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1.发明授权
公开(公告)号：EP1901427B1
公开(公告)日：2011-03-09
申请号：EP07124123.6
申请日：2001-05-31
CPC分类号： H03H9/44 , G01S13/755 , H03H9/0274 , H03H9/14505
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2.发明授权
公开(公告)号：EP1206034B1
公开(公告)日：2007-05-09
申请号：EP01117567.6
申请日：2001-07-20
CPC分类号： H03H9/0274 , H03H7/40 , H03H9/0042 , H03H9/14505 , H03H9/1455 , H03H9/642 , H03H11/30
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3.发明公开A wireless communication system using surface acoustic wave (SAW) second harmonic techniques 有权使用二次谐波表面声波技术的无线通信系统
公开(公告)号：EP1160975A3
公开(公告)日：2002-02-20
申请号：EP01113311.3
申请日：2001-05-31
IPC分类号： H03H9/64
CPC分类号： H03H9/6406 , G01S13/755 , H03H9/0028 , H03H9/0042
摘要： SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. A communication system based on SAW harmonic techniques would be low-cost, low-power, small and simple alternative to known short range communications schemes, including for example the BIuetooth™ solution. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.
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4.发明授权
公开(公告)号：EP1160974B1
公开(公告)日：2008-01-02
申请号：EP01113310.5
申请日：2001-05-31
IPC分类号： H03H9/64
CPC分类号： H03H9/44 , G01S13/755 , H03H9/0274 , H03H9/14505
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5.发明公开A wireless communication system using surface acoustic wave (SAW) single-phase unidirectional transducer (Spudt) techniques 有权übertragungssystemmit einphasigen unidirektionalen akustischenOberflächenwellenwandlertechniken
公开(公告)号：EP1160974A2
公开(公告)日：2001-12-05
申请号：EP01113310.5
申请日：2001-05-31
IPC分类号： H03H9/64
CPC分类号： H03H9/44 , G01S13/755 , H03H9/0274 , H03H9/14505
摘要： SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, conventional SAW expanders and compressors typically have insertion losses greater than 20 dB, which can have a profound effect on an RF link budget in a communication system. Insertion losses are drastically reduced by using a single phase unidirectional transducer (SPUDT-type) instead of a conventional IDT as a SAW expander/compressor. A SPUDT-type reflects SAW components which are lost in conventional IDT designs so that a stronger SAW is directed toward a transmission element. In a receiver, a SPUDT-type directs a stronger SAW toward a compressor IDT. A communication system based on SPUDT-type techniques would be low-cost, low-power, small and simple alternative to known short range communications schemes, including for example the Bluetooth™ solution. Operation of a SAW system at a frequency of 2.4 GHz is contemplated.
摘要翻译： 诸如叉指式换能器（IDT）之类的SAW器件已广泛用于雷达应用和滤波器。 IDT在由单个电脉冲激励时产生SAW，并且可以被制造成体现代码，该代码提供SAW输入到IDT的无源自相关，从而将其进一步应用于通信设备中的信号发生器 。 然而，传统的SAW膨胀器和压缩机通常具有大于20dB的插入损耗，这可以对通信系统中的RF链路预算产生深远的影响。 通过使用单相单向换能器（SPUDT型）代替传统的IDT作为SAW膨胀机/压缩机，插入损耗大大降低。 SPUDT型反映了在常规IDT设计中丢失的SAW组件，使得更强的SAW被引向传输元件。 在接收机中，SPUDT型可以将更强的SAW引导到压缩机IDT。 基于SPUDT型技术的通信系统将是低成本，低功率，小而简单的替代已知的短距离通信方案，包括例如蓝牙TM解决方案。 预期在2.4GHz的频率下操作SAW系统。
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6.发明授权A wireless communication system using surface acoustic wave (SAW) second harmonic techniques 有权使用二次谐波表面声波技术的无线通信系统
公开(公告)号：EP1160975B1
公开(公告)日：2008-05-14
申请号：EP01113311.3
申请日：2001-05-31
IPC分类号： H03H9/64
CPC分类号： H03H9/6406 , G01S13/755 , H03H9/0028 , H03H9/0042
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7.发明公开
公开(公告)号：EP1901427A1
公开(公告)日：2008-03-19
申请号：EP07124123.6
申请日：2001-05-31
CPC分类号： H03H9/44 , G01S13/755 , H03H9/0274 , H03H9/14505
摘要： SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, conventional SAW expanders and compressors typically have insertion losses greater than 20 dB, which can have a profound effect on an RF link budget in a communication system. Insertion losses are drastically reduced by using a single phase unidirectional transducer (SPUDT-type) instead of a conventional IDT as a SAW expander/compressor. A SPUDT-type reflects SAW components which are lost in conventional IDT designs so that a stronger SAW is directed toward a transmission element. In a receiver, a SPUDT-type directs a stronger SAW toward a compressor IDT. A communication system based on SPUDT-type techniques would be low-cost, low-power, small and simple alternative to known short range communications schemes, including for example the Bluetooth TM solution. Operation of a SAW system at a frequency of 2.4 GHz is contemplated.
摘要翻译： SAW器件：例如叉指式变换器（IDT）已经在雷达应用和用作过滤器被广泛使用。 的IDT产生一个SAW当由单个电脉冲激励，并且可以被制造为体现为代码，该代码的代码为SAW输入到IDT一个的被动自相关，从而使其本身つweiterer应用如在通信设备中的信号发生器 ， 然而，传统的SAW膨胀器和压缩机通常具有插入损耗大于20分贝，这可能对在RF链路预算在通信系统中产生深远的影响。插入损耗是通过使用单相单向换能器（SPUDT型）显着降低，而不是 的常规IDT作为SAW扩展器/压缩器。 甲SPUDT类型反映其在常规设计IDT丢失做了更强的SAW朝向传动元件定向声表面波元件。 在接收机中，一个SPUDT型ausrichtet朝向压缩机IDT更强的SAW。 基于SPUDT型技术的通信系统将是低成本，低功耗，小和简单的替代已知的短程通信方案，包括例如蓝牙TM溶液。 在2.4GHz的频率的SAW系统的操作设想。
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8.发明公开Adaptive tuning device and method for a wireless communication device 有权自适应Abstimmungsvorrichtung und Verfahrenfürein drahtlosesKommunikationsgerät
公开(公告)号：EP1206034A3
公开(公告)日：2004-03-17
申请号：EP01117567.6
申请日：2001-07-20
CPC分类号： H03H9/0274 , H03H7/40 , H03H9/0042 , H03H9/14505 , H03H9/1455 , H03H9/642 , H03H11/30
摘要： An adaptive tuning method for a wireless communication device determines the impedance of a matching circuit relative to an impedance to be matched and adjusts the impedance of the matching circuit accordingly. A passive surface acoustic wave (SAW) device includes multiple terminated interdigital transducers (IDTs) which generate reflected SAWs when excited by incident SAWs, each reflected SAW having magnitude and phase characteristics dependent upon the particular IDT termination. According to the invention, the IDT terminations include the impedance matching circuit and the impedance to be matched. Input IDTs in the SAW device are excited with electrical signals, which are converted to generate the incident SAWs. The resultant reflected SAWs are converted by output IDTs into output electrical signal signals which can then be analyzed to determine magnitude and phase differences between the output electrical signal signals and generate an impedance matching circuit control signal based thereon.
摘要翻译： 用于无线通信设备的自适应调谐方法确定匹配电路相对于要匹配的阻抗的阻抗，并相应地调整匹配电路的阻抗。 无源表面声波（SAW）器件包括当由入射SAW激发时产生反射的SAW的多个端接的叉指式换能器（IDT），每个反射的SAW具有取决于特定的IDT终止的幅度和相位特性。 根据本发明，IDT终端包括阻抗匹配电路和要匹配的阻抗。 SAW器件中的输入IDT被电信号激励，电信号被转换以产生入射的SAW。 所得到的反射SAW通过输出IDT转换成输出电信号信号，然后可以对其进行分析，以确定输出电信号信号之间的幅度和相位差，并基于此产生阻抗匹配电路控制信号。
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9.发明公开
公开(公告)号：EP1206034A2
公开(公告)日：2002-05-15
申请号：EP01117567.6
申请日：2001-07-20
CPC分类号： H03H9/0274 , H03H7/40 , H03H9/0042 , H03H9/14505 , H03H9/1455 , H03H9/642 , H03H11/30
摘要： An adaptive tuning method for a wireless communication device determines the impedance of a matching circuit relative to an impedance to be matched and adjusts the impedance of the matching circuit accordingly. A passive surface acoustic wave (SAW) device includes multiple terminated interdigital transducers (IDTs) which generate reflected SAWs when excited by incident SAWs, each reflected SAW having magnitude and phase characteristics dependent upon the particular IDT termination. According to the invention, the IDT terminations include the impedance matching circuit and the impedance to be matched. Input IDTs in the SAW device are excited with electrical signals, which are converted to generate the incident SAWs. The resultant reflected SAWs are converted by output IDTs into output electrical signal signals which can then be analyzed to determine magnitude and phase differences between the output electrical signal signals and generate an impedance matching circuit control signal based thereon.
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10.发明公开
公开(公告)号：EP1160974A3
公开(公告)日：2002-02-20
申请号：EP01113310.5
申请日：2001-05-31
IPC分类号： H03H9/64
CPC分类号： H03H9/44 , G01S13/755 , H03H9/0274 , H03H9/14505
摘要： SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, conventional SAW expanders and compressors typically have insertion losses greater than 20 dB, which can have a profound effect on an RF link budget in a communication system. Insertion losses are drastically reduced by using a single phase unidirectional transducer (SPUDT-type) instead of a conventional IDT as a SAW expander/compressor. A SPUDT-type reflects SAW components which are lost in conventional IDT designs so that a stronger SAW is directed toward a transmission element. In a receiver, a SPUDT-type directs a stronger SAW toward a compressor IDT. A communication system based on SPUDT-type techniques would be low-cost, low-power, small and simple alternative to known short range communications schemes, including for example the Bluetooth™ solution. Operation of a SAW system at a frequency of 2.4 GHz is contemplated.
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