KR830001771B1 - Am 이중통신 트랜시버 - Google Patents

Am 이중통신 트랜시버 Download PDF

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Publication number
KR830001771B1
KR830001771B1 KR1019800002237A KR800002237A KR830001771B1 KR 830001771 B1 KR830001771 B1 KR 830001771B1 KR 1019800002237 A KR1019800002237 A KR 1019800002237A KR 800002237 A KR800002237 A KR 800002237A KR 830001771 B1 KR830001771 B1 KR 830001771B1
Authority
KR
South Korea
Prior art keywords
signal
mixer
balance
antenna
phase
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
KR1019800002237A
Other languages
English (en)
Korean (ko)
Other versions
KR830003997A (ko
Inventor
케이스 리차드슨 크리스토퍼
Original Assignee
플레세이 오우버시이스 리미티드
로날드 니콜슨
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 플레세이 오우버시이스 리미티드, 로날드 니콜슨 filed Critical 플레세이 오우버시이스 리미티드
Publication of KR830003997A publication Critical patent/KR830003997A/ko
Application granted granted Critical
Publication of KR830001771B1 publication Critical patent/KR830001771B1/ko
Expired legal-status Critical Current

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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)
KR1019800002237A 1979-06-08 1980-06-07 Am 이중통신 트랜시버 Expired KR830001771B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB7919963 1979-06-08
GB7919963A GB2052216B (en) 1979-06-08 1979-06-08 Duplex transceivers
GB19963 1979-06-08

Publications (2)

Publication Number Publication Date
KR830003997A KR830003997A (ko) 1983-06-30
KR830001771B1 true KR830001771B1 (ko) 1983-09-03

Family

ID=10505706

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019800002237A Expired KR830001771B1 (ko) 1979-06-08 1980-06-07 Am 이중통신 트랜시버

Country Status (13)

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

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
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
JPS6349076A (ja) * 1986-08-15 1988-03-01 Unitika Ltd ハイブリド−マ細胞株
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 (enExample) * 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
BR8003537A (pt) 1981-01-05
GB2052216A (en) 1981-01-21
IN152794B (enExample) 1984-04-07
US4353127A (en) 1982-10-05
DK246880A (da) 1980-12-09
GB2052216B (en) 1983-09-21
DE3021216A1 (de) 1980-12-11
FR2458952A1 (fr) 1981-01-02
IL60171A0 (en) 1980-07-31
KR830003997A (ko) 1983-06-30
IT8022640A0 (it) 1980-06-06
NL8003321A (nl) 1980-12-10
IL60171A (en) 1983-05-15
JPS5619239A (en) 1981-02-23
FR2458952B1 (enExample) 1983-11-25
CH650624A5 (de) 1985-07-31
IT1131524B (it) 1986-06-25

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Legal Events

Date Code Title Description
PN2301 Change of applicant

Patent event date: 19801127

Comment text: Notification of Change of Applicant

Patent event code: PN23011R01D