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1. 发明授权

US08823469B2 Saw filter and a receiver for remote keyless entry and tire pressure monitoring systems using same 有权
标题翻译：用于远程无钥匙进入的锯片过滤器和接收器以及使用它的轮胎压力监测系统
公开(公告)号：US08823469B2
公开(公告)日：2014-09-02
申请号：US13201425
申请日：2010-02-17
申请人： Thomas Telgmann
发明人： Thomas Telgmann
IPC分类号： H03H9/64 , G08C17/02 , H04B1/16 , H03H9/02 , B60C23/04 , B60R25/24 , G07C9/00
CPC分类号： H03H9/6476 , B60C23/0418 , B60R25/24 , G07C2009/00261 , G07C2009/00769 , G08C17/02 , H03H9/02551 , H03H9/6433 , H03H9/644 , H03H9/6469
摘要： A SAW filter includes at least four electrically interconnected DMS tracks. First and second tracks of the at least four DMS tracks are connected in parallel in opposite directions to form a first filter element. The first and second tracks have two resonant frequencies that are offset from one another from track to track within the first filter element such that they define a common passband by virtue of a lower-frequency resonance of the first track being in phase at the same frequency as a higher-frequency resonance of the second track. Third and fourth tracks of the at least four DMS tracks can be connected in a similar fashion to form a second filter element. The passbands of the first and second filter elements are offset from one another and each comprise one of two channels of a two-channel filter.
摘要翻译： SAW滤波器包括至少四个电互连DMS轨道。至少四个DMS轨道的第一和第二轨迹在相反方向上并联连接以形成第一过滤元件。第一和第二轨道具有在第一滤波器元件内彼此偏离轨道到轨道的两个谐振频率，使得它们通过第一轨道的相同频率处于相同频率的较低频率谐振来限定公共通带作为第二轨道的高频共振。可以以类似的方式连接至少四个DMS轨道的第三和第四轨道以形成第二过滤元件。第一和第二滤波器元件的通带彼此偏移并且各自包括双通道滤波器的两个通道之一。

2. 发明申请

US20120001727A1 SAW FILTER 有权
标题翻译： SAW滤波器
公开(公告)号：US20120001727A1
公开(公告)日：2012-01-05
申请号：US13201425
申请日：2010-02-17
申请人： Thomas Telgmann
发明人： Thomas Telgmann
IPC分类号： G08B29/00 , H03H9/64
CPC分类号： H03H9/6476 , B60C23/0418 , B60R25/24 , G07C2009/00261 , G07C2009/00769 , G08C17/02 , H03H9/02551 , H03H9/6433 , H03H9/644 , H03H9/6469
摘要： A SAW filter includes at least four electrically interconnected DMS tracks. First and second tracks of the at least four DMS tracks are connected in parallel in opposite directions to form a first filter element. The first and second tracks have two resonant frequencies that are offset from one another from track to track within the first filter element such that they define a common passband by virtue of a lower-frequency resonance of the first track being in phase at the same frequency as a higher-frequency resonance of the second track. Third and fourth tracks of the at least four DMS tracks can be connected in a similar fashion to form a second filter element. The passbands of the first and second filter elements are offset from one another and each comprise one of two channels of a two-channel filter.
摘要翻译： SAW滤波器包括至少四个电互连DMS轨道。至少四个DMS轨道的第一和第二轨迹在相反方向上并联连接以形成第一过滤元件。第一和第二轨道具有在第一滤波器元件内彼此偏离轨道到轨道的两个谐振频率，使得它们通过第一轨道的相同频率处于相同频率的较低频率谐振来限定公共通带作为第二轨道的高频共振。可以以类似的方式连接至少四个DMS轨道的第三和第四轨道以形成第二过滤元件。第一和第二滤波器元件的通带彼此偏移并且各自包括双通道滤波器的两个通道之一。

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