定し(S102)、入出力特性を示す座標平面において、測定された出力電力に対応する測定点と前記線形領域及び前記非線形領域の境界点とを結ぶ直線を導出し(S107)、測定された出力電力に対応付けてあらかじめ記憶される近似式であって、前記非線形領域における入力電力と出力電力の関係を示す近似式の情報を取得し(S104〜S106)、導出された直線の情報と取得された近似式の情報とを前記電力増幅器の前段に設けられる半導体集積回路に記憶させる(S108)処理を有する。 | ||||||
| 138 | パワー制御可能な無線通信装置 | JP2015143286 | 2015-07-17 | JP6049817B1 | 2016-12-21 | 高田 裕介; 楠 貢; 岡崎 孝男; 松本 隆; 望月 健太 |
| 【課題】安価で、環境変動に影響されにくいパワー制御が可能な無線通信装置を提供する。 【解決手段】パワー制御が可能な無線通信装置は、ゲインコントロール信号に基づいて、ゲインが制御可能な可変ゲインアンプPGAと、第1基準パワーと、第1基準パワーとは異なる第2基準パワーとを生成する基準パワー生成回路RPGと、可変ゲインアンプから出力される高周波信号のパワー、基準パワー生成回路によって生成された第1基準パワーおよび第2基準パワーが、選択的に供給されるセンサー回路と、センサー回路からのセンサー出力に基づいて、ゲインコントロール信号を生成する制御回路を備える。制御回路は、第1基準パワーに対応した第1センサー出力と、第2基準パワーに対応した第2センサー出力と、高周波信号のパワーに対応した高周波センサー出力との比に基づいて、パワーを制御するとき、ゲインコントロール信号を生成する。 【選択図】図2 |
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| 139 | ＤＣ−ＤＣコンバータによるＧＳＭ−ＧＰＲＳ−ＥＤＧＥ電力増幅器におけるスプリアス除去 | JP2015539950 | 2013-10-30 | JP2015533068A | 2015-11-16 | オレクサンドル ゴルバチョフ |
| GSM/GPRS/EDGEトランシーバのためのスプリアス除去を有する無線周波数(RF)電力増幅回路を開示する。RF入力、RF出力及び電圧供給入力を有する電力増幅器を備える。また、バッテリに接続される入力と、電力増幅器の電圧供給入力に接続される出力と、を有し、DC供給電圧信号を生成する、調整可能なDC−DCコンバータを備える。スプリアス補償器は、DC供給電圧信号におけるスプリアスに対応する誤差制御信号を生成する。誤差制御信号は、電力増幅器のRF電力増幅器入力に印加される。【選択図】図1 | ||||||
| 140 | 電力増幅器によって信号を増幅するための方法、電力増幅器システム、デバイス、コンピュータ・プログラム製品、およびそのデジタル記憶媒体 | JP2013188069 | 2013-09-11 | JP5769771B2 | 2015-08-26 | ボーン,トーマス; ハスラッハ,クリストフ; ユー,シン; ルッツ,ゲルハルト |
