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21. 发明授权

US5822687A Method and apparatus for automatic tuning calibration of electrically tuned filters 失效
标题翻译：电调谐滤波器自动调谐校准的方法和装置
公开(公告)号：US5822687A
公开(公告)日：1998-10-13
申请号：US110233
申请日：1993-08-23
申请人： Robert Henry Bickley , Michael Newton Pickett
发明人： Robert Henry Bickley , Michael Newton Pickett
IPC分类号： H03J5/00 , H03J1/00 , H03J3/32 , H03J5/02 , H03J7/18 , H04B1/26 , H04B17/00
CPC分类号： H03J3/32 , H03J5/0254 , H03J1/0033 , H03J2200/16
摘要： A method and apparatus for automatic tuning calibration of electronically tuned filters which comprises a programmable frequency generator for producing a calibration frequency signal, a filter for filtering the calibration frequency signal, a detector for producing a detector voltage, a processor for programming the frequency generator to specific test frequencies and for producing a stepped filter tuning voltage and storing the detector voltage in response to the stepped filter tuning voltage, and a converter for digital-to-analog conversion of the stepped filter tuning voltage. Calibration frequency signal versus tuning voltage responses are stored for a number of calibration iterations within the usable range of the filter and the resulting table can be used to determine the correct tuning voltage for the filter when operating at any frequency within the usable filter range.
摘要翻译：一种用于自动调谐电子调谐滤波器校准的方法和装置，包括用于产生校准频率信号的可编程频率发生器，用于滤波校准频率信号的滤波器，用于产生检测器电压的检测器，用于将频率发生器编程的处理器特定的测试频率和用于产生阶梯式滤波器调谐电压并且响应于阶梯滤波器调谐电压存储检测器电压，以及用于阶梯滤波器调谐电压的数模转换的转换器。校准频率信号与调谐电压响应存储在滤波器的可用范围内的多个校准迭代，并且当在可用滤波器范围内的任何频率下操作时，所得到的表可用于确定滤波器的正确调谐电压。

22. 发明授权

US4864639A Self-test device and method having an amplifier converted into an oscillator 失效
标题翻译：具有转换成振荡器的放大器的自检装置和方法
公开(公告)号：US4864639A
公开(公告)日：1989-09-05
申请号：US101488
申请日：1987-09-28
申请人： Mark A. Dapore , Daniel A. Titus
发明人： Mark A. Dapore , Daniel A. Titus
IPC分类号： H03J1/00 , H03J3/32 , H03J7/02 , H03J7/28 , H04B1/16
CPC分类号： H03J7/02 , H03J3/32 , H03J7/28 , H04B1/16 , H03J1/0008
摘要： An FM receiver is self tested by connecting a positive feedback network in circuit with a wideband, front end r.f. amplifier of the receiver, so that the amplifier is converted into an oscillator. R.f. and i.f. characteristics of the receiver are determined by comparing the amplitude of an i.f. signal with a predetermined reference value while the amplifier is converted to an oscillator. Noise characteristics of the receiver are determined by comparing the amplitude of an audio frequency signal of the receiver with a predetermined value while the amplifier is converted to an oscillator and the amplifier derives an unmodulated r.f. output. Baseband characteristics of the receiver are determined by varying a reactance in the positive feedback path to impose FM on r.f. oscillations derived by the amplifier and by comparing the amplitude of the output of the audio frequency amplifier with a predetermined value. By varying the value of the reactance in the feedback loop, the oscillating frequency is swept to determine the center operating frequency and i.f. bandwidth of the r.f., amplifier.
摘要翻译： FM接收机通过将电路中的正反馈网络与宽带前端r.f.连接进行自检。放大器，使放大器转换为振荡器。 R.f. 而如果。通过比较i.f的振幅来确定接收机的特性。当放大器转换为振荡器时，具有预定参考值的信号。通过将放大器转换为振荡器并且放大器导出未调制的r.f，将接收机的音频信号的幅度与预定值进行比较来确定接收机的噪声特性。输出。接收机的基带特性通过改变正反馈路径中的电抗来对FM施加r.f.来确定。并且通过将音频放大器的输出的幅度与预定值进行比较来产生振荡。通过改变反馈回路中的电抗值，扫描振荡频率以确定中心工作频率和i.f. r.f.，放大器的带宽。

23. 发明授权

US4794650A Electronic tuning receiver 失效
标题翻译：电子调谐接收机
公开(公告)号：US4794650A
公开(公告)日：1988-12-27
申请号：US071299
申请日：1987-07-09
申请人： Hajime Yokoyama
发明人： Hajime Yokoyama
IPC分类号： H03J3/20 , H03J3/32 , H04B1/26
CPC分类号： H03J3/32
摘要： A receiver equipped with an electronic tuning circuit which uses voltage-variable reactance elements such as variable-capacitance diodes or the like in the radio-frequency tuning circuit and oscillation tuning circuit thereof. The oscillation tuning circuit includes a novel padding capacitor constituted by a composite circuit of a variable-capacitance diode and fixed capacitors connected at the position where a conventional padding capacitor is connected. With such an arrangement, it is possible to make tracking error negligibly small over a frequency band ranging from a low receiving frequency to a high receiving frequency, by applying a tuning voltage to the composite padding capacitor.
摘要翻译：具有电子调谐电路的接收机，该电子调谐电路在射频调谐电路及其振荡调谐电路中使用诸如变容二极管等的电压可变电抗元件。振荡调谐电路包括由连接在传统的填充电容器的位置处连接的可变电容二极管和固定电容器的复合电路构成的新型填充电容器。通过这样的配置，通过对复合填充电容器施加调谐电压，可以在从低接收频率到高接收频率的频带范围内使跟踪误差小得可以小。

24. 发明授权

US2759158A U. h. f. tuner 失效
标题翻译： U. F。调谐器
公开(公告)号：US2759158A
公开(公告)日：1956-08-14
申请号：US32619752
申请日：1952-12-16
申请人： MALLORY & CO INC P R
发明人： PUERNER GEORGE O , TWINAM JOSEPH R
IPC分类号： H03J3/32
CPC分类号： H03J3/32

25. 发明公开

US20240302462A1 BIMODAL EPR RESONATOR WITH AUTOMATIC ELECTRICALLY CONTROLLED INTER-MODE ISOLATION 审中-公开
公开(公告)号：US20240302462A1
公开(公告)日：2024-09-12
申请号：US18573673
申请日：2022-06-24
申请人： West Virginia University Board of Governors on Behalf of West Virginia University
发明人： Mark Tseytlin , Oxana Tseytlin , Ryan O’Connell
IPC分类号： G01R33/34 , G01R33/60 , H03J3/32
CPC分类号： G01R33/34046 , G01R33/34007 , G01R33/60 , H03J3/32
摘要： Various examples are provided related to bimodal electron paramagnetic resonance (EPR). In one example, a bimodal resonator includes a detection coil; first and second excitation coils, where the excitation coils are non-parallel separated by a fixed angle; and excitation controllers coupled to the first and second excitation coils. The excitation controllers can adjust radio frequency (RF) fields generated by the first and second excitation coils to produce a resonator field substantially parallel with the detection coil. In another example, a method including generating a first RF field by exciting the first excitation coil; generating a second RF field by exciting the second excitation coil; and producing a resonator field substantially parallel with a detection coil of the bimodal resonator by adjusting the RE field of the first excitation coil, the RF filed of the second excitation coil, or both.

26. 发明授权

US07688153B2 Automatically tuned tail filter 失效
标题翻译：自动调节尾部过滤器
公开(公告)号：US07688153B2
公开(公告)日：2010-03-30
申请号：US12088972
申请日：2005-10-05
申请人： Harald Jacobsson , Lars Aspemyr
发明人： Harald Jacobsson , Lars Aspemyr
IPC分类号： H03B5/12 , H03L5/00
CPC分类号： H03J3/32 , H03B5/1215 , H03B5/1228 , H03B5/124 , H03B5/1278 , H03B5/1284
摘要： The present invention relates to an oscillating circuit arrangement having a resonating arrangement with a first resonance frequency (coo) comprising a voltage controlled oscillator arrangement. It further comprises a tunable filter arrangement connected to the source node of said voltage controlled oscillator (VCO) arrangement. Said filter arrangement particularly comprises an equivalent current source resonating at a second resonance frequency cθf, the second resonance frequency being a multiple n, n=1 or 2 of said first resonance frequency (α>o), n being equal to the minimum number of switch transistors required for oscillation of said VCO arrangement. The filter arrangement particularly comprises an inductor connected in parallel with a capacitor, said capacitor being adapted to be tunable such that the phase noise of the resonating arrangement can be minimized through tuning of the filter arrangement.
摘要翻译：本发明涉及一种具有谐振装置的振荡电路装置，其具有包括压控振荡器装置的第一谐振频率（coo）。它还包括连接到所述压控振荡器（VCO）装置的源节点的可调滤波器装置。所述滤波器装置特别地包括在第二谐振频率c 2处共振的等效电流源; f，第二谐振频率是所述第一谐振频率（α> o）的倍数n，n = 1或2，n等于最小值所述VCO装置的振荡所需的开关晶体管的数量。滤波器装置特别地包括与电容器并联连接的电感器，所述电容器适于可调谐，使得谐振装置的相位噪声可以通过滤波器装置的调谐被最小化。

27. 发明授权

US07363015B2 Wide-frequency-range television tuner 失效
标题翻译：宽频电视调谐器
公开(公告)号：US07363015B2
公开(公告)日：2008-04-22
申请号：US11157579
申请日：2005-06-21
申请人： Masaki Yamamoto
发明人： Masaki Yamamoto
IPC分类号： H04B7/00
CPC分类号： H03J3/185 , H03J3/32 , H03J2200/36 , H03J2200/37 , H03J2200/38
摘要： A television tuner includes a tuning circuit having two first varactor diodes for changing a tuning frequency, a mixer for converting a television signal to an intermediate frequency signal, an oscillator having a second varactor diode, and a PLL circuit for outputting a tuning voltage for tuning the television signal. The tuning voltage is applied to cathodes of the first varactor diodes and the second varactor diode, and voltages of anodes of the first varactor diodes and the second varactor diode are higher at a time of receiving the television signal whose frequency is lower than or equal to a predetermined frequency than at a time of receiving a television signal whose frequency is higher than the predetermined frequency.
摘要翻译：电视调谐器包括具有两个用于改变调谐频率的第一变容二极管的调谐电路，用于将电视信号转换成中频信号的混频器，具有第二变容二极管的振荡器和用于输出用于调谐的调谐电压的PLL电路电视信号。调谐电压施加到第一变容二极管和第二变容二极管的阴极，并且在接收频率低于或等于的电视信号时，第一变容二极管和第二变容二极管的阳极的电压较高比接收频率高于预定频率的电视信号时的预定频率。

28. 发明授权

US06842198B2 TV signal receiving tuner capable of outputting oscillation signal having wide frequency band by means of single local oscillator 失效
标题翻译： TV信号接收调谐器能够通过单个本地振荡器输出具有宽频带的振荡信号
公开(公告)号：US06842198B2
公开(公告)日：2005-01-11
申请号：US09972162
申请日：2001-10-05
申请人： Takeo Suzuki , Shigeru Osada
发明人： Takeo Suzuki , Shigeru Osada
IPC分类号： H03D7/16 , H03J1/00 , H03J3/32 , H03J5/24 , H03L7/099 , H04B1/26 , H04N5/44 , H04N5/50
CPC分类号： H03J5/244 , H03J1/0041 , H03J3/32 , H03J5/24 , H03L7/0805 , H03L7/099
摘要： A TV signal receiving tuner which is small in size and inexpensive due to a reduced number of local oscillators. In the TV signal receiving tuner, a local oscillation signal output from a local oscillator is directly applied to a first mixer through a first programmable divider to receive a UHF TV signal, the local oscillation signal output from the local oscillator is applied to the first mixer after its frequency is divided to 1/3 by the first programmable divider to receive a VHF high-band TV signal, and the local oscillation signal output from the local oscillator is applied to the first mixer after its frequency is divided to 1/5 by the first programmable divider to receive a VHF low-band TV signal.
摘要翻译：一种电视信号接收调谐器，其尺寸小并且由于本地振荡器的数量减少而便宜。在TV信号接收调谐器中，从本地振荡器输出的本地振荡信号通过第一可编程分频器直接施加到第一混频器，以接收UHF TV信号，将从本地振荡器输出的本地振荡信号施加到第一混频器在其频率被第一可编程分频器分频为1/3以接收VHF高频电视信号之后，从本地振荡器输出的本地振荡信号在其频率被分频为1/5之后被施加到第一混频器第一个可编程分频器接收VHF低频电视信号。

29. 发明授权

US06438361B1 Apparatus and method for automatic selection of broadband frequency channel using double frequency conversion 有权
标题翻译：使用双频转换自动选择宽带频道的装置和方法
公开(公告)号：US06438361B1
公开(公告)日：2002-08-20
申请号：US09474090
申请日：1999-12-29
申请人： Young Jun Chong , Jae Young Kim , Sung Choon Kang , Jae Ick Choi , Jae Hong Park
发明人： Young Jun Chong , Jae Young Kim , Sung Choon Kang , Jae Ick Choi , Jae Hong Park
IPC分类号： H04Q732
CPC分类号： H03J1/005 , H03D7/163 , H03J1/0075 , H03J3/32 , H03J5/244 , H04B1/28
摘要： An apparatus, method and readable medium capable of automatically selecting a channel of a broadband frequency and calibrating a frequency change using approximated frequency mapping function are disclosed. The apparatus comprises a frequency band dividing part; a frequency converting part; a first controlling part; and a second controlling part. The second controlling part selects a coefficient of an approximated frequency mapping function for a channel corresponding to a channel conversion selection signal from outside from previously stored coefficients of approximated frequency mapping function for the divided frequency.
摘要翻译：公开了一种能够自动选择宽带频道的信道并使用近似频率映射函数来校准频率变化的装置，方法和可读介质。该装置包括频带划分部分; 频率变换部; 第一控制部分; 和第二控制部分。第二控制部分从先前存储的用于分频的近似频率映射函数的系数中选择与来自外部的信道转换选择信号相对应的信道的近似频率映射函数的系数。

30. 发明授权

US06188970B1 Method of calibrating a multistage selective amplifier 有权
标题翻译：校准多级选择放大器的方法
公开(公告)号：US06188970B1
公开(公告)日：2001-02-13
申请号：US09156366
申请日：1998-09-17
申请人： Karl Anton Becker , Stefan Brinkhaus , Armin Ganz , Bernd Memmler , Hans-Eberhardt Kroebel
发明人： Karl Anton Becker , Stefan Brinkhaus , Armin Ganz , Bernd Memmler , Hans-Eberhardt Kroebel
IPC分类号： G01R3500
CPC分类号： H03J1/0033 , H03J3/28 , H03J3/32
摘要： In a method for calibrating or aligning a multistage selective amplifier including an oscillator circuit and at least one tuning circuit, the tuning voltages respectively necessary for aligning the respective tuning circuits to the required receiving frequency are calculated directly from a mathematical relationship between the respective tuning voltage and the oscillator voltage. In order to achieve this, a characteristic multiplicative coefficient and a characteristic additive factor for each tuning circuit are stored in a memory upon manufacturing or switching on the device. In order to select a desired receiving frequency, the respective stored values as well as an oscillator voltage are provided to an amplification circuit, which correspondingly amplifies the oscillator voltage by the multiplicative coefficient and the additive factor and then provides the resulting output value as a tuning voltage to the respective tuning circuit. Thus, all necessary tuning voltages can be determined from the two respective stored values per tuning circuit, as necessary for selecting any desired receiving frequency.
摘要翻译：在用于校准或对准包括振荡器电路和至少一个调谐电路的多级选择放大器的方法中，将各个调谐电路对准所需接收频率所需的调谐电压直接由各个调谐电压之间的数学关系计算和振荡器电压。为了实现这一点，在制造或接通设备时，每个调谐电路的特征乘法系数和特征加法因子被存储在存储器中。为了选择期望的接收频率，将相应的存储值以及振荡器电压提供给放大电路，放大电路相应地通过乘法系数和相加系数放大振荡器电压，然后将所得到的输出值提供为调谐电压到相应的调谐电路。因此，可以根据每个调谐电路的两个相应的存储值来确定所有必要的调谐电压，这是为了选择任何所需的接收频率所必需的。

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