专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20190068292A1 RECEIVERS WITH AUTOMATIC GAIN CONTROL 审中-公开
公开(公告)号：US20190068292A1
公开(公告)日：2019-02-28
申请号：US15768975
申请日：2015-10-29
申请人： Hewlett Packard Enterprise Development LP
发明人： Kehan Zhu , Cheng Li , Marco Florentino
IPC分类号： H04B10/69 , H04B10/25 , H04L25/49
CPC分类号： H04B10/6931 , H04B10/25 , H04B10/2507 , H04B10/693 , H04L25/4917
摘要： One example of a receiver includes a first stage, a second stage, a third stage, and an automatic gain controller. The first stage amplifies an input signal to provide a first signal. The second stage amplifies or attenuates the first signal to provide a second signal based on a tunable gain of the second stage. The tunable gain is adjusted in response to a differential signal. The third stage amplifies the second signal to provide an output signal. The automatic gain controller provides the differential signal based on a comparison between a peak voltage of the output signal and the sum of a common mode voltage of the output signal and an offset voltage.

2. 发明申请

US20180091232A1 ACTIVE DEMODULATION SYSTEMS AND METHODS FOR OPTICAL SIGNALS 审中-公开
公开(公告)号：US20180091232A1
公开(公告)日：2018-03-29
申请号：US15717670
申请日：2017-09-27
申请人： RAYTHEON COMPANY
发明人： Benjamin P. Dolgin , Gary M. Graceffo , Andrew Kowalevicz
IPC分类号： H04B10/69 , H01S3/13 , H01S3/131
CPC分类号： H04B10/6931 , H01S3/08 , H01S3/08031 , H01S3/094 , H01S3/094076 , H01S3/10053 , H01S3/10092 , H01S3/1305 , H01S3/1307 , H01S3/131 , H04B10/672 , H04B10/676 , H04B2210/252
摘要： Aspects are generally directed to receivers and methods for actively demodulating optical signals. In one example, a receiver includes an optical resonator to receive an optical signal, the optical resonator including an active optical medium interposed between first and second semi-reflective surfaces, where the active optical medium is configured to accumulate resonant optical signal energy inside the optical resonator based on the received optical signal, the second semi-reflective surface is positioned to emit output optical signal energy, and the optical resonator is configured to disturb the output optical signal energy in response to a variation in the received optical signal. The receiver may further include a detector configured to detect the disturbance in the output optical signal energy, and a pump source coupled to the active optical medium to excite the active optical medium to generate an optical gain in the received optical signal.

3. 发明申请

US20180091231A1 Transimpedance Amplifier For High-Speed Optical Communications Based On Linear Modulation 审中-公开
公开(公告)号：US20180091231A1
公开(公告)日：2018-03-29
申请号：US15675927
申请日：2017-08-14
申请人： Knowledge Development for POF SL
发明人： Alberto Rodriguez-Perez , Luis Rolindez Alberich , Ruben Perez de Aranda Alonso
IPC分类号： H04B10/69 , H03G1/00 , H03F3/45
CPC分类号： H04B10/6931 , H03F3/45475 , H03F2203/45116 , H03F2203/45138 , H03F2203/45288 , H03G1/0035 , H03G3/001 , H03G3/3084 , H04B10/6933
摘要： This invention relates to a optical receiver circuit (200) comprising: at least one photo detector (207) configured to convert a received light signal to an input current signal, a transimpedance amplifier circuit (201) with an input to receive the input current signal from the at least one photo detector (207) and being configured to convert the received input current signal to an output voltage signal to generate an output signal of the transimpedance amplifier circuit (201), wherein the transimpedance amplifier circuit comprises a plurality of gain amplifier stages (209, 210, 211), a DC restoration component (205), wherein the DC restoration component (205) is configured to receive the output voltage signal of the transimpedance amplifier circuit (201) for restoring the DC component of the received current signal and configured for outputting a corresponding current signal, and an automatic gain control component (204) configured for controlling via at least one programmable feedback resistor (226, 227) the equivalent transimpedance of the transimpedance amplifier circuit based on the signal output by the DC restoration component (205) to provide a constant output voltage amplitude for different current ranges of the input current signal.

4. 发明授权

US09899969B1 Transimpedance amplifier with variable inductance input reducing peak variation over gain 有权
公开(公告)号：US09899969B1
公开(公告)日：2018-02-20
申请号：US15683444
申请日：2017-08-22
申请人： INPHI CORPORATION
发明人： Tom Broekaert
IPC分类号： H03F3/08 , H03F1/34 , H04B10/25 , H04B10/54 , H04Q11/00
CPC分类号： H03F3/082 , H03F1/086 , H03F1/3211 , H03F1/342 , H03F3/45179 , H03F2200/339 , H03F2203/45528 , H04B10/2504 , H04B10/541 , H04B10/6931 , H04Q11/0005 , H04Q2011/0039 , H04Q2011/0041
摘要： A transimpedance amplifier (TIA) structure includes an input node with a variable inductance component serving to reduce variation in peak amplitude over different gain conditions. According to certain embodiments, an inductor at the TIA input has a first node in communication with a Field Effect Transistor (FET) drain, and a second node in communication with the FET source. A control voltage applied to the FET gate effectively controls the input inductance by adding a variable impedance across the inductor. Under low gain conditions, lowering of inductance afforded by the control voltage applied to the FET reduces voltage peaking. TIAs in accordance with embodiments may be particularly suited to operate over a wide dynamic range to amplify incoming electrical signals received from a photodiode.

5. 发明申请

US20170180057A1 OPTICAL RECEIVER MODULE 有权
公开(公告)号：US20170180057A1
公开(公告)日：2017-06-22
申请号：US15365992
申请日：2016-12-01
申请人： Oclaro Japan, Inc.
发明人： Riu HIRAI
IPC分类号： H04B10/69 , H04B10/25
CPC分类号： H04B10/6933 , H04B10/2504 , H04B10/2513 , H04B10/6931 , H04B10/695 , H04B10/697
摘要： Provided is an optical receiver module which includes a conversion unit which converts an input optical signal to an electrical signal, an amplification unit which amplifies the electrical signal and outputs an amplified signal, a reception unit which directly or indirectly receives the amplified signal, and an offsetting unit which offsets the electrical signal such that a difference between a center of an intensity width of the electrical signal and a center of an intensity range of a signal capable of being received by the reception unit becomes small.

6. 发明授权

US09621972B2 Burst-mode receiver 有权
公开(公告)号：US09621972B2
公开(公告)日：2017-04-11
申请号：US14813081
申请日：2015-07-29
申请人： ROCKLEY PHOTONICS LIMITED
发明人： David Arlo Nelson
IPC分类号： H04B10/00 , H04Q11/00 , H03F3/08
CPC分类号： H03F3/08 , H04B10/6931 , H04Q11/0066 , H04Q11/0071
摘要： Provided is a burst-mode receiver configured to receive an optical signal having a preamble and a data payload, the burst-mode receiver including a first bias resistor coupled between a first voltage supply and a photosensor, a first capacitor coupled between the photosensor and an amplifier, a first common-mode resistor configured to supply a voltage of a common-mode voltage supply to the amplifier, a first bypass switch configured to couple the first capacitor to the common-mode voltage supply while bypassing the first common-mode resistor, and a first data switch configured to couple the first capacitor to the amplifier, and to couple the first capacitor to the common-mode voltage supply through the first common-mode resistor.

7. 发明申请

US20170048005A1 HIGH-BANDWIDTH UNDERWATER DATA COMMUNICATION SYSTEM 审中-公开
标题翻译：高带宽水下数据通信系统
公开(公告)号：US20170048005A1
公开(公告)日：2017-02-16
申请号：US15334486
申请日：2016-10-26
申请人： Fairfield Industries Incorporated
发明人： Philip Lacovara
IPC分类号： H04B10/80 , H04B10/50 , G08C23/04
CPC分类号： H04B10/80 , G08C23/04 , H04B10/112 , H04B10/1123 , H04B10/503 , H04B10/6931 , H04B13/02 , H04L27/2601 , H04L27/2697
摘要： An apparatus is described which uses directly modulated InGaN Light-Emitting Diodes (LEDs) or InGaN lasers as the transmitters for an underwater data-communication device. The receiver uses automatic gain control to facilitate performance of the apparatus over a wide-range of distances and water turbidities.
摘要翻译：描述了使用直接调制的InGaN发光二极管（LED）或InGaN激光器作为水下数据通信设备的发射器的装置。接收机使用自动增益控制，以便在宽范围的距离和水浊度下促进设备的性能。

8. 发明授权

US09525495B2 Burst-mode receiver, and method of bias voltage control for APD of burst-mode receiver 有权
标题翻译：突发模式接收机，突发模式接收机APD偏压控制方法
公开(公告)号：US09525495B2
公开(公告)日：2016-12-20
申请号：US14768844
申请日：2013-05-30
申请人： Mitsubishi Electric Corporation
发明人： Masaki Noda , Susumu Ihara , Satoshi Yoshima , Masamichi Nogami
IPC分类号： H04B10/69 , H03F17/00 , H03F3/08 , H04B10/079 , H04Q11/00
CPC分类号： H04B10/6911 , H03F3/08 , H03F17/00 , H03F2200/129 , H04B10/0797 , H04B10/691 , H04B10/6931 , H04Q11/0067 , H04Q2011/0045 , H04Q2011/0083
摘要： A burst-mode receiver for receiving burst optical signals having different intensities by a reversely connected APD, including: a current detection circuit outputting a photocurrent that is generated by APD and is output from a current mirror circuit (CMC) as a voltage proportional to the photocurrent, the CMC being connected in series between a power supply and APD; a peak detector circuit detecting and holding a peak value of the output voltage of the current detection circuit; a resistor connection switching circuit, which is inserted between the CMC and APD, for connecting a series resistor to APD in series by switching; and a comparator outputting a switching signal for switching the resistor connection switching circuit so that the series resistor is connected to APD in series in a case where a voltage detected by the peak detector circuit is equal to or more than a predetermined threshold.
摘要翻译：一种突发模式接收机，用于通过反向连接的APD接收具有不同强度的突发光信号，包括：电流检测电路，输出由APD产生的光电流，并从电流镜电路（CMC）输出为与光电流，CMC在电源和APD之间串联连接; 检测并保持电流检测电路的输出电压的峰值的峰值检测电路; 一个插在CMC和APD之间的电阻器连接开关电路，通过开关将串联电阻串联连接到APD; 以及比较器，输出用于切换电阻器连接切换电路的开关信号，使得串联电阻器在由峰值检测器电路检测的电压等于或大于预定阈值的情况下串联连接到APD。

9. 发明授权

US09374172B2 Optical receiver, optical reception device, and correction method for optical received intensity 有权
标题翻译：光接收机，光接收装置和光接收强度校正方法
公开(公告)号：US09374172B2
公开(公告)日：2016-06-21
申请号：US13641822
申请日：2011-04-15
申请人： Yasuyuki Suzuki
发明人： Yasuyuki Suzuki
IPC分类号： H04B10/06 , H04B10/08 , H04B10/69
CPC分类号： H04B10/6931
摘要： In the optical receiver available for the RZ-DPSK modulation system, the difference in the received intensity due to the difference in the intensity or optical path of the optical signal cannot be corrected automatically, therefore, an optical receiver according to an exemplary aspect of the invention includes a first photodiode receiving a normal phase optical signal from a first output of a 1-bit delayed interferometer and outputting a positive signal; a second photodiode receiving a reversed phase optical signal from a second output of the 1-bit delayed interferometer and outputting a complementary signal; a differential transimpedance amplifier inputting the positive signal and the complementary signal and including a closed feedback loop for each input of the positive signal and the complementary signal; a level adjustment unit adjusting a signal level in the closed feedback loop; a photoelectric current detection unit detecting a photoelectric current generated in each of the first photodiode and the second photodiode; and wherein the level adjustment unit adjusts the signal level on the basis of an output of the photoelectric current detection unit.
摘要翻译：在可用于RZ-DPSK调制系统的光接收机中，不能自动校正由于光信号的强度或光路的差异引起的接收强度差，因此，根据本发明的示例性方面的光接收机本发明包括第一光电二极管，其接收来自1位延迟干涉仪的第一输出的正相光信号并输出正信号; 从所述1比特延迟干涉仪的第二输出接收反相光信号并输出互补信号的第二光电二极管; 输入正信号和互补信号的差分跨阻放大器，并且包括用于正信号和互补信号的每个输入的闭合反馈环路; 电平调整单元，调整闭合反馈回路中的信号电平; 检测在所述第一光电二极管和所述第二光电二极管中的每一个中产生的光电流的光电流检测单元; 并且其中所述电平调整单元基于所述光电流检测单元的输出来调整所述信号电平。

10. 发明授权

US09094134B2 Optical receiver 有权
标题翻译：光接收机
公开(公告)号：US09094134B2
公开(公告)日：2015-07-28
申请号：US14003139
申请日：2011-04-05
申请人： Masaki Noda , Masamichi Nogami , Junichi Nakagawa
发明人： Masaki Noda , Masamichi Nogami , Junichi Nakagawa
IPC分类号： H04B10/69 , H03G3/30
CPC分类号： H04B10/6931 , H03G3/3084 , H04B10/693
摘要： An optical receiver including: a preamplifier capable of changing a conversion gain in accordance with a reception level of a received burst signal; a gain control circuit capable of switching between a fast time constant and a slow time constant; and a convergence determination circuit for outputting a time constant switching signal in accordance with a state of the gain control circuit (transient state or steady state) and a reset signal between the burst signals. This configuration can switch the time constant of the gain control circuit at an appropriate timing.
摘要翻译：一种光接收机，包括：前置放大器，其能够根据接收到的突发信号的接收电平来改变转换增益; 能够在快速时间常数和慢时间常数之间切换的增益控制电路; 和用于根据增益控制电路的状态（瞬态或稳态）输出时间常数切换信号和突发信号之间的复位信号的会聚判定电路。该配置可以在适当的时刻切换增益控制电路的时间常数。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式