专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 实用新型

JPS62203511U 失效
公开(公告)号：JPS62203511U
公开(公告)日：1987-12-25
申请号：JP9059786
申请日：1986-06-16
IPC分类号： H03F1/30 , H03F3/19 , H03H7/25

72. 发明专利

JPS62237807A HIGH FREQUENCY ATTENUATION CIRCUIT 失效
公开(公告)号：JPS62237807A
公开(公告)日：1987-10-17
申请号：JP8190786
申请日：1986-04-08
申请人： NIPPON DENGYO KOSAKU KK
发明人： HATANAKA HIROSHI
IPC分类号： H03H7/25
摘要： PURPOSE:To obtain a excellent attenuation characteristic over a broad band by forming two pin diodes and the 1st-4th current limit resistors and applying a positive bias voltage to a connecting point between the 1st and 3rd current limit resistors. CONSTITUTION:The pin diodes Dl, D2 and the current limit resistors R1-R4 form a bridge circuit and a positive bias voltage is fed to a terminal T3. When Rl/R2=R3/R4, R1

73. 发明专利

JPS62137906A VARIABLE ATTENUATOR WITH TEMPERATURE COMPENSATION 失效
公开(公告)号：JPS62137906A
公开(公告)日：1987-06-20
申请号：JP27973985
申请日：1985-12-11
申请人： NEC CORP
发明人： MIYA TATSUYA
IPC分类号： H03H7/25 , H03G3/10
摘要： PURPOSE:To eliminate completely the temperature fluctuation of the attenuation of a variable attenuator by using an output of a voltage generating circuit utilizing a temperature sensor as an input voltage of a logarithmic amplifier and using an output of the logarithmic amplifier as a bias of a variable attenuator. CONSTITUTION:The voltage generating circuit 1 outputs a voltage proportional to temperature and gives it to an operational amplifier 4. An inverse amplifier comprising resistors 5, 6 and an amplifier 4 provides a temperature dependancy with an optional rate of change with respect to temperature change to the left end voltage of a resistor 10 by changing the gain. When the same kind of PIN diodes 8, 12 are used, the current flowing to the diode 12 is a ratio of the left end voltage across the resistor 10 to the resistance of the resistor 10 at all times independently of the temperature. In this case, since linear relation exists in the impedance of the diode in driving the diode by a constant current, the voltage has a linear relation to the temperature so as to avoid the impedance change against the temperature. The complete temperature compensation is attained by avoiding the fluctuation of the impedance thereby preventing the fluctuation of attenuation.

74. 发明专利

JPS61163703A PIN DIODE ATTENUATOR 失效
公开(公告)号：JPS61163703A
公开(公告)日：1986-07-24
申请号：JP465085
申请日：1985-01-14
申请人： NEC CORP
发明人： AIHARA SHIGENOBU , MATSUZAKI YASUO
IPC分类号： H01P3/08 , H01P1/22 , H03H7/25
摘要： PURPOSE:To improve the attenuation quantity and to stabilize the attenuation characteristic by connecting a high frequency signal input/output terminal and a PIN diode by a microstrip line having a length which is roughly equal to integer multiple of a length of 1/4 of a wavelength of an attenuation object signal. CONSTITUTION:An equivalent circuit in case when a bias current flows to a PIN diode, and its forward resistance value and a contact resistance value between a conductor 16 and a conductor 17 are r4 and r0, respectively is shown. First of all, a Z matrix Zrd of only rd becomes an equation I. Accordingly, this S matrix Srd becomes an equation II. Accordingly, an X matrix SA of a part of A becomes an equation III. In case (n) is a natural number, at the time of 2theta1-(2n+1)pi, namely, when a length of a transmission line 2' is integer multiple of 1/4 wavelength, SA11-+1 is obtained, an input terminal of a circuit A becomes an open state, a ground current does not flow, an incident power which has been applied between input/output terminals 11-10 is not applied to terminals 15-14, and the attenuation quantity between the input/output terminals 11-10 and 21-20 is determined by only [2rde /(1+2rd)] of the equation III.

75. 发明专利

JPS6171712A Variable attenuator 失效
标题翻译：可变衰减器
公开(公告)号：JPS6171712A
公开(公告)日：1986-04-12
申请号：JP19412584
申请日：1984-09-17
申请人： Sanyo Electric Co Ltd
发明人： MIYAMAE SHOJI
IPC分类号： H03H7/25 , H03H7/24
摘要： PURPOSE: To increase the attenuation without using an expensive PIN diode by providing the 1st variable impedance element given to the 1st electrode and the 2nd variable impedance element given to the 2nd electrode and leading out an output signal from a common connecting point of the 2nd and 1st electrodes of the 1st and 2nd variable impedance elements.
CONSTITUTION: When a signal is impressed to an input terminal 1, signals Vs, -Vs having equal amplitude but a phase difference of 180°C appear respectively at points D and E. In bringing the voltage V
1 of the variable power supply E
2 to zero, diodes D
4 , D
5 are noncoductive, each impedance is equal, the signals Vs, -Vs are cancelled at the point E and no signal appears at the output terminal 2. In bringing the voltage V
1 to a prescribed value other than 0, since a difference is caused to the impedance of both the diodes, a signal having an amplitude in response to the difference in the impedance appears at the output an amplitude in response to the difference in the impedance appears at the output terminal 2. Thus, the amplitude of the signal output is varied from 0 to the prescribed value by changing the V
1 .
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过提供给予第一电极的第一可变阻抗元件和给予第二电极的第二可变阻抗元件，并从第二电极的公共连接点引出输出信号，增加衰减，而不使用昂贵的PIN二极管，第一和第二可变阻抗元件的第一电极。构成：当向输入端子1施加信号时，分别具有相等振幅但180度相位差的信号Vs，-Vs分别出现在D点和E点。使可变电源E2的电压V1 零，二极管D4，D5是非导体的，每个阻抗相等，信号Vs，-Vs在点E处被消除，并且在输出端子2处没有信号出现。在使电压V1达到除0以外的规定值的情况下对两个二极管的阻抗造成差异，在输出端出现响应于阻抗差的振幅的信号，出现在输出端2处的阻抗差出现的振幅。因此，振幅通过改变V1，信号输出从0变化到规定值。

76. 发明专利

JPS6158308A Programmable variable attenuator 失效
标题翻译：可编程可变衰减器
公开(公告)号：JPS6158308A
公开(公告)日：1986-03-25
申请号：JP17937184
申请日：1984-08-30
申请人： Nec Corp
发明人： MINAMOTO TSUNESUKE
IPC分类号： H03H7/25 , H03H7/24
CPC分类号： H03H7/24
摘要： PURPOSE:To obtain a programmable variable attenuator which is small in size and responds at a high speed, by storing the variable resistance characteristics of a variable resistance element in a control circuit which controls the variable resistance element. CONSTITUTION:A control section 16 is composed of a storage section 13, DA converter 14, and reference voltage source 13. When external data are inputted in external data input terminals 12a-12n, parameters corresponding to the external data are outputted from the storage section 13. The DA converter 14 converts the parameters into analog information, namely, analog information corresponding to the control current-resistance value characteritics of a variable resistance element 6 and outputs the analog information. As a result, a desired control current is outputted from a control terminal 16a. Therefore, the attenuation quantity of the variable resistance element 6 can optionally be set at a high response. Therefore, a programmable variable attenuator which is small in size and responds at a high speed can be obtained.
摘要翻译：目的：通过将可变电阻元件的可变电阻特性存储在控制可变电阻元件的控制电路中，获得尺寸小，响应速度快的可编程可变衰减器。构成：控制部分16由存储部分13，DA转换器14和参考电压源13组成。当外部数据输入到外部数据输入端子12a-12n时，与外部数据对应的参数从存储部分输出 DA转换器14将参数转换为模拟信息，即与可变电阻元件6的控制电流 - 电阻值特征对应的模拟信息，并输出模拟信息。结果，从控制端子16a输出期望的控制电流。因此，可变电阻元件6的衰减量可以可选地被设定为高响应。因此，可以获得尺寸小并以高速响应的可编程可变衰减器。

77. 实用新型

JPS6140030U JPS6140030U - 失效
公开(公告)号：JPS6140030U
公开(公告)日：1986-03-13
申请号：JP12388684
申请日：1984-08-13
IPC分类号： H03H7/25

78. 发明专利

JPS6130111A Variable equalizer 失效
标题翻译：可变均衡器
公开(公告)号：JPS6130111A
公开(公告)日：1986-02-12
申请号：JP14970084
申请日：1984-07-20
申请人： Fujitsu Ltd
发明人： HATA TERUO
IPC分类号： H03H7/01 , H03G5/02 , H03H7/25
CPC分类号： H03G5/025 , H03H7/255
摘要： PURPOSE:To obtain a desired variable characteristic in a wide range by connecting a constant voltage source to both ends of two PIN diodes connected in series and connecting a variable voltage source to both ends of one PIN diode. CONSTITUTION:A output voltage E0 of an operational amplifier OP2 constituting the constant voltage source is applied to both ends of PIN diodes D1 and D2 connected in series. The output voltage of an operational amplifier OP1 is changed by adjustment of a variable voltage Es, and an output voltage E1 of the operational amplifier OP1 constituting the variable voltage source is applied to both ends of the diode D1. Consequently, the voltage Es is adjusted to change resistance volues of diodes D1 and D2 so that their logarithmic values are inversely proportional to each other, thus obtaining a desired characteristic asa variable equalizer.
摘要翻译：目的：通过将恒压源连接到串联连接的两个PIN二极管的两端并将可变电压源连接到一个PIN二极管的两端，以获得广泛范围内的期望变量特性。构成：构成恒压源的运算放大器OP2的输出电压E0被施加到串联连接的PIN二极管D1和D2的两端。运算放大器OP1的输出电压通过调整可变电压Es而变化，构成可变电压源的运算放大器OP1的输出电压E1被施加到二极管D1的两端。因此，调整电压Es以改变二极管D1和D2的电阻量，使得其对数值彼此成反比，从而获得作为可变均衡器的期望特性。

79. 发明专利

JPS60260220A RF VARIABLE ATTENUATION CIRCUIT 失效
公开(公告)号：JPS60260220A
公开(公告)日：1985-12-23
申请号：JP11749584
申请日：1984-06-06
申请人： SHARP KK
发明人： MATSUURA SHIYUUJI
IPC分类号： H03H7/25 , H04B1/18
摘要： PURPOSE:To prevent deterioration of a characteristic at a high frequency at a minimum gain by grounding a connecting point of PIN diodes connected in series via a capacitor of a small capacitance. CONSTITUTION:The degree of conductivity of the PIN diodes 20, 21 is controlled depending on the quantity of an AGC voltage impressed to an AGC terminal 23. As a result, an RF signal from an input terminal 16 is subject to a prescribed amount of attenuation and led to an output terminal 17. Since the connecting point of the diodes 20, 21 is grounded via the capacitor 22 of a small capacitance, the junction capacitance of the diodes 20, 21 is cancelled by the capacitive component of the capacitor 22 thereby being reduced substantially. Then the deterioration of the characteristic at high frequencies due to the junction capacitance component of the diodes 20, 21 at the minimum gain is prevented.

80. 发明专利

JPS6057728B2 失效
公开(公告)号：JPS6057728B2
公开(公告)日：1985-12-17
申请号：JP16078577
申请日：1977-12-26
申请人： NIPPON ELECTRIC CO
发明人： HASEGAWA TOSHIO
IPC分类号： H03H7/25

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