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1. 发明申请

WO2006045176A1 BAND REJECT FILTERS 审中-公开
标题翻译：带拒绝滤波器
公开(公告)号：WO2006045176A1
公开(公告)日：2006-05-04
申请号：PCT/CA2005/001492
申请日：2005-09-30
申请人： NORTEL NETWORKS LIMITED , BEAUDIN, Steve , JIAN, Chun-Yun , SYCHALEUN, Somsack
发明人： BEAUDIN, Steve , JIAN, Chun-Yun , SYCHALEUN, Somsack
IPC分类号： H03H9/64 , H03H9/205 , H03H9/25 , H03H9/54
CPC分类号： H03H9/6409 , H03F3/191 , H03F3/60 , H03F3/602 , H03H9/542 , H03H9/547 , H03H9/706 , H03H9/74
摘要： Band reject filters are disclosed. A band reject filter includes a first acoustic resonator and a second acoustic resonator, each of which has either shunt resonators adapted to resonate substantially at respective resonance frequencies defining a rejection frequency band or series resonators adapted to anti-resonate substantially at respective anti-resonance frequencies defining the rejection frequency band. These resonators are connected through a phase shifter which imparts an impedance phase shift of approximately 45°to 135°. Exemplary applications of the band reject filters disclosed herein include implementation as an inter-stage band reject filter for a base station power amplifier for a wireless communication system, as a radio frequency band reject filter in a duplexer for a wireless communication terminal, and in a low noise amplifier input stage.
摘要翻译：公开了带阻滤波器。带阻滤波器包括第一声谐振器和第二声谐振器，每个谐振器具有适于基本上在限定抑制频带的相应谐振频率谐振的并联谐振器或适于基本上以相应的反谐振频率反共振的串联谐振器定义拒收频带。这些谐振器通过移相器连接，该移相器将阻抗相移约为45°至135°。本文公开的带阻滤波器的示例性应用包括作为无线通信系统的基站功率放大器的级间带宽滤波器的实现，作为用于无线通信终端的双工器的无线电频带拒绝滤波器，以及低噪声放大器输入级。

2. 发明申请

WO2005027535A2 BAND REJECT FILTERS 审中-公开
标题翻译：带拒绝滤波器
公开(公告)号：WO2005027535A2
公开(公告)日：2005-03-24
申请号：PCT/IB2004/002785
申请日：2004-08-27
申请人： NORTEL NETWORKS LIMTIED , BEAUDIN, Steve , SYCHALEUN, Somsack , JIAN, Chun-Yun , ZHANG, Yuxing
发明人： BEAUDIN, Steve , SYCHALEUN, Somsack , JIAN, Chun-Yun , ZHANG, Yuxing
IPC分类号： H04Q
CPC分类号： H03H9/6409 , H03H9/14547 , H03H9/14558 , H03H9/14567 , H03H9/547 , H03H9/605 , H03H9/6433 , H03H9/6463 , H03H9/6476 , H03H9/6483 , H03H9/6493
摘要： Acoustic resonators such as surface acoustic wave (SAW) devices and thin film bulk acoustic resonators (FBAR) can be configured to produce a band reject filter. Such a filter overcomes the insertion loss and power handling limitations of conventional band pass configurations and as such can be used in power amplifier and duplexer applications. Using a SAW filter having a concatenated structure, filter losses and layout comprises are further improved.
摘要翻译：诸如表面声波（SAW）器件和薄膜体声波谐振器（FBAR）之类的声谐振器可被配置成产生带阻滤波器。这种滤波器克服了传统带通配置的插入损耗和功率处理限制，并且因此可以用于功率放大器和双工器应用中。使用具有级联结构的SAW滤波器，滤波器损耗和布局包括进一步改进。

3. 发明申请

WO2016063108A1 RADIO FREQUENCY MULTIPLEXER 审中-公开
标题翻译：无线电频率多路复用器
公开(公告)号：WO2016063108A1
公开(公告)日：2016-04-28
申请号：PCT/IB2014/065517
申请日：2014-10-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , JIAN, Chunyun , SYCHALEUN, Somsack , LIU, Wei
发明人： JIAN, Chunyun , SYCHALEUN, Somsack , LIU, Wei
IPC分类号： H04B1/525
CPC分类号： H04B1/525
摘要： A method and apparatus for routing transmit and receive signals in a radio RF front end. According to one aspect, the disclosure provides a multiplexer method and apparatus for routing transmit signals to an antenna and routing amplified receive signals to a receiver. The multiplexer includes a first hybrid coupler having a first frequency response and at least one other hybrid coupler having a second frequency response. The at least one other hybrid coupler is coupled to the first hybrid coupler by a first and second splitters each cascaded with a set of amplifying circuits for balanced amplification. In some embodiments, the second frequency response complements the first frequency response to increase cancellation of two signals arriving at an output port of the at least one other hybrid coupler from two different paths through the first and the at least one other hybrid couplers.
摘要翻译：一种用于在无线电RF前端中路由发送和接收信号的方法和装置。根据一个方面，本公开提供了一种用于将发射信号路由到天线并将放大的接收信号路由到接收机的多路复用器方法和装置。多路复用器包括具有第一频率响应的第一混合耦合器和具有第二频率响应的至少一个其它混合耦合器。所述至少一个其它混合耦合器通过第一和第二分离器耦合到第一混合耦合器，第一和第二分离器与用于平衡放大的一组放大电路级联。在一些实施例中，第二频率响应补充了第一频率响应，以增加通过第一和至少一个其它混合耦合器从两个不同路径到达至少一个其它混合耦合器的输出端口的两个信号的抵消。

4. 发明申请

WO2005027535A3 BAND REJECT FILTERS 审中-公开
标题翻译：带拒绝滤波器
公开(公告)号：WO2005027535A3
公开(公告)日：2005-05-26
申请号：PCT/IB2004002785
申请日：2004-08-27
申请人： NORTEL NETWORKS LTD , BEAUDIN STEVE , SYCHALEUN SOMSACK , JIAN CHUN-YUN , ZHANG YUXING
发明人： BEAUDIN STEVE , SYCHALEUN SOMSACK , JIAN CHUN-YUN , ZHANG YUXING
IPC分类号： H03F3/189 , H03F3/20 , H03H9/145 , H03H9/58 , H03H9/60 , H03H9/64 , H04Q20060101 , H04Q7/30
CPC分类号： H03H9/6409 , H03H9/14547 , H03H9/14558 , H03H9/14567 , H03H9/547 , H03H9/605 , H03H9/6433 , H03H9/6463 , H03H9/6476 , H03H9/6483 , H03H9/6493
摘要： Acoustic resonators such as surface acoustic wave (SAW) devices and thin film bulk acoustic resonators (FBAR) can be configured to produce a band reject filter. Such a filter overcomes the insertion loss and power handling limitations of conventional band pass configurations and as such can be used in power amplifier and duplexer applications. Using a SAW filter having a concatenated structure, filter losses and layout are further improved.
摘要翻译：诸如表面声波（SAW）器件和薄膜体声波谐振器（FBAR）之类的声谐振器可被配置成产生带阻滤波器。这种滤波器克服了传统带通配置的插入损耗和功率处理限制，并且因此可以用于功率放大器和双工器应用中。使用具有级联结构的SAW滤波器，滤波器损耗和布局进一步提高。

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