GB842194A - Improvements in or relating to electro-mechanical high frequency filters - Google Patents

Improvements in or relating to electro-mechanical high frequency filters

Info

Publication number
GB842194A
GB842194A GB7407/58A GB740758A GB842194A GB 842194 A GB842194 A GB 842194A GB 7407/58 A GB7407/58 A GB 7407/58A GB 740758 A GB740758 A GB 740758A GB 842194 A GB842194 A GB 842194A
Authority
GB
United Kingdom
Prior art keywords
resonators
coupled
high frequency
resonator
march
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
GB7407/58A
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Publication of GB842194A publication Critical patent/GB842194A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/48—Coupling means therefor
    • H03H9/50—Mechanical coupling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
    • B62J6/01—Electric circuits
    • B62J6/015—Electric circuits using electrical power not supplied by the cycle motor generator, e.g. using batteries or piezo elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

842,194. Electromechanical filters. TELEFUNKEN G.m.b.H. March 7, 1958 [March 20, 1957], No. 7407/58. Class 40(8). An electromechanical high frequency filter comprises a plurality of parallel mechanical resonators adapted to vibrate resonantly in the longitudinal mode, which are coupled by mechanical lines extending perpendicularly to the direction of the longitudinal axes of the resonators. Cylindrical metal resonators 1, 2 and 3 vibrate as shown and are coupled by wires 4, 5, 6, 7 which bend and transfer the vibrations from resonator to resonator. Input and output ferrite transducers 8 and 9 are coupled to the filter by longitudinally vibrating couplers 14, 15. In other embodiments of the invention (not shown) the transverse couplers are attached to various parts of the resonators to vary the coupling and the resonators may be formed with hemi-spherical ends to reduce the production of spurious frequencies.
GB7407/58A 1957-03-20 1958-03-07 Improvements in or relating to electro-mechanical high frequency filters Expired GB842194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE355872X 1957-03-20

Publications (1)

Publication Number Publication Date
GB842194A true GB842194A (en) 1960-07-20

Family

ID=6290125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7407/58A Expired GB842194A (en) 1957-03-20 1958-03-07 Improvements in or relating to electro-mechanical high frequency filters

Country Status (6)

Country Link
US (1) US2969511A (en)
CH (1) CH355872A (en)
DE (1) DE1252817B (en)
FR (1) FR1191701A (en)
GB (1) GB842194A (en)
NL (1) NL113896C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1214811B (en) * 1963-01-18 1966-04-21 Telefunken Patent Mechanical resonance filter
US3874041A (en) * 1972-06-13 1975-04-01 Dzus Fastener Co Fasteners
JPS5429726Y2 (en) * 1973-02-12 1979-09-20
US3931600A (en) * 1973-06-11 1976-01-06 Kokusai Electric Co., Ltd. Mechanical filter
JPS5091438U (en) * 1973-12-21 1975-08-01
FR2360212A1 (en) * 1976-07-26 1978-02-24 Lignes Telegraph Telephon Electromechanical filter element coupling - includes quarter wave quartz elements to reduce parasitic resonance outside passband by eight five db
JPS54109355A (en) * 1978-02-15 1979-08-27 Fujitsu Ltd Mechanical filter
US7530322B2 (en) * 2006-06-24 2009-05-12 Angelini Joseph A Boat foldable into a compact self-contained shape

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1788519A (en) * 1926-05-26 1931-01-13 Western Electric Co Mechanical transmission system
US1933306A (en) * 1931-04-30 1933-10-31 Gen Electric Electrical frequency analyzer
US2318417A (en) * 1942-06-02 1943-05-04 Gen Electric Artificial reverberation system
US2615981A (en) * 1949-01-14 1952-10-28 Collins Radio Co Electromechanical filter
US2738467A (en) * 1953-03-12 1956-03-13 Rca Corp Mechanical resonator coupling utilizing poisson's effect
US2799832A (en) * 1953-09-11 1957-07-16 Motoroln Inc Electromechanical filter
US2814785A (en) * 1955-07-29 1957-11-26 Rca Corp Electromechanical filter
US2829350A (en) * 1955-08-16 1958-04-01 Collins Radio Co Mechanical filter with coupling wires
US2856588A (en) * 1956-03-01 1958-10-14 Rca Corp Mechanical filter

Also Published As

Publication number Publication date
FR1191701A (en) 1959-10-21
CH355872A (en) 1961-07-31
DE1252817B (en)
US2969511A (en) 1961-01-24
NL113896C (en)

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