CA2258447A1 - Oscillator circuit - Google Patents
Oscillator circuitInfo
- Publication number
- CA2258447A1 CA2258447A1 CA002258447A CA2258447A CA2258447A1 CA 2258447 A1 CA2258447 A1 CA 2258447A1 CA 002258447 A CA002258447 A CA 002258447A CA 2258447 A CA2258447 A CA 2258447A CA 2258447 A1 CA2258447 A1 CA 2258447A1
- Authority
- CA
- Canada
- Prior art keywords
- voltage controlled
- controlled oscillator
- frequency signal
- oscillator
- signal
- 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.)
- Granted
Links
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Superheterodyne Receivers (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
A stabilised voltage controlled oscillator circuit comprises a closed loop circuit containing a voltage controlled oscillator, a local oscillator and a harmonic mixer that mixes a stabilised local oscillator frequency signal and a radio frequency signal from the voltage controlled oscillator to obtain an intermediate frequency signal. An IF amplifier is connected to a linear frequency discriminator that provides an output signal to a summing amplifier, which is connected to the voltage controlled oscillator. The closed loop circuit uses the linear frequency discriminator to provide a feedback signal that stabilises the voltage controlled oscillator.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9412772A GB2291551B (en) | 1994-06-24 | 1994-06-24 | Electronic viewing aid |
GB9412772.7 | 1994-06-24 | ||
CA002192937A CA2192937C (en) | 1994-06-24 | 1995-04-05 | Electronic viewing aid |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002192937A Division CA2192937C (en) | 1994-06-24 | 1995-04-05 | Electronic viewing aid |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2258447A1 true CA2258447A1 (en) | 1996-01-04 |
CA2258447C CA2258447C (en) | 2003-02-04 |
Family
ID=25678924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002258447A Expired - Fee Related CA2258447C (en) | 1994-06-24 | 1995-04-05 | Oscillator circuit |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2258447C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023034212A1 (en) * | 2021-08-30 | 2023-03-09 | Meta Platforms Technologies, Llc | Tunable transparent antennas implemented on lenses of augmented-reality devices |
-
1995
- 1995-04-05 CA CA002258447A patent/CA2258447C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023034212A1 (en) * | 2021-08-30 | 2023-03-09 | Meta Platforms Technologies, Llc | Tunable transparent antennas implemented on lenses of augmented-reality devices |
Also Published As
Publication number | Publication date |
---|---|
CA2258447C (en) | 2003-02-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |