JPS6412624A - Adaptive impedance matching system - Google Patents
Adaptive impedance matching systemInfo
- Publication number
- JPS6412624A JPS6412624A JP16841887A JP16841887A JPS6412624A JP S6412624 A JPS6412624 A JP S6412624A JP 16841887 A JP16841887 A JP 16841887A JP 16841887 A JP16841887 A JP 16841887A JP S6412624 A JPS6412624 A JP S6412624A
- Authority
- JP
- Japan
- Prior art keywords
- matching circuit
- echo peak
- circuit
- sub
- matching
- 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 suppress as echo peak in a prescribed reference level by changing over circuits so as to connect a sub-matching circuit in parallel with a major matching circuit in adding a bridged tap to a communication line. CONSTITUTION:When the bridged tape 11 is added in the vicinity of a hybrid transfer 12, the echo peak value exceeds largely the highest level of a reference circuit 16 and the matching circuit of a main matching circuit group 19 cannot decrease the echo peak value. In detecting the state, an adaptive control circuit 17 sends a control signal to a sub selection circuit 40, which is driven to connect a sub matching circuit BNN 41 being a parallel impedance with lines l1, l2 thereby decreasing the echo peak. In this case, while the sub matching circuit BNN 41 is connected, the matching is started again from the lowest reference level to change over matching circuits BN1-BNn of the main matching circuit group 19. Thus, the echo peak is suppressed to a prescribed reference levle or below.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16841887A JPS6412624A (en) | 1987-07-06 | 1987-07-06 | Adaptive impedance matching system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16841887A JPS6412624A (en) | 1987-07-06 | 1987-07-06 | Adaptive impedance matching system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6412624A true JPS6412624A (en) | 1989-01-17 |
Family
ID=15867759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16841887A Pending JPS6412624A (en) | 1987-07-06 | 1987-07-06 | Adaptive impedance matching system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6412624A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999066683A1 (en) * | 1998-06-16 | 1999-12-23 | Rc Networks | Impedance matching interface for transmission loop |
-
1987
- 1987-07-06 JP JP16841887A patent/JPS6412624A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999066683A1 (en) * | 1998-06-16 | 1999-12-23 | Rc Networks | Impedance matching interface for transmission loop |
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