GB1355098A - Rejection filter circuit - Google Patents

Rejection filter circuit

Info

Publication number
GB1355098A
GB1355098A GB3869771A GB3869771A GB1355098A GB 1355098 A GB1355098 A GB 1355098A GB 3869771 A GB3869771 A GB 3869771A GB 3869771 A GB3869771 A GB 3869771A GB 1355098 A GB1355098 A GB 1355098A
Authority
GB
United Kingdom
Prior art keywords
line
capacitances
series
resonant
section
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
Application number
GB3869771A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1355098A publication Critical patent/GB1355098A/en
Expired 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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775—Parallel LC in shunt or branch path
    • 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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • 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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0123—Frequency selective two-port networks comprising distributed impedance elements together with lumped impedance elements
    • 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
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1791—Combined LC in shunt or branch path

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Cosmetics (AREA)

Abstract

1355098 Rejection filters A KATHREIN SNR 18 Aug 1971 [21 Aug 1970] 38697/71 Heading H1W A high-frequency band rejection filter comprises a transmission line element extending between input and output 11, 11<SP>1</SP>, two (or more) shunt elements 12, 13 series resonant at the rejection frequency or frequencies, and at least one quarter-wavelength (nominally) transforming section 14 electrically equivalent to a T-section filter for matching the impedances of the shunts to that of the line. The conditions for matching are discussed in the Specification. The shunt circuits may consist of resonant lines K1, K3, off-tuned inductively, in series with respective capacitances C1, C4. Each may be realized by a resonator 31, 32, Fig. 8, of, e.g. coaxial or printed-circuit construction, coupled by stray capacitance (providing C1, C4) to the uninterrupted line conductor 34. The transforming section similarly includes an inductively offtuned resonant section K2 and series capacitances C2, C3. This is realized in the manner shown in Fig. 7 where the resonator 24 is coupled to the interrupted line 25, 26 by capacitances between the inner conductor 29 and electrodes 27, 28 attached to the line. The resonators may be capacitatively tuned and the capacitances C1, C2, C3, C4 may be adjusted by moving slugs or electrodes attached to the transmission line. A modification is referred to (Fig. 2, not shown) in which all the reactances are reversed in sign.
GB3869771A 1970-08-21 1971-08-18 Rejection filter circuit Expired GB1355098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702041668 DE2041668B2 (en) 1970-08-21 1970-08-21 LOCK FILTER

Publications (1)

Publication Number Publication Date
GB1355098A true GB1355098A (en) 1974-06-05

Family

ID=5780421

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3869771A Expired GB1355098A (en) 1970-08-21 1971-08-18 Rejection filter circuit

Country Status (3)

Country Link
DE (1) DE2041668B2 (en)
FR (1) FR2104616A5 (en)
GB (1) GB1355098A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952664A1 (en) * 1998-04-20 1999-10-27 The Whitaker Corporation Sub-harmonic modulator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4018219A1 (en) * 1990-06-07 1991-12-19 Ant Nachrichtentech Microwave filter with coaxial resonator - has metallised face on dielectric for coupling two resonators, separated by outer wall(s)
DE19509644A1 (en) * 1995-03-17 1996-09-19 Thomson Brandt Gmbh Filter circuit
FR3130826A1 (en) 2021-12-21 2023-06-23 Totalenergies Marketing Services Method for purifying at least partly re-refined lubricating oils

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952664A1 (en) * 1998-04-20 1999-10-27 The Whitaker Corporation Sub-harmonic modulator

Also Published As

Publication number Publication date
FR2104616A5 (en) 1972-04-14
DE2041668B2 (en) 1972-11-02
DE2041668A1 (en) 1972-05-31

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees