GB1262611A - Signal processing apparatus and method - Google Patents
Signal processing apparatus and methodInfo
- Publication number
- GB1262611A GB1262611A GB01381/70A GB1138170A GB1262611A GB 1262611 A GB1262611 A GB 1262611A GB 01381/70 A GB01381/70 A GB 01381/70A GB 1138170 A GB1138170 A GB 1138170A GB 1262611 A GB1262611 A GB 1262611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wave
- generator
- pulse
- transducer
- shear
- 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.)
- Expired
Links
- 101100188555 Arabidopsis thaliana OCT6 gene Proteins 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 230000003111 delayed effect Effects 0.000 abstract 1
- 230000005418 spin wave Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/30—Time-delay networks
- H03H9/40—Frequency dependent delay lines, e.g. dispersive delay lines
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
1,262,611. Electromechanical delay devices. CHU ASSOCIATES Inc. 10 March, 1970 [6 Oct., 1969], No. 11381/70. Heading H3U. A device for compressing a frequencymodulated input pulse, e.g. in "chirp" radar, comprises a single-crystal rod 1<SP>1</SP> of YIG disposed in a cylindrical hole extending through a sphere 1 of polycrystalline YIG. The optically flat end faces of the rod 1<SP>1</SP> carry, respectively, an input shear-wave electrostrictive transducer 2 and an output longitudinal-wave electrostrictive transducer 4. The sphere 1 is uniformly wound with a solenoid coil 3 energized by a ramp generator 5, the entire structure being magnetized to saturation by a permanent or electromagnet N-S. The current I supplied by generator 5 has the waveform shown to produce a substantially uniform spatial magnetic field which varies in time. The generator 5 is turned on for each successive chirp pulse applied to the transducer 2 whereby at a certain value of the generator current I the magnetic field causes conversion of the elastic shear-wave to a spin wave and then to an elastic longitudinal-wave. The high-frequency components of the input pulse are delayed in the rod 1<SP>1</SP> more than the lowfrequency components whereby a compressed pulse is generated at the output transducer 4. Moreover, since the ratio of the propagation velocities of the longitudinal waves and shear waves is about two to one, the pulse compression factor is improved by a factor of about two.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87047869A | 1969-10-06 | 1969-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1262611A true GB1262611A (en) | 1972-02-02 |
Family
ID=25355468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB01381/70A Expired GB1262611A (en) | 1969-10-06 | 1970-03-10 | Signal processing apparatus and method |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3668568A (en) |
| JP (1) | JPS4942279B1 (en) |
| BE (1) | BE747570A (en) |
| BR (1) | BR7019227D0 (en) |
| CA (1) | CA925964A (en) |
| DE (1) | DE2045502A1 (en) |
| FR (1) | FR2065851A5 (en) |
| GB (1) | GB1262611A (en) |
| IL (1) | IL33964A (en) |
| SE (1) | SE357832B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3753163A (en) * | 1971-12-27 | 1973-08-14 | Chu Associates | Electromagnetic wave-elastic wave transducer and method |
| US3753165A (en) * | 1971-12-27 | 1973-08-14 | Chu Associates | Tunable variable bandwidth magneto-elastic filter and method |
| US4096461A (en) * | 1974-08-23 | 1978-06-20 | U.S. Philips Corporation | Magnet system for tunable YIG oscillator and tunable YIG filter |
| FR2295634A1 (en) * | 1974-12-17 | 1976-07-16 | Thomson Csf | ELASTIC WAVE CONVOLUTION DEVICE |
| JPS52576U (en) * | 1975-06-16 | 1977-01-05 | ||
| JPS5399748A (en) * | 1977-02-10 | 1978-08-31 | Sony Corp | Variable delay line |
| US4758795A (en) * | 1986-07-01 | 1988-07-19 | The United States Of America As Represented By The Secretary Of The Navy | Microwave pulse compression in dispersive plasmas |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3249882A (en) * | 1962-12-17 | 1966-05-03 | Gen Electric | Spin and phonon spin traveling wave parametric amplifiers and spin wave delay lines |
| JPS5246063B1 (en) * | 1963-11-07 | 1977-11-21 | ||
| US3353118A (en) * | 1964-05-19 | 1967-11-14 | Teledyne Inc | Magnetostatic wave variable delay apparatus |
| US3444484A (en) * | 1967-04-03 | 1969-05-13 | Raytheon Co | Solid state delay line for propagation of microwave frequency energy in spin wave mode |
-
1969
- 1969-10-06 US US870478A patent/US3668568A/en not_active Expired - Lifetime
-
1970
- 1970-02-24 IL IL33964A patent/IL33964A/en unknown
- 1970-02-27 SE SE02655/70A patent/SE357832B/xx unknown
- 1970-03-10 GB GB01381/70A patent/GB1262611A/en not_active Expired
- 1970-03-10 CA CA076985A patent/CA925964A/en not_active Expired
- 1970-03-18 BE BE747570D patent/BE747570A/en unknown
- 1970-04-07 JP JP45029713A patent/JPS4942279B1/ja active Pending
- 1970-05-22 BR BR219227/70A patent/BR7019227D0/en unknown
- 1970-08-13 FR FR7029824A patent/FR2065851A5/fr not_active Expired
- 1970-09-09 DE DE19702045502 patent/DE2045502A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IL33964A0 (en) | 1970-04-20 |
| BE747570A (en) | 1970-08-31 |
| SE357832B (en) | 1973-07-09 |
| CA925964A (en) | 1973-05-08 |
| IL33964A (en) | 1973-08-29 |
| DE2045502A1 (en) | 1971-04-15 |
| BR7019227D0 (en) | 1973-03-15 |
| JPS4942279B1 (en) | 1974-11-14 |
| US3668568A (en) | 1972-06-06 |
| FR2065851A5 (en) | 1971-08-06 |
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