JPS6483174A - Detecting device of phase - Google Patents
Detecting device of phaseInfo
- Publication number
- JPS6483174A JPS6483174A JP62241053A JP24105387A JPS6483174A JP S6483174 A JPS6483174 A JP S6483174A JP 62241053 A JP62241053 A JP 62241053A JP 24105387 A JP24105387 A JP 24105387A JP S6483174 A JPS6483174 A JP S6483174A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- signal
- pilot signal
- imbalance
- amplitude
- 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
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
PURPOSE:To obtain a detecting device keeping a highly precise amplitude balance automatically, by providing a phase detector, a local oscillator, a phase shifter, an A/D converter, a divider, a hole circuit, a multiplier, etc. CONSTITUTION:A phase detector 1 subjects an input IF signal to phase comparison with a reference signal output of a local oscilator 2 and detects and outputs two orthogonal components. The phase shifter 3 shifts the phase of the reference signal output of the oscillator 2 at every pi/4m (m is an integer) according to a phase switching signal and generates a pilot signal for detecting imbalance of amplitude. A/D converters 4a and 4b quantize detection outputs of the detector 1. A delay circuit 5 delays a cos component by a time in which the phase of the pilot signal changes at pi/2, and a divider 6 divides the cos component by a sin component for detecting the imbalance of the amplitude. A hold circuit 7 holds an input value except for a period in which the pilot signal is injected, and a multiplier 8 multiplies the imbalance by the sin component to correct the same. Besides, a switch 9 switches over the input signal and the pilot signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62241053A JPS6483174A (en) | 1987-09-26 | 1987-09-26 | Detecting device of phase |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62241053A JPS6483174A (en) | 1987-09-26 | 1987-09-26 | Detecting device of phase |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6483174A true JPS6483174A (en) | 1989-03-28 |
Family
ID=17068608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62241053A Pending JPS6483174A (en) | 1987-09-26 | 1987-09-26 | Detecting device of phase |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6483174A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03248072A (en) * | 1990-02-26 | 1991-11-06 | Mitsubishi Electric Corp | Radar apparatus |
JPH04269683A (en) * | 1990-12-10 | 1992-09-25 | Hughes Aircraft Co | System and method of compensation for nonuniformity of gain for same phase and phase of quadrature |
CN109477890A (en) * | 2016-08-05 | 2019-03-15 | 德克萨斯仪器股份有限公司 | Fault detection in radar system |
-
1987
- 1987-09-26 JP JP62241053A patent/JPS6483174A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03248072A (en) * | 1990-02-26 | 1991-11-06 | Mitsubishi Electric Corp | Radar apparatus |
JPH04269683A (en) * | 1990-12-10 | 1992-09-25 | Hughes Aircraft Co | System and method of compensation for nonuniformity of gain for same phase and phase of quadrature |
CN109477890A (en) * | 2016-08-05 | 2019-03-15 | 德克萨斯仪器股份有限公司 | Fault detection in radar system |
JP2019527831A (en) * | 2016-08-05 | 2019-10-03 | 日本テキサス・インスツルメンツ合同会社 | Defect detection in radar systems |
US11460543B2 (en) | 2016-08-05 | 2022-10-04 | Texas Instruments Incorporated | Failure detection in a radar system |
CN109477890B (en) * | 2016-08-05 | 2023-08-08 | 德克萨斯仪器股份有限公司 | Fault detection in radar systems |
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