GB1021915A – A frequency switching device
– Google Patents
GB1021915A – A frequency switching device
– Google Patents
A frequency switching device
Info
Publication number
GB1021915A
GB1021915A
GB35294/63A
GB3529463A
GB1021915A
GB 1021915 A
GB1021915 A
GB 1021915A
GB 35294/63 A
GB35294/63 A
GB 35294/63A
GB 3529463 A
GB3529463 A
GB 3529463A
GB 1021915 A
GB1021915 A
GB 1021915A
Authority
GB
United Kingdom
Prior art keywords
sources
terminal
power supply
toggles
sept
Prior art date
1962-09-11
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
GB35294/63A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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.)
1962-09-11
Filing date
1963-09-06
Publication date
1966-03-09
1963-09-06
Application filed by Standard Telephone and Cables PLC
filed
Critical
Standard Telephone and Cables PLC
1966-03-09
Publication of GB1021915A
publication
Critical
patent/GB1021915A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 – H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
H04B1/40—Circuits
H04B1/50—Circuits using different frequencies for the two directions of communication
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator
H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator active element in amplifier being semiconductor device
H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
H03K17/6257—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several inputs only combined with selecting means
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
H03K17/6285—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several outputs only combined with selecting means
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
H03K19/16—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using saturable magnetic devices
H03K19/162—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using saturable magnetic devices using parametrons
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
H03B2200/003—Circuit elements of oscillators
H03B2200/0046—Circuit elements of oscillators including measures to switch the gain of an amplifier
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
H03B2200/003—Circuit elements of oscillators
H03B2200/0048—Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
H03B2201/02—Varying the frequency of the oscillations by electronic means
H03B2201/025—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements
H03B2201/0258—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements the means comprising a diode
Abstract
1,021,915. Selective signalling. STANDARD TELEPHONES & CABLES Ltd. Sept. 6, 1963 [Sept. 11, 1963], No. 35294/63. Heading G4H. [Also in Division H4] A frequency-selecting system comprises a plurality of separate sources of oscillations of different radio-frequencies, means connecting the outputs of the sources in parallel to a common output terminal, a power supply for the sources, and an electronic switching device for selectively connecting the power supply to a selected one of the sources. The arrangement is stated to be for use in frequency switching equipment for mobile radio communication systems. In one arrangement, Fig. 1, transistor oscillators 1, 11, 51 have their output circuits from voltage dividers 4 and 5, 14 and 15, and 54 and 55 connected in parallel and to the input of an amplifier 61; an electronic switch 71 ‘connecting the power supply 81 to a selected one of the oscillators 1, 11, 51 in accordance with a predetermined signal applied to the terminal 72. The device 71 may include a pair of toggles F1, F2, Fig. 3 (not shown), forming a conventional pulse counter controlled by a pulse signal C applied to terminal 72. The toggles are set in accordance with the number of pulses C applied so that a corresponding one of the AND gates G3, G4, G6, G7 is opened to supply a signal via the appropriate D.C. amplifier 23 &c. to a terminal 73, 74, 76 or 77 corresponding to the like numbered terminals on Fig. 1. In a modification of Fig. 1, each oscillator output circuit includes a diode to ensure isolation of those circuits not in use.
GB35294/63A
1962-09-11
1963-09-06
A frequency switching device
Expired
GB1021915A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP3913962
1962-09-11
Publications (1)
Publication Number
Publication Date
GB1021915A
true
GB1021915A
(en)
1966-03-09
Family
ID=12544759
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB35294/63A
Expired
GB1021915A
(en)
1962-09-11
1963-09-06
A frequency switching device
Country Status (2)
Country
Link
US
(1)
US3296550A
(en)
GB
(1)
GB1021915A
(en)
Families Citing this family (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3345569A
(en)
*
1964-01-06
1967-10-03
Motorola Inc
Electronic control circuit including counter for selectively actuating one of a plurality of units
US3531724A
(en)
*
1968-08-23
1970-09-29
Electra Corp
Signal-seeking radio receiver
US3581239A
(en)
*
1969-03-05
1971-05-25
Motorola Inc
Frequency modulated crystal controlled oscillator operable at a plurality of temperature compensated center frequencies
US4342008A
(en)
*
1981-01-29
1982-07-27
Hewlett-Packard Company
Switched tuneable frequency multiplier
US5748049A
(en)
*
1994-11-23
1998-05-05
Anadigics, Inc.
Multi-frequency local oscillators
JP3936190B2
(en)
*
1999-11-16
2007-06-27
アンリツ株式会社
Signal analysis device with YTO
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
USRE25515E
(en)
*
1964-01-21
peterson
US2460900A
(en)
*
1943-12-31
1949-02-08
Philco Corp
Wide-band superheterodyne receiver
BE548371A
(en)
*
1955-06-10
US2840713A
(en)
*
1956-03-19
1958-06-24
Collins Radio Co
Multiple tone oscillator system having constant peak output volatage
US2939359A
(en)
*
1958-03-12
1960-06-07
Allen Organ Company Inc
Circuit for tuning oscillators of an electronic musical instrument
US3105106A
(en)
*
1962-01-15
1963-09-24
Park Baker Electronic Dev Corp
Gaseous glow tube controlled musical instrument
1963
1963-09-06
GB
GB35294/63A
patent/GB1021915A/en
not_active
Expired
1963-09-11
US
US308229A
patent/US3296550A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
US3296550A
(en)
1967-01-03
Similar Documents
Publication
Publication Date
Title
GB1278568A
(en)
1972-06-21
Radio transmission control arrangements
GB701018A
(en)
1953-12-16
Improvements in or relating to electronic switching devices for use in radio systemsand multi-channel telephone systems
GB1472208A
(en)
1977-05-04
Electronic switches
GB1021915A
(en)
1966-03-09
A frequency switching device
GB1026841A
(en)
1966-04-20
Automatic control switchboard assembly
GB1162044A
(en)
1969-08-20
Differential Amplifier
GB1350205A
(en)
1974-04-18
Telephone subscribers instrument circuits
GB934013A
(en)
1963-08-14
Electronic coding device for radio or telephone links
GB1267441A
(en)
1972-03-22
Fluid flow metering method and system
GB805323A
(en)
1958-12-03
Channel selectors for signal-seeking receivers
GB910940A
(en)
1962-11-21
Improvements in or relating to switching arrangements for multi-channel pulse-communication systems
GB1068288A
(en)
1967-05-10
Improvements in or relating to ionosphere sounder systems
GB919167A
(en)
1963-02-20
Improvements in or relating to pulse amplitude modulated signal transmission systems
GB842481A
(en)
1960-07-27
Improvements relating to multi-channel pulse communication systems
GB889754A
(en)
1962-02-21
Electronic gate circuit
GB1075120A
(en)
1967-07-12
Electronic switching device
GB1382990A
(en)
1975-02-05
Intercommunication systems
GB1016382A
(en)
1966-01-12
Improvements in or relating to electrical signalling systems
GB874667A
(en)
1961-08-10
Improvements in or relating to passive electronic switches
GB1239462A
(en)
1971-07-14
GB1203374A
(en)
1970-08-26
Switching circuit
GB1077877A
(en)
1967-08-02
Improvements in crystal oscillators
GB1047522A
(en)
1966-11-09
Improvements in or relating to variable impedance electrical circuits
GB965027A
(en)
1964-07-29
Intelligence transmission systems
SARAEV
1972
Single-tank tuned transistor amplifier of the common-base common-base type(Single circuit amplifier design characterized by cascade connections of transistors to resonance network)
None