-
公开(公告)号：US4352076A
公开(公告)日：1982-09-28
申请号：US186738
申请日：1980-09-12
CPC分类号： H01P1/20381
摘要： In a band pass filter of micro strip line structure, an input conductor, an output conductor, a first open end conductor and a second open end conductor are provided. The first and the second open end conductors are located opposite to the input and the output conductors forming narrow gaps between said open end conductors and said input and output conductors. The mutual inductance between the first and the second open end conductors is adjusted by selecting the width of the gap between the first and the second open end conductors.
摘要翻译： 在微带线结构的带通滤波器中，提供输入导体，输出导体，第一开口端导体和第二开口端导体。 第一和第二开放端导体位于与输入端相对的位置，输出导体在所述开口端导体与所述输入和输出导体之间形成窄间隙。 通过选择第一和第二开口端导体之间的间隙的宽度来调节第一和第二开口端导体之间的互感。
-
2.发明授权Wide-band tuner having a temperature-compensated microstrip resonator arrangement 失效具有温度补偿微带谐振器装置的宽带调谐器
公开(公告)号：US4491976A
公开(公告)日：1985-01-01
申请号：US436357
申请日：1982-10-25
CPC分类号： H01P7/082 , H03D7/163 , H03J7/065 , H03L1/021 , H03B5/1852
摘要： A double-superheterodyne tuner for a television receiver comprises a tunable oscillator, a fixed oscillator, two mixer stages and a band-pass filter between the mixer stages, and operates at a GHz intermediate frequency between the mixer stages. The two oscillators and the bandpass filter each includes a microstrip line resonator formed in a dielectric body having substantially the same dielectric constant and dielectric constant temperature coefficient to each other, thereby compensating the variation of the resonant frequency in the resonator due to an ambient temperature variation.
摘要翻译： 用于电视接收机的双超外差调谐器包括可调谐振荡器，固定振荡器，混频器级之间的两个混频器级和带通滤波器，并且在混频器级之间以GHz的中频进行操作。 两个振荡器和带通滤波器各自包括形成在彼此具有基本上相同的介电常数和介电常数温度系数的电介质体中的微带线谐振器，从而补偿由于环境温度变化而引起的共振频率的变化 。
-
公开(公告)号：US4353132A
公开(公告)日：1982-10-05
申请号：US226826
申请日：1981-01-21
CPC分类号： H01P3/081
摘要： A double superheterodyne tuner including a first and a second frequency converter and a bandpass filter, constituted of microstrip lines, wherein the substrate in which the bandpass filter is built is disposed back to back with the substrates in which the first and second frequency converters are constructed, with the substrate for the bandpass filter extending over the first and second frequency converters, so that a sufficient high-frequency isolation of circuit elements can be effected by the use of smaller shielding plates, the overall size can be reduced and a uniform grounded condition can be obtained.
摘要翻译： 包括由微带线构成的第一和第二频率转换器和带通滤波器的双重超外差调谐器，其中构成带通滤波器的基板与其中构成第一和第二变频器的基板背对背地背对着 用于带通滤波器的衬底在第一和第二变频器上延伸，使得可以通过使用较小的屏蔽板来实现对电路元件的充分的高频隔离，可以减小总体尺寸并且具有均匀的接地条件 可以获得。
-
公开(公告)号：US5212828A
公开(公告)日：1993-05-18
申请号：US625978
申请日：1990-12-11
CPC分类号： H04B1/26 , H03J5/244 , H04B1/1036
摘要： A receiver apparatus having a mixer circuit, an oscillator circuit and a tuner circuit is provided with a trap circuit, interposed between the tuner circuit and the mixer circuit, for removing disturbing mutual modulation waves generated by receiving two or more RF signals. Further, the mixer circuit employs a double balanced mixer structure to offset two or more disturbing mutual modulation waves.
摘要翻译： 具有混频器电路，振荡器电路和调谐器电路的接收机装置设置有陷波电路，插在调谐器电路和混频器电路之间，用于消除通过接收两个或更多个RF信号产生的干扰的互调波。 此外，混频器电路采用双平衡混频器结构来抵消两个或更多个干扰的互调制波。
-
公开(公告)号：US4589016A
公开(公告)日：1986-05-13
申请号：US508467
申请日：1983-06-28
CPC分类号： H04N7/045 , H04K1/02 , H04N7/1713
摘要： A receiving circuit for receiving an FM-modulated television signal with an energy dispersal signal superposed thereon is used for a television receiver for receiving the FM-modulated television signal. The receiving circuit is provided with a triangle wave signal generator for generating a triangle wave signal in synchronism with a vertical synchronizing signal. The energy dispersal signal superposed on the FM-modulated television signal is suppressed by frequency modulating an oscillation signal of a local oscillator by the triangle wave signal obtained.
摘要翻译： 用于接收具有叠加在其上的能量扩散信号的FM调制电视信号的接收电路用于接收FM调制电视信号的电视接收机。 接收电路具有与垂直同步信号同步产生三角波信号的三角波信号发生器。 叠加在FM调制电视信号上的能量分散信号通过利用获得的三角波信号对本地振荡器的振荡信号进行频率调制而被抑制。
-
公开(公告)号：US4564822A
公开(公告)日：1986-01-14
申请号：US541440
申请日：1983-10-13
申请人： Takeshi Saitoh , Hiroshi Hatashita
发明人： Takeshi Saitoh , Hiroshi Hatashita
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/1243 , H03B2200/0006 , H03B2200/004 , H03B2200/0042 , H03B2201/0208 , H03B2201/033
摘要： An oscillator circuit suitable for use in a local oscillator of a tuner of a television receiver set. A feedback circuit comprised of a feedback capacitor (17) is connected between a junction of a tuning diode (10) and a correcting capacitor (11) connected in series therewith and the emitter of an oscillation transistor (1). Oscillation voltage developing across the correcting capacitor is fedback to the emitter of the oscillation transistor through the feedback capacitor. When the tuning diode is conditioned to have a large capacitance value, a large oscillation voltage is fedback to the transistor through the feedback capacitor whereas when the tuning diode is conditioned to have a small capacitance value, a small oscillation voltage is fedback to the transistor through the feedback capacitor. The oscillator circuit continues to oscillate stably over a wide frequency range whenever the tuning diode changes from the small capacitance value to the large capacitance value or vice versa.
摘要翻译： 一种适用于电视接收机的调谐器的本地振荡器的振荡器电路。 包括反馈电容器（17）的反馈电路连接在调谐二极管（10）和与其串联的校正电容器（11）的结和振荡晶体管（1）的发射极之间。 在校正电容器两端产生的振荡电压通过反馈电容反馈到振荡晶体管的发射极。 当调谐二极管被调节为具有大的电容值时，通过反馈电容将大的振荡电压反馈到晶体管，而当调谐二极管调节为具有小的电容值时，将小的振荡电压反馈到晶体管 反馈电容。 只要调谐二极管从小电容值变化到大的电容值，反之亦然，振荡器电路在宽频率范围内稳定地振荡。
-
公开(公告)号：US4328531A
公开(公告)日：1982-05-04
申请号：US134623
申请日：1980-03-27
CPC分类号： H05K3/4667 , H05K1/0218 , H05K1/0306 , H05K1/092 , H05K1/162 , H05K1/167 , H05K2201/09327
摘要： A thick film multilayer substrate using a green ceramic sheet is constructed such that at least three conductor layers and at least two dielectric layers are alternately arranged in turn on the green ceramic sheet substrate, a power supply line being formed in the second conductor layer and thus interposed between the first and third conductor layers in which grounded conductors are formed.
摘要翻译： 使用生坯陶瓷片的厚膜多层基板被构造成使得至少三个导体层和至少两个电介质层依次在绿色陶瓷片基板上交替布置，电源线形成在第二导体层中，因此 介于形成有接地导体的第一和第三导体层之间。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.011 秒)
