GB2193400B - Improvements in and relating to attenuators - Google Patents

Improvements in and relating to attenuators

Info

Publication number
GB2193400B
GB2193400B GB8610534A GB8610534A GB2193400B GB 2193400 B GB2193400 B GB 2193400B GB 8610534 A GB8610534 A GB 8610534A GB 8610534 A GB8610534 A GB 8610534A GB 2193400 B GB2193400 B GB 2193400B
Authority
GB
United Kingdom
Prior art keywords
attenuators
relating
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 - Fee Related
Application number
GB8610534A
Other versions
GB8610534D0 (en
GB2193400A (en
Inventor
Roderick Leonard Walla Stevens
John Richard Cobden Snow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8610534A priority Critical patent/GB2193400B/en
Publication of GB8610534D0 publication Critical patent/GB8610534D0/en
Publication of GB2193400A publication Critical patent/GB2193400A/en
Application granted granted Critical
Publication of GB2193400B publication Critical patent/GB2193400B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
GB8610534A 1986-04-30 1986-04-30 Improvements in and relating to attenuators Expired - Fee Related GB2193400B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8610534A GB2193400B (en) 1986-04-30 1986-04-30 Improvements in and relating to attenuators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8610534A GB2193400B (en) 1986-04-30 1986-04-30 Improvements in and relating to attenuators

Publications (3)

Publication Number Publication Date
GB8610534D0 GB8610534D0 (en) 1986-06-04
GB2193400A GB2193400A (en) 1988-02-03
GB2193400B true GB2193400B (en) 1990-01-31

Family

ID=10597090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8610534A Expired - Fee Related GB2193400B (en) 1986-04-30 1986-04-30 Improvements in and relating to attenuators

Country Status (1)

Country Link
GB (1) GB2193400B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB288371A (en) * 1927-01-07 1928-04-10 Gaston Adelin Mathieu Improvements in or relating to automatic current limiting and regulating devices, for use in electrical signalling
GB1143355A (en) * 1965-10-23 1969-02-19 Adage Inc Hybrid computer
GB1161238A (en) * 1965-10-24 1969-08-13 Texas Instruments Inc Gain Control Circuit.
GB1515904A (en) * 1975-09-11 1978-06-28 Orange Musical Ind Ltd Digitally controlled amplifying equipment
GB2070358A (en) * 1980-02-25 1981-09-03 Sharp Kk Digital volume control
GB2129636A (en) * 1982-10-27 1984-05-16 Tektronix Inc Programmable attenuator
EP0210783A2 (en) * 1985-07-23 1987-02-04 Hewlett-Packard Company Pin diode switched RF step attenuator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB288371A (en) * 1927-01-07 1928-04-10 Gaston Adelin Mathieu Improvements in or relating to automatic current limiting and regulating devices, for use in electrical signalling
GB1143355A (en) * 1965-10-23 1969-02-19 Adage Inc Hybrid computer
GB1161238A (en) * 1965-10-24 1969-08-13 Texas Instruments Inc Gain Control Circuit.
GB1515904A (en) * 1975-09-11 1978-06-28 Orange Musical Ind Ltd Digitally controlled amplifying equipment
GB2070358A (en) * 1980-02-25 1981-09-03 Sharp Kk Digital volume control
GB2129636A (en) * 1982-10-27 1984-05-16 Tektronix Inc Programmable attenuator
EP0210783A2 (en) * 1985-07-23 1987-02-04 Hewlett-Packard Company Pin diode switched RF step attenuator

Also Published As

Publication number Publication date
GB8610534D0 (en) 1986-06-04
GB2193400A (en) 1988-02-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930430