GB1413486A - Oscillators including piezo electric surface wave delay devices - Google Patents
Oscillators including piezo electric surface wave delay devicesInfo
- Publication number
- GB1413486A GB1413486A GB1924972A GB1924972A GB1413486A GB 1413486 A GB1413486 A GB 1413486A GB 1924972 A GB1924972 A GB 1924972A GB 1924972 A GB1924972 A GB 1924972A GB 1413486 A GB1413486 A GB 1413486A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inductors
- transducers
- surface wave
- plate
- line
- 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
- 239000010409 thin film Substances 0.000 abstract 2
- 238000010894 electron beam technology Methods 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 230000010363 phase shift Effects 0.000 abstract 1
- 239000000758 substrate Substances 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
- H03H9/02—Details
- H03H9/05—Holders or supports
- H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
- H03H9/0542—Constructional combinations of supports or holders with electromechanical or other electronic elements consisting of a lateral arrangement
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/326—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
1413486 Oscillators; frequency changers; delay lines MARCONI CO Ltd 29 Dec 1972 [26 April 1972] 19249/72 Headings H3F and H3U To alter the phase transfer characteristic of a surface wave delay line used in the feedback path of an amplifier to form an oscillator, and hence to vary the oscillator frequency, there is provided, either a thin film gold strip plate 4, Fig. 4, between input and output transducers 6, 7, on piezo substrate 5, of the line, or one, or two as shown, thin film spiral inductors 8, 9, Fig. 5 in series with an electrode of the transducers 6, 7. The phase transfer is adjusted by adjusting the width W of plate 4 by laser, electron beam or mechanical machining, the plate altering the wave velocity under it. Inductors, 8, 9 are adjusted by shorting out parts of turns using a wire bonding machine. The handpass characteristic of the line is displayed in Fig. 2 (not shown). Typical operating frequencies, inductance values, and phase shifts are given. Inductors 8, 9 are formed together with the transducers photolithographically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1924972A GB1413486A (en) | 1972-04-26 | 1972-04-26 | Oscillators including piezo electric surface wave delay devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1924972A GB1413486A (en) | 1972-04-26 | 1972-04-26 | Oscillators including piezo electric surface wave delay devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1413486A true GB1413486A (en) | 1975-11-12 |
Family
ID=10126217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1924972A Expired GB1413486A (en) | 1972-04-26 | 1972-04-26 | Oscillators including piezo electric surface wave delay devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1413486A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2126034A (en) * | 1982-07-02 | 1984-03-14 | Clarion Co Ltd | Surface acoustic wave device |
| GB2165411A (en) * | 1984-10-09 | 1986-04-09 | X Cyte Inc | Surface acoustic wave passive transponder having amplitude and phase-modifying surface pads |
| US5986382A (en) | 1997-08-18 | 1999-11-16 | X-Cyte, Inc. | Surface acoustic wave transponder configuration |
| US6060815A (en) | 1997-08-18 | 2000-05-09 | X-Cyte, Inc. | Frequency mixing passive transponder |
| US6208062B1 (en) | 1997-08-18 | 2001-03-27 | X-Cyte, Inc. | Surface acoustic wave transponder configuration |
-
1972
- 1972-04-26 GB GB1924972A patent/GB1413486A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2126034A (en) * | 1982-07-02 | 1984-03-14 | Clarion Co Ltd | Surface acoustic wave device |
| GB2165411A (en) * | 1984-10-09 | 1986-04-09 | X Cyte Inc | Surface acoustic wave passive transponder having amplitude and phase-modifying surface pads |
| US5986382A (en) | 1997-08-18 | 1999-11-16 | X-Cyte, Inc. | Surface acoustic wave transponder configuration |
| US6060815A (en) | 1997-08-18 | 2000-05-09 | X-Cyte, Inc. | Frequency mixing passive transponder |
| US6208062B1 (en) | 1997-08-18 | 2001-03-27 | X-Cyte, Inc. | Surface acoustic wave transponder configuration |
| US6611224B1 (en) | 1997-08-18 | 2003-08-26 | X-Cyte, Inc. | Backscatter transponder interrogation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |