NL275870A - - Google Patents
Info
- Publication number
- NL275870A NL275870A NL275870DA NL275870A NL 275870 A NL275870 A NL 275870A NL 275870D A NL275870D A NL 275870DA NL 275870 A NL275870 A NL 275870A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F7/00—Parametric amplifiers
- H03F7/04—Parametric amplifiers using variable-capacitance element; using variable-permittivity element
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
- H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F7/00—Parametric amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Amplifiers (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US96491A US3183456A (en) | 1961-03-17 | 1961-03-17 | Frequency modulation apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
NL275870A true NL275870A (xx) |
Family
ID=22257582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL275870D NL275870A (xx) | 1961-03-17 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3183456A (xx) |
BE (1) | BE615032A (xx) |
DE (1) | DE1218556B (xx) |
GB (1) | GB970891A (xx) |
NL (1) | NL275870A (xx) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3335373A (en) * | 1964-07-20 | 1967-08-08 | Gen Telephone & Elect | Apparatus for modulating guided electromagnetic waves |
US3422355A (en) * | 1965-04-22 | 1969-01-14 | Sylvania Electric Prod | Parametric frequency converter for transmitting antenna |
US3443247A (en) * | 1966-03-31 | 1969-05-06 | Sylvania Electric Prod | Varactor modulator having a linear tuning voltage vs. frequency response |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE473522A (xx) * | 1946-05-28 | |||
NL224219A (xx) * | 1957-01-26 | |||
US3018443A (en) * | 1958-05-20 | 1962-01-23 | Rca Corp | Parameric amplifier with lower frequency pumping |
US2992398A (en) * | 1959-01-15 | 1961-07-11 | Rca Corp | Parametric oscillator phase switching means |
US3001143A (en) * | 1959-02-04 | 1961-09-19 | Avco Mfg Corp | Low noise radio frequency amplifier |
US2970275A (en) * | 1959-05-05 | 1961-01-31 | Rca Corp | Parametric amplifier device |
-
0
- NL NL275870D patent/NL275870A/xx unknown
-
1961
- 1961-03-17 US US96491A patent/US3183456A/en not_active Expired - Lifetime
-
1962
- 1962-03-01 DE DEW31766A patent/DE1218556B/de active Pending
- 1962-03-13 BE BE615032A patent/BE615032A/fr unknown
- 1962-03-13 GB GB9511/62A patent/GB970891A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB970891A (en) | 1964-09-23 |
US3183456A (en) | 1965-05-11 |
DE1218556B (de) | 1966-06-08 |
BE615032A (fr) | 1962-07-02 |