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1. 发明授权

US09990837B1 Intrinsic safety isolation with capacitive coupling 有权
公开(公告)号：US09990837B1
公开(公告)日：2018-06-05
申请号：US15446459
申请日：2017-03-01
申请人： Rosemount Inc.
发明人： Andrew L. Stone , John A Kielb
IPC分类号： G08B25/10 , H03C3/42
CPC分类号： H03C3/42
摘要： A communication apparatus is provided. The apparatus includes a printed circuit board having a thickness that complies with an intrinsic safety physical separation specification. A first pair of capacitive plates are disposed on opposite sides of the printed circuit board and are arranged to form a first capacitor having an insulating layer of the printed circuit board forming a dielectric material for the first capacitor. A second pair of capacitive plates are disposed on opposite sides of the printed circuit board and are arranged to form a second capacitor having the insulating layer of the printed circuit board forming a dielectric material for the second capacitor. A modulator is coupled to the first and second capacitors and is configured to receive an input signal having an input signal frequency and to provide a modulated signal having a frequency that is higher than the input signal. A demodulator is coupled to the first and second capacitors and configured to detect the modulated signal and provide a demodulated signal having the input signal frequency.

2. 发明授权

US08872595B2 Binary bi-phase shift modulator 有权
标题翻译：二进制双相移相调制器
公开(公告)号：US08872595B2
公开(公告)日：2014-10-28
申请号：US13609623
申请日：2012-09-11
申请人： Roger D. Kaul , Jeffrey S. Pulskamp , Ronald G. Polcawich , Sarah Bedair
发明人： Roger D. Kaul , Jeffrey S. Pulskamp , Ronald G. Polcawich , Sarah Bedair
IPC分类号： H03C3/00
CPC分类号： H03C3/00 , H03C3/42
摘要： A binary bi-phase shift modulator having an input piezoelectric transducer and an output piezoelectric transducer connected in series between a radio frequency input and a radio frequency output. A fixed DC pole voltage having a first polarity is connected to one of the transducers. A DC switched pole voltage is connected to the other transducer which switches between the pole voltage of the first polarity and a pole voltage of the opposite polarity in accordance with a binary data signal. The polarity of the radio frequency input relative to the radio frequency output varies as a function of the polarity of the DC switched pole voltage.
摘要翻译：一种二进制双相位调制器，具有输入压电换能器和串联连接在射频输入与射频输出之间的输出压电换能器。具有第一极性的固定DC极电压连接到换能器中的一个。直流开关极电压连接到根据二进制数据信号在第一极性的极点电压和相反极性的极点电压之间切换的另一个换能器。相对于射频输出的射频输入的极性根据直流开关极电压的极性而变化。

3. 发明授权

US3949324A Surface wave device angle modulator 失效
标题翻译：表面波器件角度调制器
公开(公告)号：US3949324A
公开(公告)日：1976-04-06
申请号：US522554
申请日：1974-11-11
申请人： Benjamin L. Lowe , Jerry D. Holmes
发明人： Benjamin L. Lowe , Jerry D. Holmes
IPC分类号： H03C3/40 , H03C3/42 , H03C3/28
CPC分类号： H03C3/42 , H03C3/40
摘要： A system for generating angular modulation comprising a balanced modulator and an adding circuit to which a surface wave device quadrature oscillator applies two signals at the carrier frequency differing 90.degree. in phase, such phase difference being accurately maintained independent of aging and variations in operating temperatures. More particularly, an information signal is applied to one input of the balanced modulator, the output of which is applied to the adding circuit. The surface wave device oscillator completes the system by applying an in-phase carrier frequency to a second input of the balanced modulator and a carrier frequency shifted 90.degree. in phase to a second input of the adding circuit. Angular modulation is thus produced at the output of the adding circuit.
摘要翻译：一种用于产生角度调制的系统，包括平衡调制器和加法电路，表面波装置正交振荡器以相位不同于90°的载波频率施加两个信号，这种相位差被精确地保持，与时效和工作温度的变化无关。更具体地，信息信号被应用于平衡调制器的一个输入，其输出被施加到加法电路。表面波器件振荡器通过将相位载波频率施加到平衡调制器的第二输入端并将相位偏移90°的载波频率施加到加法电路的第二输入端来完成该系统。因此，在加法电路的输出处产生角度调制。

4. 发明授权

US4286235A VFO having plural feedback loops 失效
标题翻译： VFO具有多个反馈回路
公开(公告)号：US4286235A
公开(公告)日：1981-08-25
申请号：US51826
申请日：1979-06-25
申请人： James A. Wilber , Todd J. Christopher
发明人： James A. Wilber , Todd J. Christopher
IPC分类号： H03B5/32 , H03B5/02 , H03B5/36 , H03C3/42
CPC分类号： H03B5/366 , H03B5/02 , H03C3/42
摘要： An oscillator including a resonator having a primary feedback loop for causing oscillations to occur at a desired frequency and a secondary feedback loop including a multiplier for causing variations of said frequency in response to an input signal manifestation. Spectral purity is enhanced and potential overtone oscillations are suppressed by a cascade connection of lag networks in the primary loop which exhibit a low-pass transfer characteristic and provide at least .pi. radians of phase shift, one of the networks being shared in common with the secondary loop for supplying a quadrature signal to the multiplier.
摘要翻译：一种包括谐振器的振荡器，该谐振器具有用于使所要求的频率发生振荡的主反馈回路，以及包括用于响应于输入信号表现引起所述频率变化的乘法器的次级反馈回路。频谱纯度得到增强，并且潜在的泛音振荡通过主回路中的滞后网络的级联连接被抑制，其呈现低通传输特性并提供至少π弧度的相移，其中一个网络与次级共享用于向乘法器提供正交信号。

5. 发明授权

US3979697A Frequency modulated saw oscillator 失效
标题翻译：调频锯振荡器
公开(公告)号：US3979697A
公开(公告)日：1976-09-07
申请号：US628082
申请日：1975-11-03
申请人： Thomas H. Donahue
发明人： Thomas H. Donahue
IPC分类号： H03B5/32 , H03C3/42
CPC分类号： H03C3/42 , H03B5/326
摘要： An oscillator in which the "tank circuit" or feedback element is a surface acoustic wave (SAW) bandpass filter (delay line). A modulating voltage is applied from end-to-end of the piezoelectric substrate material to provide an incremental change of physical length of the substrate as a function of the modulating voltage. Two sets of interleaved fingers along a surface face of the substrate provide an interdigital arrangement for launching (electrical to acoustic transition) and receiving (acoustic to electrical transition) the surface acoustic wave.
摘要翻译： “振荡电路”或反馈元件是表面声波（SAW）带通滤波器（延迟线）的振荡器。调制电压从压电衬底材料的端到端施加，以提供作为调制电压的函数的衬底的物理长度的增量变化。沿着基板的表面的两组交错指状物提供用于发射（电 - 声转换）和接收（声 - 电转换）表面声波的叉指布置。

6. 发明授权

US2454933A Frequency modulation 失效
标题翻译：调频
公开(公告)号：US2454933A
公开(公告)日：1948-11-30
申请号：US47614543
申请日：1943-02-17
申请人： RCA CORP
发明人： LUCK DAVID G C
IPC分类号： H03C3/42
CPC分类号： H03C3/42

7. 发明申请

US20140070902A1 BINARY BI-PHASE SHIFT MODULATOR 有权
标题翻译：二进制双相调制器
公开(公告)号：US20140070902A1
公开(公告)日：2014-03-13
申请号：US13609623
申请日：2012-09-11
申请人： Roger D. Kaul , Jeffrey S. Pulskamp , Ronald G. Polcawich , Sarah Bedair
发明人： Roger D. Kaul , Jeffrey S. Pulskamp , Ronald G. Polcawich , Sarah Bedair
IPC分类号： H03C3/42
CPC分类号： H03C3/00 , H03C3/42
摘要： A binary bi-phase shift modulator having an input piezoelectric transducer and an output piezoelectric transducer connected in series between a radio frequency input and a radio frequency output. A fixed DC pole voltage having a first polarity is connected to one of the transducers. A DC switched pole voltage is connected to the other transducer which switches between the pole voltage of the first polarity arid a pole voltage of the opposite polarity m accordance with a dinar data signal The polarity of the radio frequency input relative to the radio frequency output varies as a function of the polarity of the DC switched pole voltage.
摘要翻译：一种二进制双相位调制器，具有输入压电换能器和串联连接在射频输入与射频输出之间的输出压电换能器。具有第一极性的固定DC极电压连接到换能器中的一个。直流开关极电压连接到另一个换能器，该换能器根据第纳尔数据信号在第一极性的极点电压和相反极性的极点电压之间切换。相对于射频输出的射频输入的极性变化作为DC开关极电压的极性的函数。

8. 发明授权

US07612627B2 Integrated binary phase shift keying with silicon MEMS resonators 有权
标题翻译：具有硅MEMS谐振器的集成二进制相移键控
公开(公告)号：US07612627B2
公开(公告)日：2009-11-03
申请号：US11863534
申请日：2007-09-28
申请人： Florian Schön , Wolfgang Raberg , Bernhard Winkler
发明人： Florian Schön , Wolfgang Raberg , Bernhard Winkler
IPC分类号： H04L27/20
CPC分类号： H03C3/42 , H03J2200/19
摘要： A modulator includes a micro-electromechanical resonator device configured to receive an input signal and generate two output signals in response thereto, wherein the two signals having a predetermined phase relationship therebetween. The modulator further includes a switching system configured to selectively pass one of the two signals to an output of the modulator in an alternating fashion in response to phase modulation data.
摘要翻译：调制器包括被配置为接收输入信号并响应于此产生两个输出信号的微机电谐振器装置，其中两个信号之间具有预定的相位关系。该调制器还包括一个交换系统，配置成响应于相位调制数据以交替的方式选择性地将两个信号之一传送到调制器的输出端。

9. 发明授权

US3942135A Concatenated surface wave delay line correlator 失效
标题翻译：连续表面波延迟线相关器
公开(公告)号：US3942135A
公开(公告)日：1976-03-02
申请号：US478626
申请日：1974-06-12
申请人： Clinton H. Moor , Carl F. Stolwyk , John J. Vencill
发明人： Clinton H. Moor , Carl F. Stolwyk , John J. Vencill
IPC分类号： G06G7/195 , H03C1/46 , H03C3/42 , H03H9/44 , H03C3/28 , H03H9/14
CPC分类号： G06G7/195 , H03C1/46 , H03C3/42 , H03H9/44
摘要： A concatenated surface wave device having delay line capabilities for use in correlating electric signals of various types and forms including analog signals, binary signals, and binary modulated signals, said device including means forming a specially constructed conductive surface pattern over which the signals to be correlated are propagated, said surface pattern including input transducer means at a location where input signals to be correlated are introduced for propagation over the surface, a plurality of tap locations on the surface at spaced locations extending away from the input transducer means, and means for sampling a propagated signal at selected surface locations including at selected ones of said tap locations to determine the locations of places where the signals to be correlated are in agreement and are and are in disagreement. The subject correlator also includes means by which signal components can be introduced at selected tap locations along the device.
摘要翻译：一种具有延迟线能力的级联表面波装置，用于将包括模拟信号，二进制信号和二进制调制信号的各种类型和形式的电信号相关联，所述装置包括形成特殊构造的导电表面图案的装置，在该图形上将要相关的信号所述表面图案包括输入换能器装置，该输入换能器装置位于要被相关输入信号被引入以在所述表面上传播的位置，所述表面上的离开所述输入换能器装置的间隔位置处的多个抽头位置，以及用于采样的装置在选定的表面位置处包括在选定的所述抽头位置处的传播信号，以确定要相关信号的位置的位置是一致的并且是不同意的。主题相关器还包括可以沿着装置在选定的抽头位置引入信号分量的装置。

10. 发明授权

US3931597A Apparatus and method for phase-encoded surface wave devices 失效
标题翻译：相位编码表面波装置的装置和方法
公开(公告)号：US3931597A
公开(公告)日：1976-01-06
申请号：US439482
申请日：1974-02-04
申请人： Frederick Y. Cho , Bill J. Hunsinger
发明人： Frederick Y. Cho , Bill J. Hunsinger
IPC分类号： H03C3/42 , H03H9/145 , H03H9/02 , H01L41/04 , H03H9/26 , H03H9/30
CPC分类号： H03H9/6406 , G06K19/0675 , H03C3/42 , H03H9/14547 , H03H9/14564 , H03H9/1452 , H03H9/14535
摘要： Apparatus and method for phase-encoding electro-acoustic electro-acoustic elements, elements of an acoustic surface wave device to provide preselected transducer characteristics. By altering the position of a transducer element or portions of a transducer element, the phase of the acoustic wave propagated from, or the phase of the electrical signal received by the transducer element can be varied by an amount determined by the velocity of propagation of the acoustic wave.By altering the location of the electro-elements, or portions thereof, from a position determined for example by amplitude-encoding techniques, a resultant signal produced by a plurality of electro-acoustic elements, element portions, or combination of elements and element portions can provide the preselected transducer characteristics. In addition, the elements or element portions can be located such that the overlap amplitude between adjacent electro-acoustic elements is substantially a constant, providing increased directionality for acoustic waves orignating at the transducer.According to one embodiment, each electro-acoustic transducer can be phase-encoded permitting both an input and an output transducer to be phase-encoded with preselected characteristics.According to a second embodiment, the elements or portions thereof of a first transducer are displaced relative to elements or portions thereof of a second transducer to provide appropriate device phase-encoding.
摘要翻译：用于相位编码电声电声元件的装置和方法，提供预选换能器特性的声表面波装置的元件。通过改变换能器元件或换能器元件的部分的位置，由换能器元件接收的电信号传播的声波相位或相位可以改变由传播元件的传播速度确定的量声波。

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