NL8003321A - Duplex-zendontvanger. - Google Patents

Duplex-zendontvanger. Download PDF

Info

Publication number
NL8003321A
NL8003321A NL8003321A NL8003321A NL8003321A NL 8003321 A NL8003321 A NL 8003321A NL 8003321 A NL8003321 A NL 8003321A NL 8003321 A NL8003321 A NL 8003321A NL 8003321 A NL8003321 A NL 8003321A
Authority
NL
Netherlands
Prior art keywords
balance
signal
fed
antenna
phase
Prior art date
Application number
NL8003321A
Other languages
English (en)
Dutch (nl)
Original Assignee
Plessey Handel Investment 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 Plessey Handel Investment Ag filed Critical Plessey Handel Investment Ag
Publication of NL8003321A publication Critical patent/NL8003321A/nl

Links

Classifications

    • 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
    • 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
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Radio Relay Systems (AREA)
  • Transmitters (AREA)
NL8003321A 1979-06-08 1980-06-06 Duplex-zendontvanger. NL8003321A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7919963A GB2052216B (en) 1979-06-08 1979-06-08 Duplex transceivers
GB7919963 1979-06-08

Publications (1)

Publication Number Publication Date
NL8003321A true NL8003321A (nl) 1980-12-10

Family

ID=10505706

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8003321A NL8003321A (nl) 1979-06-08 1980-06-06 Duplex-zendontvanger.

Country Status (13)

Country Link
US (1) US4353127A (fr)
JP (1) JPS5619239A (fr)
KR (1) KR830001771B1 (fr)
BR (1) BR8003537A (fr)
CH (1) CH650624A5 (fr)
DE (1) DE3021216A1 (fr)
DK (1) DK246880A (fr)
FR (1) FR2458952A1 (fr)
GB (1) GB2052216B (fr)
IL (1) IL60171A (fr)
IN (1) IN152794B (fr)
IT (1) IT1131524B (fr)
NL (1) NL8003321A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519809A1 (fr) * 1982-01-08 1983-07-18 Meyer Sylvain Circuit hyperfrequences multifonction et dispositifs de transmission bidirectionnelle utilisant un tel circuit
JPS58204637A (ja) * 1982-05-24 1983-11-29 Nippon Telegr & Teleph Corp <Ntt> 干渉波補償方式
US4489413A (en) * 1982-07-19 1984-12-18 M/A-Com Dcc, Inc. Apparatus for controlling the receive and transmit frequency of a transceiver
JPS59103433A (ja) * 1982-12-06 1984-06-14 Nippon Telegr & Teleph Corp <Ntt> 干渉波補償装置
US4675863A (en) 1985-03-20 1987-06-23 International Mobile Machines Corp. Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US4825448A (en) * 1986-08-07 1989-04-25 International Mobile Machines Corporation Subscriber unit for wireless digital telephone system
JPS6349076A (ja) * 1986-08-15 1988-03-01 Unitika Ltd ハイブリド−マ細胞株
JPS6349095A (ja) * 1986-08-15 1988-03-01 Unitika Ltd 抗ｃｋ−ｍモノクロ−ナル抗体及びその製造法
FI77341C (fi) * 1987-05-19 1989-02-10 Vaisala Oy Foerfarande vid oeverfoering av signaler genom anvaendning av smalbandskanal.
US5546383A (en) 1993-09-30 1996-08-13 Cooley; David M. Modularly clustered radiotelephone system
DE19614979C2 (de) 1995-04-20 2001-05-17 Fujitsu Ltd Hochfrequenz-Sende-Empfangs-Vorrichtung zur Datenkommunikation
US7706743B1 (en) 2005-11-21 2010-04-27 Michael David Moore Low power radio device for providing access to aircraft communications (or other specialized communications) to the general public via commercial radio bands and receivers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3611139A (en) * 1970-02-25 1971-10-05 Us Navy Orthogonal mixer f{11 {0 f{11 {0 repeater
US3696429A (en) * 1971-05-24 1972-10-03 Cutler Hammer Inc Signal cancellation system
US3745462A (en) * 1972-01-20 1973-07-10 Public Syst Inc Mobile radio extension interface for converting conventional transmit/receive to a repeater
GB1530602A (en) * 1975-10-14 1978-11-01 Standard Telephones Cables Ltd Demodulator for fm signals
IN146303B (fr) * 1976-03-16 1979-04-21 Plessey Handel Investment Ag
JPS53107219A (en) * 1977-03-01 1978-09-19 Fujitsu Ltd Radio equipment
GB2050764B (en) * 1979-05-17 1983-08-10 Plessey Co Ltd Duplex transceivers

Also Published As

Publication number Publication date
IL60171A (en) 1983-05-15
IT1131524B (it) 1986-06-25
JPS5619239A (en) 1981-02-23
FR2458952B1 (fr) 1983-11-25
CH650624A5 (de) 1985-07-31
BR8003537A (pt) 1981-01-05
US4353127A (en) 1982-10-05
IL60171A0 (en) 1980-07-31
DE3021216A1 (de) 1980-12-11
FR2458952A1 (fr) 1981-01-02
IN152794B (fr) 1984-04-07
GB2052216B (en) 1983-09-21
KR830003997A (ko) 1983-06-30
DK246880A (da) 1980-12-09
KR830001771B1 (ko) 1983-09-03
GB2052216A (en) 1981-01-21
IT8022640A0 (it) 1980-06-06

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Legal Events

Date Code Title Description
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: PLESSEY OVERSEAS LIMITED

A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed