JPS5453891A - Low power type doppler radar - Google Patents
Low power type doppler radarInfo
- Publication number
- JPS5453891A JPS5453891A JP11993577A JP11993577A JPS5453891A JP S5453891 A JPS5453891 A JP S5453891A JP 11993577 A JP11993577 A JP 11993577A JP 11993577 A JP11993577 A JP 11993577A JP S5453891 A JPS5453891 A JP S5453891A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- variable resistor
- doppler radar
- output
- low power
- 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
- 230000035945 sensitivity Effects 0.000 abstract 2
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
- G01S7/032—Constructional details for solid-state radar subsystems
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To realize a low power type Doppler radar with high sensitivity to satisfy the without-permit using conditions, by obtaining very small output power by effectively using a balanced mixer circuit composed of 4-terminal 3 dB hybrid circuits. CONSTITUTION:In a Doppler radar composed of oscillating part, balanced mixer part, and antenna part, the balanced mixer circuit is made up 4-terminal 3 dB hybrid circuits such as rat race circuits, When a high frequency power is applied to terminal P2, a slight output is created at terminal P4 due to the difference in the reflection volume between teminals P1 and P3. At this time, the one end of mixer diodes 37, 38 is connected to resistor R1 and variable resistor VR1, and another variable resistor VR2 is connected between said two resistors, so that the Doppler output may be taken out from the middle of variable resistr VR2. In this structure, by adjusting the variable resistor VR1, the difference in the reflection volume may be canceled, so that the high frequency output may be changed from 0 to severel milliwatts. Also, by adjusting the variable resistor VR2, the S/N may be increased, so that the sensitivity may be enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11993577A JPS5453891A (en) | 1977-10-07 | 1977-10-07 | Low power type doppler radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11993577A JPS5453891A (en) | 1977-10-07 | 1977-10-07 | Low power type doppler radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5453891A true JPS5453891A (en) | 1979-04-27 |
Family
ID=14773800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11993577A Pending JPS5453891A (en) | 1977-10-07 | 1977-10-07 | Low power type doppler radar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5453891A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997002496A1 (en) * | 1995-07-01 | 1997-01-23 | Robert Bosch Gmbh | Monostatic fmcw radar sensor |
| JP2017198474A (en) * | 2016-04-25 | 2017-11-02 | 株式会社ヨコオ | Pulse radar device and component of the same |
-
1977
- 1977-10-07 JP JP11993577A patent/JPS5453891A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997002496A1 (en) * | 1995-07-01 | 1997-01-23 | Robert Bosch Gmbh | Monostatic fmcw radar sensor |
| US6037894A (en) * | 1995-07-01 | 2000-03-14 | Robert Bosch Gmbh | Monostatic FMCW radar sensor |
| JP2017198474A (en) * | 2016-04-25 | 2017-11-02 | 株式会社ヨコオ | Pulse radar device and component of the same |
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