公开(公告)号：US20070105521A1

公开(公告)日：2007-05-10

申请号：US11539569

申请日：2006-10-06

Applicant: Angelo GRANATA

Inventor： Angelo GRANATA

IPC: H04B1/10

CPC classification number: H03H7/12 ,  H03H7/1791 ,  H03H11/52 ,  H03H2011/0488 ,  H03H2210/012 ,  H03H2210/015 ,  H03H2210/025 ,  H03H2210/036 ,  H03H2210/04

Abstract: A notch filter suitable for attenuating certain frequencies of a radio-frequency signal includes an input for receiving the radio-frequency signal and an output for the output of a portion of the radio-frequency signal, first and second capacitive means, at least one inductor and a negative resistance circuit suitable for compensating the resistive losses of said at least one inductor. The inductor and the first and second capacitive means are placed to produce a resonator and the filter comprises a control device suitable for controlling the negative resistance circuit. The input impedance of the filter comprises a pole and a zero, with the pole depending on the second capacitive means and the zero depending on both the first and second capacitive means. The first and second capacitive means are variable and the control device is suitable for controlling the first and second capacitive means.

Abstract translation: 适用于衰减射频信号的某些频率的陷波滤波器包括用于接收射频信号的输入端和用于输出一部分射频信号的输出端，第一和第二电容装置，至少一个电感器 以及适于补偿所述至少一个电感器的电阻损耗的负电阻电路。 电感器和第一和第二电容性装置被放置以产生谐振器，并且滤波器包括适于控制负电阻电路的控制装置。 滤波器的输入阻抗包括极点和零点，其极点取决于第二电容装置，而零值取决于第一和第二电容装置。 第一和第二电容装置是可变的，并且控制装置适于控制第一和第二电容装置。

公开(公告)号：US20100201438A1

公开(公告)日：2010-08-12

申请号：US12762203

申请日：2010-04-16

Applicant: Angelo GRANATA

Inventor： Angelo GRANATA

IPC: H03K5/00

CPC classification number: H03H7/12 ,  H03H7/1791 ,  H03H11/52 ,  H03H2011/0488 ,  H03H2210/012 ,  H03H2210/015 ,  H03H2210/025 ,  H03H2210/036 ,  H03H2210/04

Abstract: A notch filter suitable for attenuating certain frequencies of a radio-frequency signal includes an input for receiving the radio-frequency signal and an output for the output of a portion of the radio-frequency signal, first and second capacitive means, at least one inductor and a negative resistance circuit suitable for compensating the resistive losses of said at least one inductor. The inductor and the first and second capacitive means are placed to produce a resonator and the filter comprises a control device suitable for controlling the negative resistance circuit. The input impedance of the filter comprises a pole and a zero, with the pole depending on the second capacitive means and the zero depending on both the first and second capacitive means. The first and second capacitive means are variable and the control device is suitable for controlling the first and second capacitive means.

Abstract translation: 适用于衰减射频信号的某些频率的陷波滤波器包括用于接收射频信号的输入端和用于输出一部分射频信号的输出端，第一和第二电容装置，至少一个电感器 以及适于补偿所述至少一个电感器的电阻损耗的负电阻电路。 电感器和第一和第二电容性装置被放置以产生谐振器，并且滤波器包括适于控制负电阻电路的控制装置。 滤波器的输入阻抗包括极点和零点，其极点取决于第二电容装置，而零值取决于第一和第二电容装置。 第一和第二电容装置是可变的，并且控制装置适于控制第一和第二电容装置。