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

US20200021253A1 SYSTEM AND METHOD FOR RF AMPLIFIERS 审中-公开
公开(公告)号：US20200021253A1
公开(公告)日：2020-01-16
申请号：US16522080
申请日：2018-02-15
申请人： Fadhel Ghannouchi , Andrew Kwan , Mayada Younes , Mohamed Helaoui
发明人： Fadhel Ghannouchi , Andrew Kwan , Mayada Younes , Mohamed Helaoui
IPC分类号： H03F1/32 , H03F3/20
摘要： A digital predistorter comprising a first predistorter for generating out-of-band and inter-band distortion components for compensating for the static nonlinearity of a nonlinear element, and a second predistorter cascaded with the first predistorter, the second predistorter compensating for the in-band distortion of the nonlinear device wherein the cascade of the first predistorter and the second predistorter compensate for in-band, out-of-band and inter-band distortions when the cascade of the first, the second predistorter and the nonlinear element are driven with multiband signals.

2. 发明授权

US09461675B2 System and method for enhanced transmitter efficiency 有权
标题翻译：提高发射机效率的系统和方法
公开(公告)号：US09461675B2
公开(公告)日：2016-10-04
申请号：US14631375
申请日：2015-02-25
申请人： Fadhel M. Ghannouchi , Mehdi Vejdaniamiri , Mohamed Helaoui
发明人： Fadhel M. Ghannouchi , Mehdi Vejdaniamiri , Mohamed Helaoui
IPC分类号： H04L27/36 , H04B1/04 , H04L27/08
CPC分类号： H04W56/0035 , H03F1/02 , H03F3/24 , H04B1/04 , H04B2001/0408 , H04B2001/045 , H04L25/03012 , H04L25/03343 , H04L27/08 , H04L27/368 , H04W74/004 , H04W74/006 , H04W88/02 , H04W88/08
摘要： A method for distortion compensation in a transmission link comprising obtaining information of an amplitude distribution of a signal prior to being transmitted by a transmitter, receiving the transmitted signal at a receiver and determining a received signal amplitude distribution, comparing the received signal amplitude distribution to the amplitude distribution of the signal prior to transmission and using results of the comparison to estimate the AM/AM non-linearity in the transmitter.
摘要翻译：一种用于传输链路中的失真补偿的方法，包括：在由发射机发送之前获取信号的振幅分布的信息，在接收机处接收所发射的信号，并确定接收的信号幅度分布，将接收到的信号幅度分布与在传输之前信号的幅度分布和使用比较结果来估计发射机中的AM / AM非线性度。

3. 发明申请

US20150036766A1 LEVEL DE-MULTEPLEXED DELTA SIGMA MODULATOR BASED TRANSMITTER 有权
标题翻译：基于水平的多路复用的基于三角形信号调制器的发射机
公开(公告)号：US20150036766A1
公开(公告)日：2015-02-05
申请号：US13958088
申请日：2013-08-02
申请人： Fahmi ELSAYED , Mohamed HELAOUI , Fadhel GHANNOUCHI , Mojtaba EBRAHIMI , Bradley John MORRIS
发明人： Fahmi ELSAYED , Mohamed HELAOUI , Fadhel GHANNOUCHI , Mojtaba EBRAHIMI , Bradley John MORRIS
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/02 , H03F3/24 , H03M3/02 , H03M3/50 , H03M7/302 , H03M7/3026 , H03M7/304 , H04B1/02 , H04B2001/045
摘要： This specification discloses a level de-multiplexed DSM based transmitter and a method for providing the same. Broadly embodiments of the present specification enable wireless transmitters that are based on multi-level de-multiplexed DSM. A three-level de-multiplexed DSM based transmitter is disclosed as an example. More generally, the use of m-level de-multiplexed DSM is also taught, the specification thereby being enabling for broader applications to a person skilled in the art. At least one of the efficiency and linearity of transmitters can be enhanced as required for specific applications by a person of skill in the art in view of this specification and the teachings of its disclosed embodiments.
摘要翻译：本说明书公开了一种基于水平解复用DSM的发射机及其提供方法。本说明书的广义实施例使得能够基于多级解复用DSM的无线发射机。作为示例公开了一种基于三电平解复用DSM的发射机。更通常地，还教导了使用m级解复用DSM，因此该说明书使得能够为本领域技术人员提供更广泛的应用。考虑到本说明书及其公开的实施例的教导，可以根据本领域技术人员的特定应用的要求来增强发射机的效率和线性度中的至少一个。

4. 发明授权

US08724733B2 All-digital multi-standard transmitters architecture using delta-sigma modulators 有权
标题翻译：全数字多标准发射机架构采用delta-sigma调制器
公开(公告)号：US08724733B2
公开(公告)日：2014-05-13
申请号：US12442214
申请日：2008-01-11
申请人： Fadhel M. Ghannouchi , Mohamed Helaoui , Safar Hatami , Renato Negra
发明人： Fadhel M. Ghannouchi , Mohamed Helaoui , Safar Hatami , Renato Negra
IPC分类号： H04L27/00
CPC分类号： H04L27/361 , H03F3/217 , H03M7/3024 , H03M7/3037 , H04B1/0483
摘要： The present disclosure is concerned with a digital transmitter using Delta-Sigma modulators (DMSs) that uses an up-sampler and modulator block that follows the DSMs to generate the RF equivalent of the baseband signal to be transmitted. The up-sampler and modulator block is simple to implement and contains only one or a few multiplexers implemented in high speed logic technology.
摘要翻译：本公开涉及使用Δ-Σ调制器（DMS）的数字发射机，其使用跟随DSM的上采样器和调制器块来产生要发射的基带信号的RF等效物。上采样器和调制器模块易于实现，并且只包含一个或几个在高速逻辑技术中实现的多路复用器。

5. 发明申请

US20210211147A1 DIGITAL MULTI-BAND PREDISTORTION LINEARIZER WITH NON-LINEAR SUBSAMPLING ALGORITHM IN THE FEEDBACK LOOP 有权
公开(公告)号：US20210211147A1
公开(公告)日：2021-07-08
申请号：US17207614
申请日：2021-03-20
申请人： Fadhel M. GHANNOUCHI , Aidin BASSAM , Mohamed HELAOUI , Andrew KWAN
发明人： Fadhel M. GHANNOUCHI , Aidin BASSAM , Mohamed HELAOUI , Andrew KWAN
IPC分类号： H04B1/04 , H04L25/03 , H03F3/189 , H03F1/32 , H03F3/24
摘要： A concurrent multi-band linearized transmitter (CMLT) has a concurrent digital multi-band predistortion block (CDMPB) and a concurrent multi-band transmitter (CMT) connected to the CDMPB. The CDMPB can have a plurality of digital baseband signal predistorter blocks (DBSPBs), an analyzing and modeling (A&M) stage, and a signal observation feedback loop. Each DBSPB can have a plurality of inputs, each corresponding to a single frequency band of the multi-band input signal, and its output corresponding to a single frequency band; each output connect corresponding to an input of the CMLT. The A&M stage can have a plurality of outputs connected to and updating the parameters of the DBSPBs, and a plurality of inputs connected to either both outputs of the signal observation loop or the output of the subsampling loop and to outputs of the DBSPBs. The A&M stage can perform signals' time alignment, reconstruction of signals and compute parameters of DBSPBs.

6. 发明授权

US09071303B2 Level de-multiplexed delta sigma modulator based transmitter 有权
标题翻译：基于水平解复用的Δ-Σ调制器的发射机
公开(公告)号：US09071303B2
公开(公告)日：2015-06-30
申请号：US13958088
申请日：2013-08-02
申请人： Fahmi Elsayed , Mohamed Helaoui , Fadhel Ghannouchi , Mojtaba Ebrahimi , Bradley John Morris
发明人： Fahmi Elsayed , Mohamed Helaoui , Fadhel Ghannouchi , Mojtaba Ebrahimi , Bradley John Morris
IPC分类号： H03M3/00 , H04B1/04 , H03M3/02 , H04B1/02
CPC分类号： H04B1/0475 , H03F1/02 , H03F3/24 , H03M3/02 , H03M3/50 , H03M7/302 , H03M7/3026 , H03M7/304 , H04B1/02 , H04B2001/045
摘要： This specification discloses a level de-multiplexed DSM based transmitter and a method for providing the same. Broadly embodiments of the present specification enable wireless transmitters that are based on multi-level de-multiplexed DSM. A three-level de-multiplexed DSM based transmitter is disclosed as an example. More generally, the use of m-level de-multiplexed DSM is also taught, the specification thereby being enabling for broader applications to a person skilled in the art. At least one of the efficiency and linearity of transmitters can be enhanced as required for specific applications by a person of skill in the art in view of this specification and the teachings of its disclosed embodiments.
摘要翻译：本说明书公开了一种基于水平解复用DSM的发射机及其提供方法。本说明书的广义实施例使得能够基于多级解复用DSM的无线发射机。作为示例公开了一种基于三电平解复用DSM的发射机。更通常地，还教导了使用m级解复用DSM，因此该说明书使得能够为本领域技术人员提供更广泛的应用。考虑到本说明书及其公开的实施例的教导，可以根据本领域技术人员的特定应用的要求来增强发射机的效率和线性度中的至少一个。

7. 发明申请

US20100183093A1 All-Digital Multi-Standard Transmitters Architecture Using Delta-Sigma Modulators 有权
标题翻译：使用Delta-Sigma调制器的全数字多标准发射机架构
公开(公告)号：US20100183093A1
公开(公告)日：2010-07-22
申请号：US12442214
申请日：2008-01-11
申请人： Fadhel M. Ghannouchi , Mohamed Helaoui , Safar Hatami , Renato Negra
发明人： Fadhel M. Ghannouchi , Mohamed Helaoui , Safar Hatami , Renato Negra
IPC分类号： H04L27/12 , H04L27/00
CPC分类号： H04L27/361 , H03F3/217 , H03M7/3024 , H03M7/3037 , H04B1/0483
摘要： The present disclosure is concerned with a digital transmitter using Delta-Sigma modulators (DMSs) that uses an up-sampler and modulator block that follows the DSMs to generate the RF equivalent of the baseband signal to be transmitted. The up-sampler and modulator block is simple to implement and contains only one or a few multiplexers implemented in high speed logic technology.
摘要翻译：本公开涉及使用Δ-Σ调制器（DMS）的数字发射机，其使用跟随DSM的上采样器和调制器块来产生要发射的基带信号的RF等效物。上采样器和调制器模块易于实现，并且只包含一个或几个在高速逻辑技术中实现的多路复用器。

8. 发明授权

US11588520B2 Multi-cell processing architectures for modelling and impairment compensation in multi-input multi-output systems 有权
公开(公告)号：US11588520B2
公开(公告)日：2023-02-21
申请号：US17367451
申请日：2021-07-05
申请人： Fadhel M. Ghannouchi , Aidin Bassam , Mohamed Helaoui , Ramzi Darraji
发明人： Fadhel M. Ghannouchi , Aidin Bassam , Mohamed Helaoui , Ramzi Darraji
IPC分类号： H04L1/02 , H04B7/0417 , H04L25/03 , H04B1/04 , H04B7/0456 , H04B7/06
摘要： A method for predistortion including receiving a plurality of input signals forming a multiple-input signal in a multiple-input multiple-output system, generating a pre-distorted multiple-input signal from the received multiple-input signal, generating a multiple-output signal by feeding the pre-distorted multiple-input signal into a multiple-input and multiple-output transmitter, estimating impairments generated by the multiple-input and multiple-output transmitter, the impairments including nonlinear crosstalk between distinct ones of the plurality of input signals; and adjusting the pre-distorted multiple-input signal to compensate for the estimated impairments.

9. 发明申请

US20110273187A1 PASSIVE SOURCE AND LOAD-PULL ARCHITECTURE FOR HIGH REFLECTION FACTOR SYNTHESIS 有权
标题翻译：被动源和负载结构用于高反射因子合成
公开(公告)号：US20110273187A1
公开(公告)日：2011-11-10
申请号：US13097303
申请日：2011-04-29
申请人： FADHEL M. GHANNOUCHI , Souheil Ben Smida , Mohammad Shabi Hashmi , Mohamed Helaoui
发明人： FADHEL M. GHANNOUCHI , Souheil Ben Smida , Mohammad Shabi Hashmi , Mohamed Helaoui
IPC分类号： G01R27/02
CPC分类号： G01R27/32
摘要： An enhanced loop in a passive tuner consists of an extremely low loss coupler and a high directivity circulator. In the case of source reflection factor synthesis, a passive loop generates an additional incident traveling wave. This wave, added to the primary incident traveling wave, augments the traveling wave and thus increases the magnitude of the synthesized reflection factor at the source port of a device, such as a transistor. In the case of load reflection factor synthesis, the passive loop augments the initial reflected traveling wave by pumping an additional traveling wave. This additional traveling wave helps in synthesizing a higher load reflection factor at the load port. This architecture is capable of high reflection factor synthesis that enables load synthesis even on the border of the Smith chart. There is no problem of instability with the architecture of the present invention.
摘要翻译：无源调谐器中的增强型环路由极低损耗耦合器和高方向性循环器组成。在源反射因子合成的情况下，无源环路产生附加的入射行波。加在主入射行波上的波加大了行波，从而增加了晶体管等器件的源极端的合成反射系数的大小。在负载反射因子合成的情况下，被动环通过泵浦附加的行波来增加初始反射行波。这种额外的行波有助于在负载端口合成更高的负载反射系数。该架构能够进行高反射因子合成，即使在史密斯圆图的边界也能进行负载合成。本发明的架构不存在不稳定的问题。

10. 发明申请

US20210409079A1 MULTI-CELL PROCESSING ARCHITECTURES FOR MODELLING AND IMPAIRMENT COMPENSATION IN MULTI-INPUT MULTI-OUTPUT SYSTEMS 有权
公开(公告)号：US20210409079A1
公开(公告)日：2021-12-30
申请号：US17367451
申请日：2021-07-05
申请人： Fadhel M. GHANNOUCHI , Aidin BASSAM , Mohamed HELAOUI , Ramzi DARRAJI
发明人： Fadhel M. GHANNOUCHI , Aidin BASSAM , Mohamed HELAOUI , Ramzi DARRAJI
IPC分类号： H04B7/0417 , H04L25/03 , H04B1/04 , H04B7/0456 , H04B7/06
摘要： A method for predistortion comprising receiving a plurality of input signals forming a multiple-input signal in a multiple-input multiple-output system, generating a pre-distorted multiple-input signal from the received multiple-input signal, generating a multiple-output signal by feeding the pre-distorted multiple-input signal into a multiple-input and multiple-output transmitter, estimating impairments generated by the multiple-input and multiple-output transmitter, the impairments comprising nonlinear crosstalk between distinct ones of the plurality of input signals; and adjusting the pre-distorted multiple-input signal to compensate for the estimated impairments.

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