| 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 | IMPROVED FILTER FOR SWITCHED MODE POWER SUPPLY | EP09715761.4 | 2009-02-27 | EP2241006B1 | 2015-11-04 | WIMPENNY, Gerard |
| There is provided a filter for receiving a rectangular or stepped source voltage to be filtered and for providing an output voltage, the filter including means arranged to determine the output voltage in dependence on the frequency components of the source voltage within the filter passband, and independent of output current drawn. | ||||||
| 122 | FORWARDED CLOCK JITTER REDUCTION | EP11878713 | 2011-12-30 | EP2798742A4 | 2015-07-08 | ROYTMAN EDUARD EDI; NAGARAJAN MAHALINGAM MALI; VEMPADA PRADEEP R |
| In some embodiments, a differential amplifier with duty cycle correction is provided. | ||||||
| 123 | Harmonics Cancellation Circuit for a Power Amplifier | EP13196361.3 | 2013-12-10 | EP2884659A1 | 2015-06-17 | Ba, Ao |
The present invention relates to a circuit (100) comprising The circuit is characterised by a feedback loop comprising a low pass filtering means (40) arranged for filtering the square wave signal and comparing means (50) arranged for comparing a DC level of a filtered signal received from the low pass filtering means with a pre-set reference level, said reference level selected for cancelling a given harmonic component, said comparing means further arranged for outputting to the first buffering means (10) a correction signal for adjusting the threshold voltage level of the first buffering means.
|
||||||
| 124 | FORWARDED CLOCK JITTER REDUCTION | EP11878713.4 | 2011-12-30 | EP2798742A1 | 2014-11-05 | ROYTMAN, Eduard, Edi; NAGARAJAN, Mahalingam, Mali; VEMPADA, Pradeep, R. |
| In some embodiments, a differential amplifier with duty cycle correction is provided. | ||||||
| 125 | Doherty amplifier and method of operating a Doherty amplifier | EP11290063.4 | 2011-01-31 | EP2482448A1 | 2012-08-01 | Wiegner, Dirk |
The invention relates to a Doherty amplifier (100) comprising a primary amplification path (110) for amplifying an input signal (in), a plurality of secondary amplification paths (120a, 120b) for amplifying specific frequency sub-ranges of said input signal (in), and signal processing means (130) which comprise at least two preprocessing branches (132, 134, 136), wherein a first preprocessing branch (132) is configured to supply said primary amplification path (110) with a primary input signal (in1) derived from said input signal (in), and wherein at least one further preprocessing branch (134, 136) is configured to supply at least one of said secondary amplification paths (120a, 120b) with a secondary input signal (in2, in3) derived from said input signal (in).
|
||||||
| 126 | IMPROVED FILTER FOR SWITCHED MODE POWER SUPPLY | EP09715761.4 | 2009-02-27 | EP2241006A1 | 2010-10-20 | WIMPENNY, Gerard |
| There is provided a filter for receiving a rectangular or stepped source voltage to be filtered and for providing an output voltage, the filter including means arranged to determine the output voltage in dependence on the frequency components of the source voltage within the filter passband, and independent of output current drawn. | ||||||
| 127 | Distortion compensating apparatus and power amplifier apparatus | EP08171103.8 | 2008-12-09 | EP2083516B1 | 2010-10-13 | Utsunomiya, Yuichi; Ishikawa, Hiroyoshi; Fudaba, Nobukazu; Hamada, Hajime; Nagatani, Kazuo |
| 128 | Distortion compensating apparatus and power amplifier apparatus | EP08171103.8 | 2008-12-09 | EP2083516A1 | 2009-07-29 | Utsunomiya, Yuichi; Ishikawa, Hiroyoshi; Fudaba, Nobukazu; Hamada, Hajime; Nagatani, Kazuo |
A distortion compensating apparatus has an adaptive distortion compensating unit to compensate nonlinear distortion by controlling an input signal of a nonlinear distortion circuit by using an adaptive algorithm so as to reduce an error between a reference signal and a feedback signal from the nonlinear distortion circuit; and an adaptive equalizer connected between the adaptive distortion compensating unit and the nonlinear distortion circuit or provided in front of the adaptive distortion compensating unit. The adaptive equalizer includes a digital filter to form an amplitude characteristic and a phase characteristic of the input signal on the basis of a filter coefficient group that is set to the digital filter; a memory to hold in advance the filter coefficient group; and a control unit to control reading of the filter coefficient group from the memory on the basis of the input signal and the feedback signal.
|
||||||
| 129 | METHOD AND APPARATUS FOR ADAPTIVELY CONTROLLING SIGNALS | EP07782556.0 | 2007-04-25 | EP2011260A2 | 2009-01-07 | MCCALLISTER, Ronald, D.; BROMBAUGH, Eric, M. |
| A signal processing system according to various aspects of the present invention includes an excursion signal generator, a scaling system and a filter system. The excursion signal generator identifies a peak portion of a signal that exceeds a threshold and generates a corresponding excursion signal. The scaling system applies a real scale factor to contiguous sets of excursion samples in order to optimize peak-reduction performance. The filter system filters the excursion signal to remove unwanted frequency components from the excursion signal. The filtered excursion signal may then be subtracted from a delayed version of the original signal to reduce the peak. The signal processing system may also control power consumption by adjusting the threshold. The signal processing system may additionally adjust the scale of the excursion signal and/or individual channel signals, such as to meet constraints on channel noise and output spectrum, or to optimize peak reduction. The magnitude threshold, excursion signal and/or individual channel signals may also be adaptively adjusted based on, for example, a channel signal quality such as a noise level specification. | ||||||
| 130 | ELEKTRISCHES MEHRLEITERSYSTEM ZUR GEGENTAKT-SIGNALÜBERTRAGUNG MIT DÄMPFUNGS- ODER FILTERGLIED UND DATENÜBERTRAGUNGSBUS | EP06722552.4 | 2006-03-06 | EP1867065A1 | 2007-12-19 | SCHUBERT, Göran; FISCHER, Thomas |
| The electrical multiple-wire system (1) serves to transmit signals in the push-pull mode and has two signal lines (5, 6) as well as a common reference line (7). Each signal line (5, 6) comprises an attenuating or filtering element (13, 14) with a link (15, 16) running between a branch node (20, 21) in the respective signal line (5, 6) and the reference line (7). The attenuating or filtering element (13, 14) of the respective signal lines (5, 6) are provided with nominally identical dimensions. The link (15, 16) of each attenuating or filtering element (13, 14) comprises a series connection consisting of a first partial branch (17, 18) with a first reactance (23, 24) and of a second partial branch (19) with a second reactance (25). The second partial path (19) is a shared constituent of all attenuating or filtering elements (13, 14). The multiple-line system (1) achieves a very high common mode rejection even when components subjected to tolerances are used in the attenuating or filtering elements (13, 14). | ||||||
| 131 | 무선 주파수 디바이스에서 집적된 CMOS 송/수신 스위치 | KR1020177020794 | 2015-12-29 | KR1020170093252A | 2017-08-14 | 진,얄린; 모타,세튜 |
| 무선주파수(RF) 시스템들의실시예들은하나이상의전력증폭기들및/또는다른컴포넌트들과집적되는송/수신스위치를포함한다. 전력증폭기들은변압기기반아키텍처들을가질수 있으며, 전력증폭기와스위치는단일상보형금속산화물반도체다이에통합될수 있다. | ||||||
| 132 | 고효율 고집적 수신기 | KR1020160010004 | 2016-01-27 | KR1020170089598A | 2017-08-04 | 김기진; 안광호 |
| 고효율고집적수신기가제공된다. 본발명의실시예에따른레이더수신기는, 레이더신호를수신하는수신부, 수신부의수신신호의저주파대역의크기를감쇄시키는처리부, 처리부의출력신호를저주파필터링하는필터부및 필터부의출력신호를 A/D 변환하는 ADC를포함한다. 이에의해, 저해상도의 ADC를사용하면서도다양한거리의목표물에서반사되는신호들을모두복조할수 있게되어, 제조단가와전력소모를낮출수 있게된다. | ||||||
| 133 | 전자 장치 및 그의 안테나 제어 방법 | KR1020150082187 | 2015-06-10 | KR1020160145449A | 2016-12-20 | 김성수; 백민철; 이종인; 장창원; 이승민; 차재민 |
| 본발명의일 실시예에따른전자장치는, 본발명의일 실시예에따른전자장치는, 제1 안테나와, 제2 안테나와, 송수신경로부와, 제1 수신경로부와, LNA를포함하는제2 수신경로부와, 상기제1 안테나및 상기제2 안테나각각을상기송수신경로부, 상기제1 수신경로부또는상기제2 수신경로부중 적어도하나와연결하는신호경로선택부와, 상기제1 안테나와상기송수신경로부가연결되고, 상기제2 안테나와상기제2 수신경로부를연결되는제1 상태가되도록상기신호경로선택부를제어하거나, 또는상기제1 안테나와상기제1 수신경로부가연결되고, 상기제2 안테나와상기송수신경로부가연결되는제2 상태가되도록상기신호경로선택부를제어하는 RFIC 모듈또는상기 RFIC 모듈을포함하는프로세서를포함할수 있다. 또한다른실시예도가능하다. | ||||||
| 134 | 전력증폭기 | KR1020140115184 | 2014-09-01 | KR101669843B1 | 2016-10-27 | 와타나베신타로; 이요마사카즈히로 |
| 차주파를갖는입력잡음을억제가능한소형의전력증폭기가제공된다. 전력증폭기 PA1은, 입력단자 IN과, 증폭트랜지스터(11)와, 바이어스회로(21)와, 필터회로(61)와, 임피던스정합회로 MC1을구비하고있다. 바이어스회로(21)는, 증폭트랜지스터(11)의신호입력측에바이어스를공급할수 있다. 필터회로(61)는, 증폭트랜지스터(11)의신호입력측의노이즈를제거한다. 필터회로(61)는, 정합저항(32), 칩인덕터(52) 및칩 커패시터(43)를구비하고있다. 칩인덕터(52) 및칩 커패시터(43)는모두표면실장부품(SMD)이다. 정합저항(32)은, 반도체기판(1) 위에형성되고, 일단이 MIM 커패시터 42와 MIM 커패시터 41 사이에접속하고, 타단이 MIM 커패시터 42와증폭트랜지스터(11)의신호입력측사이에접속하고있다. | ||||||
| 135 | D급 증폭 회로 | KR1020167013479 | 2014-10-22 | KR1020160074651A | 2016-06-28 | 레소,존폴; 이도,토루 |
| 본출원은향상된전력효율을갖는 D급증폭회로(300)를위한방법및 장치를기술한다. 회로는적어도제1 및제2 스위치를갖는출력단(102)과증폭될입력신호, S와제1 클록신호 f를수신하는변조기(104)를갖는다. 변조기는입력신호에기초한스위칭사이클내에서제1 및제2 스위치의듀티사이클을제어하고, 여기서스위칭사이클은제1 클록신호에기초하여스위칭주파수를갖는다. 주파수제어기(301)는제1 입력신호진폭에서는제1 스위칭주파수를제공하고더 낮은제2 입력신호진폭에서는더 낮은제2 스위칭주파수를제공하기위해입력신호의진폭의표시에응답하여제1 클록신호의주파수를제어한다. 더낮은스위칭주파수는낮은신호진폭들에서허용될수 있고그에따라이러한방식으로스위칭주파수를변경하는것은안정성을유지하면서도스위칭전력손실을감소시킨다. | ||||||
| 136 | 인버티드 토폴로지를 이용한 신호 증폭기 | KR1020130154554 | 2013-12-12 | KR1020150068650A | 2015-06-22 | 성낙균 |
| 본발명은인버티드토폴로지를이용한신호증폭기에관한것으로, 전원전압단에연결되어, 입력신호중제1 대역신호를증폭하는제1 공통소스형증폭부; 접지단에연결되어, 상기입력신호중제2 대역신호를증폭하는제2 공통소스형증폭부; 상기제1 공통소스형증폭부와출력단간제1 대역에대해임피던스매칭을형성하고, 상기제2 공통소스형증폭부와출력단간제2 대역에대해임피던스매칭을형성하는출력매칭부; 를포함하고, 상기제1 공통소스형증폭부, 출력매칭부및 제2 공통소스형증폭부는상기전원전압단과접지단사이의단일전류패스를형성할수 있다. | ||||||
| 137 | 저왜곡 용량성 신호 소스 증폭기를 위한 시스템 및 방법 | KR1020120092515 | 2012-08-23 | KR101459831B1 | 2014-11-07 | 세발로스호세루이스; 크롭피치마이클 |
| 실시예에 따르면, 방법은 용량성 신호 소스에 의해 제공된 신호를 증폭하여 증폭된 신호를 형성하는 단계와, 증폭된 신호의 피크 전압을 검출하는 단계와, 피크 전압의 검출에 응답하여 용량성 신호 소스의 출력에 연결된 제어 가능한 임피던스를 조정하는 단계를 포함한다. 제어 가능한 임피던스는 검출된 피크 전압에 반비례하는 값으로 조정된다.
|
||||||
| 138 | 오디오 앰프 출력 제어 장치 및 방법 | KR1020090127893 | 2009-12-21 | KR1020110071347A | 2011-06-29 | 이성윤 |
| PURPOSE: An audio amplifier output control apparatus and a method thereof are provided to improve no-sound and malfunction of the amplifier, by removing harmonic noise components through fast Fourier transform. CONSTITUTION: An audio amplifier(100) amplifies an audio signal. The audio amplifier outputs the amplified signal to a speaker. A current detection part(50) monitors current variation of Vcc supplied to the audio amplifier. An FFT(Fast Fourier Transform) band analysis part(20) transforms the audio signal into a frequency domain signal. The FFT band analysis part detects an input frequency component. A control part(40) judges shut down entry of the audio amplifier. The control part outputs a PWM(Pulse Width Modulation) control signal with a duty corresponding to the detected component and the input frequency component. An input signal filter part(70) removes the component of the audio signal and the input frequency component by shifting a cutoff frequency. | ||||||
| 139 | 선형 전력 증폭기 제어 방법 | KR1020077002330 | 2005-08-23 | KR100876125B1 | 2008-12-29 | 올섬,앤드류; 도모코스,존 |
| A linear power amplifier filters an instantaneous input signal to generate a filtered input signal, combines the instantaneous input signal and filtered input signal to generate a modified drain source voltage waveform and modulates a switched mode power supply to the linear power amplifier in accordance with the modified waveform. | ||||||
| 140 | 지상파 튜너의 부스터회로 | KR1020060092262 | 2006-09-22 | KR1020080026968A | 2008-03-26 | 최석동 |
| A booster circuit for a terrestrial tuner is provided to attenuate or block the intensity of a signal previously through a rejection filter before the signal with a strong input intensity is amplified by a booster when the unnecessary strong intensity of signal is inputted except a broadcasting channel signal received through an antenna, thereby preventing interference between the unnecessary signal and the broadcasting channel signal and an oscillator killing phenomenon. A booster circuit for a terrestrial tuner comprises a loop-through(20), a citizen band filter(21), a rejection filter(22) and a booster(23). The loop-though outputs a broadcasting channel signal inputted from an antenna(ANT) to other devices. The citizen band filter removes a citizen band signal from a broadcasting channel signal inputted through an antenna. The rejection filter attenuates a frequency band in which there is no broadcasting signal in the broadcasting channel signal. The booster amplifies the broadcasting channel signal outputted from the rejection filter. | ||||||
