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    • 2. 发明公开
    • HIGH IMPEDANCE RATIO WIDEBAND TRANSFORMER CIRCUIT
    • BREITBANDÜBERTRAGERSCHALTUNGMIT HOHEMIMPEDANZTRANSFORMATIONSVERHÄLTNIS
    • EP0880823A4
    • 2001-01-31
    • EP96930789
    • 1996-09-09
    • VARI L CO
    • REYNOLDS ROBERT L
    • H01F19/06H03H7/38H03H7/42
    • H03H7/42
    • A transformer circuit disclosed performs wideband impedance transformation (matching) and can be used for voltage step-up and step-down applications. The circuit disclosed is comprised of two transmission line transformers (T1, T2) and two reactive impedances (Z1, Z2) that compensate the circuit for impedance versus frequency. The circuit disclosed performs a very wideband impedance ratio of 1:9. The circuit may have different turns ratios for T1 and T2 and different values for Z1 and Z2 to accommodate rational, fractional and integer values of transformation up to an impedance ratio of 16:1. The addition of a balun to the output provides a balanced output.
    • 所公开的变压器电路执行宽带阻抗变换(匹配)并且可以用于升压和降压应用。 所公开的电路由两个传输线变压器(T1,T2)和两个无功阻抗(Z1,Z2)组成,这两个无源阻抗对电路进行阻抗与频率的补偿。 所公开的电路执行1:9的非常宽带阻抗比。 该电路对于T1和T2可以具有不同的匝数比,对于Z1和Z2可以具有不同的值以适应直到16:1的阻抗比的有理分数和整数值的变换。 在输出端加一个平衡 - 不平衡转换器可以提供平衡的输出。
    • 5. 发明公开
    • OSCILLATOR VOLTAGE REGULATOR
    • SPANNUNGSREGLERFÜROSZILLATOR
    • EP0913024A4
    • 2000-05-31
    • EP97924617
    • 1997-05-07
    • VARI L CO
    • KISER JOSEPH H
    • H02M3/335H03B5/04H03F1/08H01P1/20H03B19/06
    • H02M3/335H03F1/083Y02B70/1433
    • An oscillator voltage regulator includes a substantially constant voltage device (D1) in series with the bias network dividing resistors (R1 & R2) to reduce current flow and provide a substantially constant voltage drop, and an impedance (R3) connected between the first and second resistors of the dividing resistors (R1 & R2) and the tank circuit (T) and the base of the amplifier transistor (A) so as to reduce the loading on the tank circuit and so as to improve stability, reduce phase noise, and increase power output from the amplifier. The use of silicon PN junction (D1) and a NPN transistor (A) provides temperature compensation for hot and cold ambients to allow the oscillator to operate substantially a constant supply current (I4).
    • 振荡器电压调节器包括与偏置网络分压电阻器串联的基本上恒定的电压装置,以减少电流流动并提供基本恒定的电压降,以及连接在分压电阻器和储能电路的第一和第二电阻器之间的阻抗和 放大晶体管的基极,以减少储能电路的负载,从而提高稳定性,降低相位噪声,并增加放大器的功率输出。 使用硅PN结和NPN晶体管为热和冷环境提供温度补偿,以允许振荡器以基本上恒定的电源电流工作。