专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US4704739A Receiving circuit for converting signals comprising at least two ferromagnetic resonators 失效
标题翻译：用于转换包括至少两个铁磁谐振器的信号的接收电路
公开(公告)号：US4704739A
公开(公告)日：1987-11-03
申请号：US740899
申请日：1985-06-03
申请人： Yoshikazu Murakami , Seigo Ito , Toshiro Yamada
发明人： Yoshikazu Murakami , Seigo Ito , Toshiro Yamada
IPC分类号： H03J3/04 , H01P1/215 , H01P1/217 , H01P1/218 , H01P7/00 , H03B5/18 , H03J3/16 , H04B1/26
CPC分类号： H01P1/215 , H03J3/16
摘要： A signal converter comprises a filter formed of a first ferromagnetic resonator which supplied with an input signal that is to be converted and produces a filtered signal having a first frequency, a local oscillator formed of an active element and a second ferromagnetic resonator connected to the active element, produces an oscillating signal having a second frequency, a mixer receives and mixes the filtered signal and oscillating signal and produces a converted signal, the first ferromagnetic resonator is formed of a first ferrimagnetic crystal, a microstrip line magnetically coupled to the ferrimagnetic crystal and a first D.C. bias magnetic field means which applies a first D.C. bias magnetic field to the first ferrimagnetic crystal, the second ferromagnetic resonator is formed of a second ferrimagnetic crystal, a second microstrip line is magnetically coupled to the second ferrimagnetic crystal, and a second D.C. bias magnetic field means which applies a second D.C. bias magnetic field to the second ferrimagnetic crystal. The first and second ferrimagnetic crystals are composed of ferrimagnetic thin films such as YIG film formed by a thin film forming technique, such as liquid phase epitaxial growth.
摘要翻译：信号转换器包括由第一铁磁谐振器形成的滤波器，该第一铁磁谐振器提供有待转换的输入信号并产生具有第一频率的滤波信号，由有源元件形成的本地振荡器和连接到有源元件的第二铁磁谐振器产生具有第二频率的振荡信号，混频器接收并混合经滤波的信号和振荡信号并产生转换的信号，第一铁磁谐振器由第一亚铁磁晶体，磁耦合到亚铁磁晶体的微带线，以及第一直流偏置磁场装置，其向第一亚铁磁晶体施加第一直流偏置磁场，第二铁磁谐振器由第二亚铁磁晶体形成，第二微带线被磁耦合到第二亚铁磁晶体，第二直流偏置磁场施加第二DC偏置磁场f的偏置磁场装置连接到第二个铁磁晶体。第一和第二亚铁磁晶体由诸如液相外延生长的薄膜形成技术形成的诸如YIG膜的亚铁磁性薄膜组成。

22. 发明授权

US4153849A Circuit for normalizing devices having current-controlled frequency response to predetermined I-F characteristic 失效
标题翻译：用于对具有预定I-F特性的电流受控频率响应的装置进行归一化的电路
公开(公告)号：US4153849A
公开(公告)日：1979-05-08
申请号：US820689
申请日：1977-08-01
申请人： Stanley R. Hall , Armando Benavides
发明人： Stanley R. Hall , Armando Benavides
IPC分类号： H03J3/16 , H03K1/02
CPC分类号： H03J3/16
摘要： Circuits are disclosed for normalizing a device which has a current-controlled frequency response, such as a YIG or a TWM device, to a predetermined current-frequency (I-F) characteristic in order that a device equipped with such a circuit can be preadjusted for substitution in a system for a like device without realigning the system. The normalizing circuit is in parallel with the device, and is comprised of a transistor and a compensating current-sensing resistor in series with the transistor. A shunt compensating current, I.sub.C, through the transistor is set by a voltage on a potentiometer to offset the I-F characteristic of the composite device and circuit from that of the device to a predetermined level and also by a feedback control circuit connected to the compensating current-sensing resistor. The slope of the offset characteristic is then adjusted to a predetermined value by adjusting the gain of a feedback control circuit between the transistor and a resistor which senses a voltage, V.sub.S, proportional to the current, I.sub.T, which is the sum of the drive current, I.sub.Y, through the device and the shunted compensating current, I.sub.C, through the transistor.
摘要翻译：公开了用于将具有电流控制的频率响应的装置（例如YIG或TWM装置）归一化为预定的电流 - 频率（IF）特性的电路，以便配备有这种电路的装置可以被预调节以进行替换在类似设备的系统中，不重新对准系统。归一化电路与器件并联，并且由与晶体管串联的晶体管和补偿电流检测电阻组成。通过电位器上的电压来设置通过晶体管的并联补偿电流IC，以将复合器件和电路的IF特性从器件的IF特性偏移到预定电平，并且还通过连接到补偿电流的反馈控制电路感应电阻。然后通过调整晶体管和电阻之间的反馈控制电路的增益来调整偏移特性的斜率，该电阻感测与电流IT成正比的电压，IT是驱动电流之和，IY，通过器件和分流补偿电流IC，通过晶体管。

23. 发明授权

US3973204A YIG tuned mixer 失效
标题翻译： YIG调音台
公开(公告)号：US3973204A
公开(公告)日：1976-08-03
申请号：US552912
申请日：1975-02-25
申请人： Richard C. Keiter
发明人： Richard C. Keiter
IPC分类号： H03J3/16 , H01P7/00 , H03D7/00 , H03D9/06 , H03J1/00 , H04B1/26
CPC分类号： H04B1/0003 , H01P7/00 , H03D7/00 , H03D9/0608 , H03J1/00 , H04B1/26
摘要： A microwave mixer is integrated with an yttrium-iron-garnet (YIG) tuning element to provide a YIG tuned heterodyne conveter or mixer. An input signal is provided to the YIG tuning element by an input coupling loop and local oscillator power is provided to an output coupling loop. A mixing diode is connected in series with the output coupling loop close to the YIG tuning element, and the mixing products appear on the output coupling loop. The output coupling loop is connected to a circuit which separates the local oscillator input signal from the intermediate frequency output signal.
摘要翻译：微波混合器与钇 - 铁 - 石榴石（YIG）调谐元件集成，以提供YIG调谐外差调速器或混频器。通过输入耦合回路将输入信号提供给YIG调谐元件，并将本地振荡器功率提供给输出耦合回路。混合二极管与靠近YIG调谐元件的输出耦合回路串联连接，混合产物出现在输出耦合回路上。输出耦合回路连接到将本地振荡器输入信号与中频输出信号分离的电路。

24. 发明授权

US3544903A Variable inductor band changing for vhf-uhf tuner 失效
标题翻译： VHF-UHF调谐器的变化电感带更换
公开(公告)号：US3544903A
公开(公告)日：1970-12-01
申请号：US3544903D
申请日：1967-08-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAMOTO YOISHI
IPC分类号： H03J3/16 , H03J3/18 , H03J5/02 , H03J7/24
CPC分类号： H03J5/0218 , H03J3/16 , H03J3/185 , H03J7/24

25. 发明授权

US3373346A Linear reactive voltage control networks 失效
标题翻译：线性无功电压控制网络
公开(公告)号：US3373346A
公开(公告)日：1968-03-12
申请号：US43525265
申请日：1965-02-25
申请人： SYLVANIA ELECTRIC PROD
发明人： JOHANNESSEN PAUL R
IPC分类号： H03F9/00 , H03J3/16 , H03J7/04
CPC分类号： H03J7/04 , H03F9/00 , H03J3/16

26. 发明授权

US2941167A Stabilized electronic tuning means 失效
标题翻译：稳定的电子调谐装置
公开(公告)号：US2941167A
公开(公告)日：1960-06-14
申请号：US59791456
申请日：1956-07-16
申请人： COLLINS RADIO CO
发明人： ELLIOTT WILLIAM S
IPC分类号： H03J3/16 , H03J3/18
CPC分类号： H03J3/16 , H03J3/185

27. 发明授权

US5040239A Tuning circuit and receiver 失效
标题翻译：调谐电路和接收器
公开(公告)号：US5040239A
公开(公告)日：1991-08-13
申请号：US398170
申请日：1989-08-23
申请人： Hiroshi Kondo , Takeyuki Kouchi
发明人： Hiroshi Kondo , Takeyuki Kouchi
IPC分类号： H03J3/20 , H03J3/16 , H04B1/18
CPC分类号： H04B1/18 , H03J3/16
摘要： In a tuning circuit, use is made of a current-controlled type variable inductor comprising a tuning coil and a control coil for controlling the magnetic flux density of the tuning coil. The tuning coil is connected in series with the antenna; a tuning capacitor is connected to each end of tuning coil; and by controlling a current flowing through the control coil, magnetic flux induced in the tuning coil is increased, decreased or cancelled so that the magnetic flux density of the tuning coil is adjusted to control the inductance thereof, thereby permitting the tuning circuit to be tuned to any desired frequency in the receiving frequency band.
摘要翻译：在调谐电路中，使用包括调谐线圈和用于控制调谐线圈的磁通密度的控制线圈的电流控制型可变电感器。调谐线圈与天线串联; 调谐电容器连接到调谐线圈的每一端; 并且通过控制流过控制线圈的电流，在调谐线圈中感应的磁通增加，减小或消除，使得调谐线圈的磁通密度被调节以控制其电感，从而允许调谐电路被调谐到接收频带中的任何期望的频率。

28. 发明授权

US4817200A Tracking YIG tuned filter-mixer 失效
标题翻译：跟踪YIG调谐滤波器
公开(公告)号：US4817200A
公开(公告)日：1989-03-28
申请号：US19147
申请日：1987-02-26
申请人： Hassan Tanbakuchi
发明人： Hassan Tanbakuchi
IPC分类号： G01R23/16 , G01R23/173 , H03J3/16 , H03J7/02 , H03J7/18 , H04B1/26
CPC分类号： G01R23/173 , H03J3/16 , H03J7/18
摘要： A tracking YIG tuned filter-mixer circuit is provided. In the preferred embodiment, four YIG-tuned resonators are combined to provide a tracking filter-mixer with a switched input. Field coils produce a magnetic tuning field that is uniform over the four YIG resonators. The first YIG resonator acts as the first stage of the filter, and in combination with a PIN diode circuit switches the RF input signal either to an output port or into the succeeding stages of the filter mixer. The second YIG resonator acts as the second stage of the filter. The third YIG resonator acts as the third stage of the filter, and as a fundamental mixer for combining the input RF signal with a swept LO signal to produce the IF output signal. The fourth YIG resonator acts as a discrimintor, comparing the LO frequency to the filter tuning frequency to generate an error signal for the field coil drive circuit. A small magnetic field coil over the fourth YIG resonator produces an offset magnetic field, tuning the fourth YIG resonator to the swept LO frequency, above the other three resonators by the IF frequency, so that the three YIG resonators that comprises the filter stages track the LO but are tuned to the RF frequency.

29. 发明授权

US4498064A Pushbutton tuner with staggered tuning coils 失效
标题翻译：具有交错调谐线圈的按钮调谐器
公开(公告)号：US4498064A
公开(公告)日：1985-02-05
申请号：US439112
申请日：1982-11-04
申请人： Takao Chaki
发明人： Takao Chaki
IPC分类号： H03J3/16 , H03J5/08 , H03J5/12 , H05K1/02 , H05K1/18 , H03J5/32
CPC分类号： H03J5/12 , H05K1/0213 , H05K1/18
摘要： A pushbutton tuner wherein tuning coils are disposed in two decks, upper and lower, and the upper or lower tuning coils are disposed in front of the others. A printed circuit board to be connected to said tuning coils by lead wires is divided in two parts and each part is disposed close to the tuning coils in the associated deck.
摘要翻译：一种按钮调谐器，其中调谐线圈设置在两个上下两个面板中，并且上或下调谐线圈设置在其他的前面。通过引线连接到所述调谐线圈的印刷电路板被分成两部分，并且每个部分靠近相关联的甲板中的调谐线圈设置。

30. 发明授权

US4480489A Crank mechanism in a pushbutton tuner 失效
标题翻译：曲柄调谐器中的曲柄机构
公开(公告)号：US4480489A
公开(公告)日：1984-11-06
申请号：US327980
申请日：1981-12-07
申请人： Takao Chaki
发明人： Takao Chaki
IPC分类号： H03J3/16 , F16H55/17 , H03J1/08 , H03J5/08 , H03J5/12 , F16H35/18
CPC分类号： H03J5/12 , H03J1/08 , Y10T74/19623
摘要： A crank mechanism in a pushbutton tuner which comprises a side plate secured on associated one end of crank bars and a crank gear mounted on the outer surface of the side plate, both being supported together by a caulked shaft and one of the crank gear and the side plate being formed with a protuberance formed by deforming a part thereof while the other is formed with a hole for receiving the protuberance.
摘要翻译：一种按钮调谐器中的曲柄机构，其包括固定在曲柄杆的相关联的一端上的侧板和安装在侧板的外表面上的曲柄齿轮，两者都由铆接轴支撑在一起，曲柄齿轮和侧板形成有通过使其一部分变形而形成的突起，而另一个形成有用于接收突起的孔。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式