公开(公告)号：US4817195A

公开(公告)日：1989-03-28

申请号：US137148

申请日：1987-12-23

申请人： Kazuhiko Kubo ,  Akira Usui ,  Minoru Miyata ,  Hideyuki Ikuhara ,  Hiroyuki Nagai ,  Tadashi Yamada

发明人： Kazuhiko Kubo ,  Akira Usui ,  Minoru Miyata ,  Hideyuki Ikuhara ,  Hiroyuki Nagai ,  Tadashi Yamada

IPC分类号： H03J7/02 ,  H03J7/06 ,  H04B1/10 ,  H04B1/16

CPC分类号： H03J7/065

摘要： A channel selection apparatus having a double superhet tuner section (15) for converting one of a plurality of television channels contained in an input signal to a fixedly predetermined channel, includes an AFC circuit (11) for producing a frequency control voltage to execute closed-loop frequency control of the second local oscillator (5) of the tuner section while an AFC switch (16) is set in a first condition, whereas when the AFC switch is set in a second condition, a fixed frequency control voltage is applied to the second local oscillator and the frequency control voltage is applied to adjust the oscillation frequency of the first local oscillator (2) of the tuner section such as to compensate for any offset in the transmission frequency of a currently selected channel.

公开(公告)号：US4835492A

公开(公告)日：1989-05-30

申请号：US163814

申请日：1988-02-11

申请人： Hideyuki Ikuhara ,  Akira Usui ,  Kazuhiko Kubo ,  Hiroyuki Nagai ,  Tetsuo Kutsuki

发明人： Hideyuki Ikuhara ,  Akira Usui ,  Kazuhiko Kubo ,  Hiroyuki Nagai ,  Tetsuo Kutsuki

IPC分类号： H03B1/00 ,  H03B5/18 ,  H03D7/00 ,  H03J7/02 ,  H03J7/08

CPC分类号： H03B5/1805 ,  H03J7/08 ,  H03B2201/0208 ,  H03D7/00

摘要： Disclosed is a local oscillator using a dielectric coaxial resonator (27), which is availably used as a fixed local oscillator in double-spot tuners and CATV converters, and which is arranged so that an AFC voltage is applied to a variable-capacitance diode (23) from an output terminal (E) of a frequency control circuit through a first resistor (35), the variable-capacitance diode having its one end being connected to a center conductor of a dielectric coaxial resonator (27) through a capacitor (25) and its other end being AC grounded, and that a first reference potential (V.sub.A) lower than a source voltage (V.sub.CC) by a predetermined value is given to the variable-capacitance diode (23), the one end of the variable-capacitance diode (23) being connected to the source voltage (V.sub.CC) through a second resistor (22), whereby the voltage impressed across the variable-capacitance diode (23) can be kept constant regardless of a variation in the source voltage to thereby prevent the oscillation frequency from fluctuating.

摘要翻译： 公开了一种使用电介质同轴谐振器（27）的本地振荡器，其可用作双点调谐器和CATV转换器中的固定本地振荡器，并且被布置成使得AFC电压被施加到可变电容二极管 23）通过第一电阻器（35）从频率控制电路的输出端子（E）输出，其一端通过电容器（25）连接到电介质同轴谐振器（27）的中心导体 ）并且其另一端被交流接地，并且将低于源电压（VCC）的预定值的第一参考电位（VA）提供给可变电容二极管（23），可变电容的一端 二极管（23）通过第二电阻（22）连接到源电压（VCC），由此不管源极电压的变化如何，跨越可变电容二极管（23）的电压保持恒定，从而防止 振荡频率 通货膨胀波动。

公开(公告)号：US4764736A

公开(公告)日：1988-08-16

申请号：US878874

申请日：1986-05-23

申请人： Akira Usui ,  Tadashi Yamada ,  Kazuhiko Kubo ,  Hiroyuki Nagai

发明人： Akira Usui ,  Tadashi Yamada ,  Kazuhiko Kubo ,  Hiroyuki Nagai

IPC分类号： H03F1/08 ,  H03F3/19 ,  H03F3/191 ,  H03F1/34

CPC分类号： H03F3/191 ,  H03F1/083 ,  H03F3/19

摘要： In an amplifier for a high frequency signal used to amplify a signal having a high frequency in a television tuner, a receiver for satellite broadcasting, and the like, at least two stages of dc-coupled grounded-emitter type amplifiers (Q.sub.1, Q.sub.2) are configured in an integrated circuit, a resistor (R.sub.13) is connected between an emitter of the grounded-emitter amplifier (Q.sub.2) in the second stage and the grounding, a terminal for connecting an external device is disposed to be connected via a bonding wire to the emitter of the grounded-emitter amplifier (Q.sub.2) in the second stage, and a filter circuit (11) including an inductance of the bonding wire and developing a low impedance for a particular frequency is disposed between the terminal and the external grounding.

摘要翻译： PCT No.PCT / JP85 / 00541 Sec。 371日期1986年5月23日第 102（e）日期1986年5月23日PCT提交1985年9月30日PCT公布。 出版物WO86 / 02214 日期：1986年4月10日。在用于在电视调谐器中放大具有高频率的信号的高频信号放大器，用于卫星广播的接收机等，至少两级直流耦合接地 - 发射极 型放大器（Q1，Q2）被配置在集成电路中，电阻器（R13）连接在第二级的接地 - 发射极放大器（Q2）的发射极和接地之间，设置用于连接外部设备的端子 通过接合线连接到第二级中的接地发射极放大器（Q2）的发射极，并且包括具有针对特定频率的接合线的电感并且形成低阻抗的滤波器电路（11）被布置在 端子和外部接地。

公开(公告)号：US4861941A

公开(公告)日：1989-08-29

申请号：US184490

申请日：1988-02-11

申请人： Kazuhiko Kubo ,  Susumu Saitou ,  Akira Usui ,  Hiroyuki Nagai

发明人： Kazuhiko Kubo ,  Susumu Saitou ,  Akira Usui ,  Hiroyuki Nagai

IPC分类号： H05K1/02 ,  H05K1/11 ,  H05K3/00 ,  H05K3/34 ,  H05K9/00

CPC分类号： H05K9/006 ,  H05K3/341 ,  H05K3/3452 ,  H05K9/0039 ,  H05K1/0218 ,  H05K1/113 ,  H05K1/115 ,  H05K2201/0979 ,  H05K2201/10371 ,  H05K2203/1394 ,  H05K3/0094 ,  Y02P70/613 ,  Y10S174/34 ,  Y10T29/49124 ,  Y10T29/49165

摘要： The present invention is directed to a shielding device of a double-sided printed substrate used in a circuit for processing a high frequency signal such as a television tuner circuit and the like, which is arranged such that a first grounding conductor film (12a) is formed on one side of the substrate (11), a second grounding conductor film (12b) is formed on the other side of the substrate (11), both the conductor films (12a, 12b) are connected by a through-hole conductor (15b), an opening portion of a through hole (15a) at at least one side is covered and closed by a solder resist (16), and the shielding plate (13) is mounted on the conductor film (12a) on the one side and both members are soldered. In particular, when a ceramic substrate is used as the substrate (11), it is arranged so as to obtain reliable soldering and satisfactory shielding effects while ensuring the strength thereof.

摘要翻译： PCT No.PCT / JP87 / 00396 Sec。 371日期1988年2月11日 102（e）日期1988年2月11日PCT Filted 1987年6月18日PCT公布。 公开号WO87 / 07998 日期为1987年12月30日。本发明涉及用于处理诸如电视调谐器电路等的高频信号的电路中的双面印刷基板的屏蔽装置，其被布置为使得第一 接地导体膜（12a）形成在基板（11）的一侧，在基板（11）的另一侧上形成第二接地导体膜（12b），两个导体膜（12a，12b）都被连接 通过通孔导体（15b），至少一侧的通孔（15a）的开口部被阻焊剂（16）覆盖并封闭，并且将屏蔽板（13）安装在导体膜 （12a）并且两个构件被焊接。 特别地，当使用陶瓷基板作为基板（11）时，其布置成在确保其强度的同时获得可靠的焊接和令人满意的屏蔽效果。

公开(公告)号：US4772862A

公开(公告)日：1988-09-20

申请号：US942485

申请日：1986-12-16

申请人： Kazuhiko Kubo ,  Akira Usui ,  Hiroyuki Nagai ,  Hideyuki Miyake ,  Takashi Fujino

发明人： Kazuhiko Kubo ,  Akira Usui ,  Hiroyuki Nagai ,  Hideyuki Miyake ,  Takashi Fujino

IPC分类号： H04B1/08 ,  H03H7/01 ,  H04B1/26

CPC分类号： H03H7/01

摘要： On an upper surface of a substrate (20) a band-pass filter (29) is provided, and on the opposite (lower) surface of a substrate (20) a low-pass filter comprising a conductive layer pattern (27) and capacitors (22,23) is provided, wherein a conductive layers (27) are provided on substantially the entire area of the upper surface excluding portions for terminals and on the lower surface excluding portions for the low-pass filter and the terminals, and by connecting both conductive layers by means of a row of through-hole connections, the input terminal (24) and the output terminal (25) are shielded from each other.

摘要翻译： 在衬底（20）的上表面上设置有带通滤波器（29），并且在衬底（20）的相对（下）表面上，包括导电层图案（27）和电容器（20）的低通滤波器 （22,23），其中在上表面的基本上整个区域上设置导电层（27），不包括用于端子的部分和用于低通滤波器和端子的不同部分的下表面，并且通过连接 通过一排通孔连接的两个导电层，输入端子（24）和输出端子（25）彼此屏蔽。

公开(公告)号：US4797638A

公开(公告)日：1989-01-10

申请号：US30852

申请日：1987-04-10

申请人： Akira Usui ,  Kazuhiko Kubo ,  Hiroyuki Nagai

发明人： Akira Usui ,  Kazuhiko Kubo ,  Hiroyuki Nagai

IPC分类号： H03B1/00 ,  H03B5/18 ,  H03B5/12

CPC分类号： H03B5/1847 ,  H03B2200/0034 ,  H03B2200/004 ,  H03B2201/0208

摘要： The local oscillation circuit in accordance with the present invention is characterized as follows. The collector of an oscillation transistor is grounded for atlernating current. A series resonance circuit consisting of a variable capacitance diode and a resonator is connected to the base of the oscillation transistor. The other end of the series resonance circuit is grounded for alternating current. The emitter of the oscillation transistor is connected to the collector of an amplifying transistor. The emitter is grounded through a capacitor that removes or reduces the a.c. component and passes the d.c. component. An oscillation signal taken from the emitter of the oscillation transistor is fed to the base of the amplifier transistor. A local oscillation output signal is taken from the collector of the amplifier transistor, and bias potential to the amplifier transistor is impressed from the power source to the base of the amplifier transistor. With this arrangement, the current in the oscillation transistor is stabilized, even with a change in the d.c. control voltage supplied to the resonance circuit, to improve the reliability and performance of the circuit.

摘要翻译： PCT No.PCT / JP86 / 00359 Sec。 371日期：1987年4月10日 102（e）日期1987年4月10日PCT提交1986年7月14日PCT公布。 公开号WO87 / 00993 日本1987年2月12日。根据本发明的本地振荡电路的特征如下。 振荡晶体管的集电极接地，用于使电流过大。 由可变电容二极管和谐振器组成的串联谐振电路连接到振荡晶体管的基极。 串联谐振电路的另一端为交流电接地。 振荡晶体管的发射极连接到放大晶体管的集电极。 发射极通过电容器接地，可消除或减少电流。 组件并通过d.c. 零件。 从振荡晶体管的发射极取得的振荡信号被馈送到放大晶体管的基极。 从放大器晶体管的集电极获取本地振荡输出信号，并且将放大器晶体管的偏置电压从电源施加到放大器晶体管的基极。 通过这种布置，即使在直流电压的变化中，振荡晶体管中的电流也稳定。 提供给谐振电路的控制电压，以提高电路的可靠性和性能。

公开(公告)号：US4677692A

公开(公告)日：1987-06-30

申请号：US749416

申请日：1985-06-27

申请人： Seiji Sakashita ,  Takeshi Sato ,  Hiroyuki Nagai ,  Kazuhiko Kubo ,  Akira Usui

发明人： Seiji Sakashita ,  Takeshi Sato ,  Hiroyuki Nagai ,  Kazuhiko Kubo ,  Akira Usui

IPC分类号： H03F1/02 ,  H03D7/00 ,  H03D7/12 ,  H03D7/14 ,  H04B1/18 ,  H04B1/26

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D2200/0023 ,  H03D2200/0043 ,  H03D2200/0047 ,  H03D2200/0084 ,  H03D7/125

摘要： A frequency conversion apparatus for converting a high frequency signal into an intermediate frequency signal includes a mixer section for mixing a high frequency signal with a local oscillator signal so as to obtain an intermediate frequency signal, and an amplifier connected to the mixer section via a high frequency stopping circuit for supplying a constant direct current to the mixer section as a constant current source. A current flowing in the mixer section when the local oscillator signal is applied is kept substantially equal to a direct current flowing in the mixer section when no local oscillator signal is applied thereto. The amplifier is used for amplifying either the high frequency signal or the intermediate frequency signal, or both signals at the same time.

摘要翻译： 一种用于将高频信号转换为中频信号的变频装置包括：混频器部分，用于将高频信号与本地振荡器信号混频以获得中频信号;以及放大器，通过高频连接到混频器部分 频率停止电路，用于向混频器部分提供恒定的直流电流作为恒定电流源。 当施加本机振荡器信号时，在混频器部分中流动的电流基本上等于在没有施加本地振荡器信号的情况下在混频器部分中流动的直流电流。 该放大器用于同时放大高频信号或中频信号，或两个信号。

公开(公告)号：US4751475A

公开(公告)日：1988-06-14

申请号：US46916

申请日：1987-03-20

申请人： Kazuhiko Kubo ,  Akira Usui ,  Hiroyuki Nagai

发明人： Kazuhiko Kubo ,  Akira Usui ,  Hiroyuki Nagai

IPC分类号： H03B5/18 ,  H03B1/00 ,  H03B5/12 ,  H03L1/02 ,  H03B5/04

CPC分类号： H03L1/023 ,  H03B5/1221 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2201/0208 ,  H03B5/1811

摘要： The present invention relates to a local oscillation apparatus which is used as a local oscillator of a communication apparatus or as a fixed local oscillator of a tuner. The present invention comprises a coaxial resonator (1) and an amplifying circuit (26) having an output end connected to a central conductive member of the coaxial resonator (1) through a first capacitor (2), an input end connected to the central conductive member through a second capacitor (3), and a variable capacitance diode (5) having one end connected to the central conductive member of the coaxial resonator (1) through a third capacitor (4) and the other end grounded so as to permit an alternating current only to be flowed. The circuit is characterized by such a constitution that an oscillation frequency is varied by a voltage applied to the variable capacitance diode (5), a cause of temperature drift of an oscillation frequency can be almost eliminated, and a stable oscillation can be accomplished by only compensation of the temperature characteristics of the coaxial resonator (1).

摘要翻译： PCT No.PCT / JP86 / 00358 Sec。 371日期1987年3月20日 102（e）1987年3月20日PCT PCT 1986年7月14日PCT公布。 公开号WO87 / 00706 日本1987年1月29日。本发明涉及一种本地振荡装置，其用作通信装置的本地振荡器或调谐器的固定本地振荡器。 本发明包括同轴谐振器（1）和放大电路（26），其输出端通过第一电容器（2）连接到同轴谐振器（1）的中心导电构件，输入端连接到中心导电 构件通过第二电容器（3）和可变电容二极管（5），其一端通过第三电容器（4）连接到同轴谐振器（1）的中心导电构件，另一端接地，以允许 交流电流只能流动。 该电路的特征在于，通过施加到可变电容二极管（5）的电压来改变振荡频率，可以几乎消除振荡频率的温度漂移的原因，并且可以仅通过仅实现稳定的振荡 补偿同轴谐振器（1）的温度特性。

公开(公告)号：US5093922A

公开(公告)日：1992-03-03

申请号：US381732

申请日：1989-07-18

申请人： Kazuhiko Kubo ,  Akira Usui ,  Minoru Ueda

发明人： Kazuhiko Kubo ,  Akira Usui ,  Minoru Ueda

IPC分类号： H04B1/26 ,  H03D7/16 ,  H04N7/20

CPC分类号： H03D7/161 ,  H04N7/20

摘要： The present invention relates to a receiving apparatus which can be used in receiving a satellite broadcast by using a cable television system. The receiving apparatus uses a double-super type converter or tuner (2) having a first frequency-conversion portion (15) and a second frequency-conversion portion (19). A conversion output terminal (G) for feeding a signal to a BS tuner (5) is provided at the output side of the first frequency-conversion portion (15). A BA signal converted into a UHF band or a superhigh band is fed to the first frequency-conversion portion (15) through a cable, so that, after frequency conversion, a BS-IF signal is taken out from the conversion output terminal (G). Thus, the BS-IF signal can be fed to the BS tuner (5) without using any special up-converter.

摘要翻译： PCT No.PCT / JP88 / 01203 Sec。 371日期：1989年7月18日 102（e）日期1989年7月18日PCT提交1988年11月29日PCT公布。 出版物WO89 / 05548 日期：1989年6月15日。本发明涉及一种可用于通过使用有线电视系统接收卫星广播的接收设备。 接收装置使用具有第一频率转换部分（15）和第二频率转换部分（19）的双超型转换器或调谐器（2）。 用于将信号馈送到BS调谐器（5）的转换输出端（G）设置在第一频率转换部分（15）的输出侧。 转换成UHF频带或超高频带的BA信号通过电缆馈送到第一变频部分（15），从而在频率转换之后，从转换输出端（G ）。 因此，BS-IF信号可以被馈送到BS调谐器（5）而不使用任何特殊的上变频器。

公开(公告)号：US5355532A

公开(公告)日：1994-10-11

申请号：US31056

申请日：1993-03-29

申请人： Kazuhiko Kubo ,  Akira Usui ,  Akira Mishima

发明人： Kazuhiko Kubo ,  Akira Usui ,  Akira Mishima

IPC分类号： H03D7/16 ,  H03J5/24 ,  H04B1/16 ,  H04N5/44 ,  H04N7/20 ,  H04B1/10

CPC分类号： H03J5/242 ,  H03D7/161

摘要： The present invention relates to a television tuner capable of receiving television broadcasting, CATV and satellite broadcasting. The television tuner includes a double superheterodyne tuner for receiving television signals, having an up-converter, a down-converter and a coupler for coupling the up-converter and down-converter, and the television tuner also includes a BS second mixer portion and a FM demodulator, for receiving signals from a broadcasting satellite. The double superheterodyne tuner, the BS second mixer portion and the FM demodulator are disposed in a housing, a combination of the up-converter and the BS second mixer portion is desiredly separated from the down-converter, the coupler is disposed in a space between the combination and the down-converter, and the FM demodulator is disposed in the remaining space of the housing.

摘要翻译： 本发明涉及能够接收电视广播，有线电视和卫星广播的电视调谐器。 电视调谐器包括用于接收电视信号的双重超外差调谐器，具有用于耦合上变频器和下变频器的上变频器，下变频器和耦合器，并且电视调谐器还包括BS第二混频器部分和 FM解调器，用于从广播卫星接收信号。 双重超外差调谐器，BS第二混频器部分和FM解调器设置在壳体中，上变频器和BS第二混频器部分的组合期望地与下变换器分离，耦合器设置在 组合和下变频器以及FM解调器被布置在壳体的剩余空间中。