JPS6429001A - Band-pass filter - Google Patents
Band-pass filterInfo
- Publication number
- JPS6429001A JPS6429001A JP18512587A JP18512587A JPS6429001A JP S6429001 A JPS6429001 A JP S6429001A JP 18512587 A JP18512587 A JP 18512587A JP 18512587 A JP18512587 A JP 18512587A JP S6429001 A JPS6429001 A JP S6429001A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- coupled circuit
- junction point
- attenuation
- indirect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To improve a group delay time characteristic by connecting plural stages of helical resonant elements through capacity elements for interstage coupling, and providing an indirect coupled circuit for attenuation pole formation, and at the same time, providing a coupled circuit for phase compensation. CONSTITUTION:In a polarized band-pass filter, the signal of attenuation area, which is transmitted from a branch junction point P1 through a main circuit, consisting of the helical resonant elements R2-R5, and arrives at the branch junction point P6, leads in its phase by 90 deg., and the signal of the attenuation area, which reaches the junction point P6 from the junction point P1 through the indirect coupled circuit for attenuation pole formation, consisting of induction element L16, is delayed in its phase by 90 deg.. Then, because the phase difference of 180 deg. is generated between both signals, by adjusting the degree of coupling of the indirect coupled circuit for attenuation pole formation and the main circuit, the amplitudes of both signals are formed so as to be equal to each other. Next, by selecting the capacities of capacity elements C25 and C52 to form an indirect coupled circuit for phase compensation and the induction of the inductance element L25, a phase characteristic in a passing band is linearized.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18512587A JPS6429001A (en) | 1987-07-23 | 1987-07-23 | Band-pass filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18512587A JPS6429001A (en) | 1987-07-23 | 1987-07-23 | Band-pass filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6429001A true JPS6429001A (en) | 1989-01-31 |
Family
ID=16165305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18512587A Pending JPS6429001A (en) | 1987-07-23 | 1987-07-23 | Band-pass filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6429001A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008006882A (en) * | 2006-06-27 | 2008-01-17 | Toyota Motor Corp | Spherical wheel driving mechanism |
-
1987
- 1987-07-23 JP JP18512587A patent/JPS6429001A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008006882A (en) * | 2006-06-27 | 2008-01-17 | Toyota Motor Corp | Spherical wheel driving mechanism |
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