GB1362618A - Controllable four-terminal attenuator - Google Patents
Controllable four-terminal attenuatorInfo
- Publication number
- GB1362618A GB1362618A GB1607872A GB1607872A GB1362618A GB 1362618 A GB1362618 A GB 1362618A GB 1607872 A GB1607872 A GB 1607872A GB 1607872 A GB1607872 A GB 1607872A GB 1362618 A GB1362618 A GB 1362618A
- Authority
- GB
- United Kingdom
- Prior art keywords
- attenuator
- diodes
- arm
- series
- shunt
- 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
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/24—Frequency- independent attenuators
- H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
- H03H7/253—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a diode
Landscapes
- Electron Tubes For Measurement (AREA)
- Attenuators (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
1362618 Controllable attenuators A KATHREINSNR 7 April 1972 [6 May 1971] 16078/72 Heading H3U A four terminal attenuator comprises a bridged T network, whose shunt and by-pass arms contain respectively at least one silicon or germanium diode 1, 2, receiving, via chokes 8, 9; 10, 11, or directly, Fig. 3 (not shown), a D.C. bias voltage whose variation controls the attenuator characteristic. Resistors 3 and 4 are both of a value equal to the characteristic impedance of lines to and from the attenuator. For higher cut-off frequency, the by-pass arm may have three diodes in series (21-23), Fig. 2 (not shown), for reduced capacitance, the shunt arm having diodes (24-26) in parallel for reduced inductance. To reduce the intermodulation level, a full-wave bridge rectifier diode array may be used in each path, Fig. 3 (not shown), or each arm may contain an antiparallel configuration of a pair of diodes, each in series with a respective capacitance, Fig. 4 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712122528 DE2122528B2 (en) | 1971-05-06 | 1971-05-06 | Damping four-pole for alternating voltages, especially for high-frequency voltages |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1362618A true GB1362618A (en) | 1974-08-07 |
Family
ID=5807101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1607872A Expired GB1362618A (en) | 1971-05-06 | 1972-04-07 | Controllable four-terminal attenuator |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2122528B2 (en) |
FR (1) | FR2135656B1 (en) |
GB (1) | GB1362618A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2123653A (en) * | 1982-05-25 | 1984-02-01 | Sony Corp | Remote control apparatus |
EP1009163A1 (en) * | 1998-12-10 | 2000-06-14 | Alps Electric Co., Ltd. | Digital television signal receiving tuner |
CN112688653A (en) * | 2020-12-22 | 2021-04-20 | 成都美数科技有限公司 | Bipolar high-power adjustable attenuator |
EP4187786A1 (en) * | 2021-11-30 | 2023-05-31 | Nxp B.V. | An attenuation circuit |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5140200A (en) * | 1990-07-17 | 1992-08-18 | General Instrument Corporation | Pin diode attenuator |
US5656978A (en) * | 1995-12-11 | 1997-08-12 | Harmonic Lightwaves | Control circuit and method for direct current controlled attenuator |
FR2763763B1 (en) * | 1997-05-23 | 1999-07-30 | Trt Lucent Technologies | ELECTRONICALLY CONTROLLED VARIABLE ATTENUATOR |
-
1971
- 1971-05-06 DE DE19712122528 patent/DE2122528B2/en active Pending
-
1972
- 1972-04-07 GB GB1607872A patent/GB1362618A/en not_active Expired
- 1972-05-05 FR FR7216129A patent/FR2135656B1/fr not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2123653A (en) * | 1982-05-25 | 1984-02-01 | Sony Corp | Remote control apparatus |
EP1009163A1 (en) * | 1998-12-10 | 2000-06-14 | Alps Electric Co., Ltd. | Digital television signal receiving tuner |
CN112688653A (en) * | 2020-12-22 | 2021-04-20 | 成都美数科技有限公司 | Bipolar high-power adjustable attenuator |
CN112688653B (en) * | 2020-12-22 | 2023-03-24 | 成都美数科技有限公司 | Bipolar high-power adjustable attenuator |
EP4187786A1 (en) * | 2021-11-30 | 2023-05-31 | Nxp B.V. | An attenuation circuit |
Also Published As
Publication number | Publication date |
---|---|
DE2122528B2 (en) | 1975-07-03 |
FR2135656A1 (en) | 1972-12-22 |
DE2122528A1 (en) | 1972-11-16 |
FR2135656B1 (en) | 1973-07-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |