GB1512953A - Matching circuits - Google Patents
Matching circuitsInfo
- Publication number
- GB1512953A GB1512953A GB3371174A GB3371174A GB1512953A GB 1512953 A GB1512953 A GB 1512953A GB 3371174 A GB3371174 A GB 3371174A GB 3371174 A GB3371174 A GB 3371174A GB 1512953 A GB1512953 A GB 1512953A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- load
- gain
- amplifiers
- resistors
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/28—Impedance matching networks
- H03H11/30—Automatic matching of source impedance to load impedance
Landscapes
- Amplifiers (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
1512953 Matching circuits MARCONI INSTRUMENTS Ltd 8 July 1975 [31 July 1974] 33711/74 Headings H3Q and H3W In a signal generator comprising a variable gain amplifier 12, Fig. 3, feeding a load at 18, the voltages at either end of a resistor 20 in series between the amplifier and load are measured and combined in a predetermined proportion to provide a control signal for the amplifier 12 which keeps the amplifier matched to the load and the power dissipated in the load constant. As described the voltages are measured by detector diodes 11, 13, Fig. 4, rectifying positive and negative half cycles respectively. The rectified signals are applied to amplifiers 43 and 44 having a gain set by resistors 51, 52 and a unity gain respectively, the outputs of the amplifiers being summed through resistors 53, 54 to provide a signal which after comparison with a reference level is used to control the gain of amplifier 12. Choke 55 removes any D.C. offset.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3371174A GB1512953A (en) | 1974-07-31 | 1974-07-31 | Matching circuits |
DE19742456640 DE2456640C3 (en) | 1974-07-31 | 1974-11-29 | Circuit for adapting the internal resistance of a generator to a load resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3371174A GB1512953A (en) | 1974-07-31 | 1974-07-31 | Matching circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1512953A true GB1512953A (en) | 1978-06-01 |
Family
ID=10356476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3371174A Expired GB1512953A (en) | 1974-07-31 | 1974-07-31 | Matching circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1512953A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4492926A (en) * | 1980-08-14 | 1985-01-08 | Tokyo Shibaura Denki Kabushiki Kaisha | Amplitude modulation detector |
-
1974
- 1974-07-31 GB GB3371174A patent/GB1512953A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4492926A (en) * | 1980-08-14 | 1985-01-08 | Tokyo Shibaura Denki Kabushiki Kaisha | Amplitude modulation detector |
Also Published As
Publication number | Publication date |
---|---|
DE2456640A1 (en) | 1976-02-12 |
DE2456640B2 (en) | 1976-08-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |