GB1070249A – Communication repeater system
– Google Patents
GB1070249A – Communication repeater system
– Google Patents
Communication repeater system
Info
Publication number
GB1070249A
GB1070249A
GB4955/66A
GB495566A
GB1070249A
GB 1070249 A
GB1070249 A
GB 1070249A
GB 4955/66 A
GB4955/66 A
GB 4955/66A
GB 495566 A
GB495566 A
GB 495566A
GB 1070249 A
GB1070249 A
GB 1070249A
Authority
GB
United Kingdom
Prior art keywords
signal
channels
summing network
signals
level
Prior art date
1965-02-09
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
GB4955/66A
Inventor
Paul Trice Hutchison
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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.)
1965-02-09
Filing date
1966-02-04
Publication date
1967-06-01
1966-02-04
Application filed by Western Electric Co Inc
filed
Critical
Western Electric Co Inc
1967-06-01
Publication of GB1070249A
publication
Critical
patent/GB1070249A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03G—CONTROL OF AMPLIFICATION
H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
H03G3/20—Automatic control
H03G3/30—Automatic control in amplifiers having semiconductor devices
H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B7/00—Radio transmission systems, i.e. using radiation field
H04B7/14—Relay systems
H04B7/15—Active relay systems
H04B7/185—Space-based or airborne stations; Stations for satellite systems
H04B7/1851—Systems using a satellite or space-based relay
H04B7/18515—Transmission equipment in satellites or space-based relays
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B7/00—Radio transmission systems, i.e. using radiation field
H04B7/14—Relay systems
H04B7/15—Active relay systems
H04B7/204—Multiple access
H04B7/2043—Mixed mode, TDM and FDM systems
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
Y02D30/00—Reducing energy consumption in communication networks
Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
1,070,249. Automatic volume control; radio signalling. WESTERN ELECTRIC CO. Inc. Feb. 4, 1966 [Feb. 9, 1965], No. 4955/66. Heading H4L and H4R. In a wideband repeater amplifier, e.g. in a satellite, which relays signals in any one or more of a number of different signal transmission frequency bands, the total power applied to the amplifier, which may be a travelling wave tube, is adjusted to the optimum for the particular number of simultaneously present signals by an automatic volume control which incorporates a comparator and a reference level in the control circuit, in which the reference level is adjusted in accordance with the number of signals present at any one time. In the embodiment of Fig. 1 the signal after pre-amplifier 13 is applied to a bank of band-pass filters 17a to 17g distributed aoross the transmission band of the repeater. The filter outputs are rectified in rectifiers 18a to 18g and applied to monostable triggers to cause outputs on the lines to summing network 20 so that the level on the output of summing network 20 is proportional to the number of signals being transmitted. The summing network output is applied to switches 21 1 to 21 4 and these switches are operated in accordance with the level of the input signal to provide the appropriate reference level to the comparator circuit 22. In comparator 22 a signal from monitor 14, depending on the total power in the transmission, is compared with the reference level, dependent on the number of individual signals, to produce a control voltage for the variable impedance device 12 which is controlled to provide the optimum power level having regard to the number of signal channels in use. In the described embodiment the out. puts of the 17b-19b, 17d-19d and 17f-19f, are arranged to be negative relative to the outputs of the remaining channels and it is shown that with the possible arrangements of channels peculiar to this particular system, some channels being wider than others, the output of the summing network is always proportional to the number of channels in use since the wider channels always overlap three band-pass filters, e.g. 17a, 17b and 17c, two of which, 17a and 17c, result in a positive signal to the summing network with one negative signal, from 17b, so that the net result is one positive signal input to the summing network.
GB4955/66A
1965-02-09
1966-02-04
Communication repeater system
Expired
GB1070249A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US431312A
US3411088A
(en)
1965-02-09
1965-02-09
Automatic input power level adjustment apparatus for amplifier of a broadband repeater
Publications (1)
Publication Number
Publication Date
GB1070249A
true
GB1070249A
(en)
1967-06-01
Family
ID=23711384
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4955/66A
Expired
GB1070249A
(en)
1965-02-09
1966-02-04
Communication repeater system
Country Status (3)
Country
Link
US
(1)
US3411088A
(en)
DE
(1)
DE1466606A1
(en)
GB
(1)
GB1070249A
(en)
Families Citing this family (16)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3667043A
(en)
*
1969-09-19
1972-05-30
Telcom Inc
Constant gain bandwidth product communication satellite repeater
US3988679A
(en)
*
1973-05-04
1976-10-26
General Electric Company
Wideband receiving system including multi-channel filter for eliminating narrowband interference
US3988712A
(en)
*
1974-11-27
1976-10-26
Texas Instruments Incorporated
Multiplex data communication system exploration surveys
DE2628906C2
(en)
*
1976-06-28
1978-06-22
Siemens Ag, 1000 Berlin Und 8000 Muenchen
Radio field in a directional radio link
FR2526609A1
(en)
*
1982-05-04
1983-11-10
Thomson Csf
MULTI-PORT SIGNAL RECEIVER PROTECTS DISTURBING SIGNALS
US4637017A
(en)
*
1984-05-21
1987-01-13
Communications Satellite Corporation
Monitoring of input backoff in time division multiple access communication satellites
JPS6290045A
(en)
*
1985-10-16
1987-04-24
Kokusai Denshin Denwa Co Ltd
Frequency assignment system in fdma communication system
US4754495A
(en)
*
1985-12-16
1988-06-28
Minori Kawano
Cell enhancer for cellular radio telephone system having bandpass filter arrangement
US4815106A
(en)
*
1986-04-16
1989-03-21
Adaptive Networks, Inc.
Power line communication apparatus
US5152002A
(en)
*
1987-08-03
1992-09-29
Orion Industries, Inc.
System and method for extending cell site coverage
US4941200A
(en)
*
1987-08-03
1990-07-10
Orion Industries, Inc.
Booster
US5115514A
(en)
*
1987-08-03
1992-05-19
Orion Industries, Inc.
Measuring and controlling signal feedback between the transmit and receive antennas of a communications booster
US5023930A
(en)
*
1987-08-03
1991-06-11
Orion Industries, Inc.
Booster with detectable boost operation
CA2323881A1
(en)
*
2000-10-18
2002-04-18
Dps Wireless Inc.
Adaptive personal repeater
EP1237298B1
(en)
*
2001-02-28
2008-09-03
KTFreetel Co., Ltd
Control Method for a Repeater System Having Oscillation Preventing Function and Automatic Reverse Output Disabling Function for Non-Subscriber
US20040106382A1
(en)
*
2002-12-03
2004-06-03
Andrew Corporation
Repeater calibration system
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2826637A
(en)
*
1952-11-14
1958-03-11
American Telephone & Telegraph
Automatic level equalizer
BE526245A
(en)
*
1953-02-06
US3028489A
(en)
*
1959-12-28
1962-04-03
Bell Telephone Labor Inc
Broadband radio relay system in which signals from adjacent repeaters are compared to control gain of each repeater
US3283249A
(en)
*
1963-12-23
1966-11-01
Bell Telephone Labor Inc
Broadband radio repeater having parallel channels
1965
1965-02-09
US
US431312A
patent/US3411088A/en
not_active
Expired – Lifetime
1966
1966-02-04
GB
GB4955/66A
patent/GB1070249A/en
not_active
Expired
1967
1967-02-08
DE
DE19671466606
patent/DE1466606A1/en
active
Pending
Also Published As
Publication number
Publication date
DE1466606A1
(en)
1969-08-28
US3411088A
(en)
1968-11-12
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