公开(公告)号：EP0896743A4

公开(公告)日：2000-06-14

申请号：EP97925422

申请日：1997-04-29

申请人： RAYTHEON E SYSTEMS INC

发明人： VON STEIN OFRIA M

IPC分类号： H01P5/02 ,  H01P5/08 ,  H03B19/14 ,  H03B19/18 ,  H01P1/20 ,  H03B19/06

CPC分类号： H03B19/14

摘要： An odd order MESFET frequency multiplier which outputs a desired odd harmonic of a fundamental tone. The frequency multiplier (100) includes a multiplier stage with a MESFET (16) having a harmonic response dependent upon a plurality of bias conditions (24, 26) and the input power level (28). The MESFET (16) includes a drain port (32) coupled to an output matching network (30) sized and configured for a predetermined load (27) at a selected output frequency. The output matching network (30) includes RF shorts (40, 42) for reflecting energy to the MESFET (16) from a plurality of undesired even harmonics. Coupled to the output matching circuit (30) is a bandpass filter (36) sized and configured for the predetermined load (27). The bandpass filter (36) includes RF shorts for reflecting energy to the MESFET (16) from a plurality of undesired odd harmonics, wherein the reflected energy from the undesired even harmonics and the undesired odd harmonics are combined at the MESFET (16) to provide additional energy at the desired odd harmonic.

公开(公告)号：EP0913024A4

公开(公告)日：2000-05-31

申请号：EP97924617

申请日：1997-05-07

申请人： VARI L CO

发明人： KISER JOSEPH H

IPC分类号： H02M3/335 ,  H03B5/04 ,  H03F1/08 ,  H01P1/20 ,  H03B19/06

CPC分类号： H02M3/335 ,  H03F1/083 ,  Y02B70/1433

摘要： 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).

摘要翻译： 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。