NL7211234A - - Google Patents
Info
- Publication number
- NL7211234A NL7211234A NL7211234A NL7211234A NL7211234A NL 7211234 A NL7211234 A NL 7211234A NL 7211234 A NL7211234 A NL 7211234A NL 7211234 A NL7211234 A NL 7211234A NL 7211234 A NL7211234 A NL 7211234A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/24—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube
- H03C3/245—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube by using semiconductor elements
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
- G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
- G01S13/756—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator for modifying the reflectivity of the reflector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C7/00—Modulating electromagnetic waves
- H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
- H03C7/025—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices
- H03C7/027—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices using diodes
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Amplitude Modulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7129963A FR2149283B1 (enExample) | 1971-08-17 | 1971-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7211234A true NL7211234A (enExample) | 1973-02-20 |
Family
ID=9081939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7211234A NL7211234A (enExample) | 1971-08-17 | 1972-08-17 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3824499A (enExample) |
| JP (1) | JPS4830356A (enExample) |
| DE (1) | DE2240515A1 (enExample) |
| FR (1) | FR2149283B1 (enExample) |
| GB (1) | GB1395803A (enExample) |
| NL (1) | NL7211234A (enExample) |
| SE (1) | SE377640B (enExample) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR855004A (fr) * | 1938-05-21 | 1940-04-30 | Fides | Dispositif modulateur |
| US3196370A (en) * | 1961-05-05 | 1965-07-20 | Rca Corp | Semiconductor modulators |
| US3212027A (en) * | 1961-10-20 | 1965-10-12 | Research Corp | Tunnel diode frequency modulator and transmitter system |
| US3373381A (en) * | 1964-12-18 | 1968-03-12 | Gen Electric | Transmission line phase modulator |
| US3437957A (en) * | 1966-06-28 | 1969-04-08 | Us Air Force | Microwave phase shift modulator for use with tunnel diode switching circuits |
| FR2075838A1 (enExample) * | 1969-12-16 | 1971-10-15 | Thomson Csf |
-
1971
- 1971-08-17 FR FR7129963A patent/FR2149283B1/fr not_active Expired
-
1972
- 1972-07-31 US US00276383A patent/US3824499A/en not_active Expired - Lifetime
- 1972-08-14 GB GB3790372A patent/GB1395803A/en not_active Expired
- 1972-08-16 SE SE7210640A patent/SE377640B/xx unknown
- 1972-08-17 NL NL7211234A patent/NL7211234A/xx not_active Application Discontinuation
- 1972-08-17 DE DE2240515A patent/DE2240515A1/de active Pending
- 1972-08-17 JP JP47081900A patent/JPS4830356A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1395803A (en) | 1975-05-29 |
| SE377640B (enExample) | 1975-07-14 |
| FR2149283B1 (enExample) | 1975-02-21 |
| JPS4830356A (enExample) | 1973-04-21 |
| US3824499A (en) | 1974-07-16 |
| DE2240515A1 (de) | 1973-02-22 |
| FR2149283A1 (enExample) | 1973-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BV | The patent application has lapsed |