TW241412B - Apparatus and method for quadrature signal generation - Google Patents
Apparatus and method for quadrature signal generationInfo
- Publication number
- TW241412B TW241412B TW83108412A TW83108412A TW241412B TW 241412 B TW241412 B TW 241412B TW 83108412 A TW83108412 A TW 83108412A TW 83108412 A TW83108412 A TW 83108412A TW 241412 B TW241412 B TW 241412B
- Authority
- TW
- Taiwan
- Prior art keywords
- resistor
- capacitor
- middle point
- input port
- circuit
- Prior art date
Links
Landscapes
- Networks Using Active Elements (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
A phase shifting circuit, which can generate multiple output signals among which there are constant phase difference, includes: 1. one first input port to receive one input signal with reference phase; 2. one second input port to receive one input signal with 180 degree phase difference to reference phase; 3. one first circuit connected with the first input port and the second input port, which includes one first set of resistor-capacitor(RC) connected in series with the second set of resistor-capacitor(RC) through one middle point, in which the second set of resistor-capacitor symmetrizes to the first set of resistor-capacitor by the middle point; 4. one second circuit connected with the first input port and the second input port, and parallel with the first circuit, in which the second circuit in cludes one first set of resistor connected in series with the second set of resistor through the second middle point, in which the second set of resistor symmetrizes to the first set of resistor by the second middle point; 5. at least two output ports connected with the first set of resistor-capacitor and the second set of resistor-capacitor separately, in which there is constant phase difference between output ports; 6. the first middle point connected with the second middle point to generate one virtual ground level which has a definite voltage relationship with the input signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW83108412A TW241412B (en) | 1994-09-09 | 1994-09-09 | Apparatus and method for quadrature signal generation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW83108412A TW241412B (en) | 1994-09-09 | 1994-09-09 | Apparatus and method for quadrature signal generation |
Publications (1)
Publication Number | Publication Date |
---|---|
TW241412B true TW241412B (en) | 1995-02-21 |
Family
ID=51400931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW83108412A TW241412B (en) | 1994-09-09 | 1994-09-09 | Apparatus and method for quadrature signal generation |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW241412B (en) |
-
1994
- 1994-09-09 TW TW83108412A patent/TW241412B/en active
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