IN152794B - - Google Patents
Info
- Publication number
- IN152794B IN152794B IN678/CAL/80A IN678CA1980A IN152794B IN 152794 B IN152794 B IN 152794B IN 678CA1980 A IN678CA1980 A IN 678CA1980A IN 152794 B IN152794 B IN 152794B
- Authority
- IN
- India
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7919963A GB2052216B (en) | 1979-06-08 | 1979-06-08 | Duplex transceivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN152794B true IN152794B (nl) | 1984-04-07 |
Family
ID=10505706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN678/CAL/80A IN152794B (nl) | 1979-06-08 | 1980-06-09 |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4353127A (nl) |
| JP (1) | JPS5619239A (nl) |
| KR (1) | KR830001771B1 (nl) |
| BR (1) | BR8003537A (nl) |
| CH (1) | CH650624A5 (nl) |
| DE (1) | DE3021216A1 (nl) |
| DK (1) | DK246880A (nl) |
| FR (1) | FR2458952A1 (nl) |
| GB (1) | GB2052216B (nl) |
| IL (1) | IL60171A (nl) |
| IN (1) | IN152794B (nl) |
| IT (1) | IT1131524B (nl) |
| NL (1) | NL8003321A (nl) |
Families Citing this family (12)
| 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)
| 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 |
| FI67641C (fi) * | 1976-03-16 | 1985-04-10 | Plessey Overseas | Saendar/mottagare med gemensam kanal |
| 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 |
-
1979
- 1979-06-08 GB GB7919963A patent/GB2052216B/en not_active Expired
-
1980
- 1980-05-27 IL IL60171A patent/IL60171A/xx unknown
- 1980-06-02 US US06/155,763 patent/US4353127A/en not_active Expired - Lifetime
- 1980-06-04 DE DE19803021216 patent/DE3021216A1/de not_active Ceased
- 1980-06-04 FR FR8012451A patent/FR2458952A1/fr active Granted
- 1980-06-06 NL NL8003321A patent/NL8003321A/nl not_active Application Discontinuation
- 1980-06-06 CH CH4382/80A patent/CH650624A5/de not_active IP Right Cessation
- 1980-06-06 BR BR8003537A patent/BR8003537A/pt unknown
- 1980-06-06 JP JP7656180A patent/JPS5619239A/ja active Pending
- 1980-06-06 DK DK246880A patent/DK246880A/da not_active Application Discontinuation
- 1980-06-06 IT IT22640/80A patent/IT1131524B/it active
- 1980-06-07 KR KR1019800002237A patent/KR830001771B1/ko active
- 1980-06-09 IN IN678/CAL/80A patent/IN152794B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB2052216B (en) | 1983-09-21 |
| IT1131524B (it) | 1986-06-25 |
| FR2458952B1 (nl) | 1983-11-25 |
| JPS5619239A (en) | 1981-02-23 |
| DE3021216A1 (de) | 1980-12-11 |
| BR8003537A (pt) | 1981-01-05 |
| KR830001771B1 (ko) | 1983-09-03 |
| IL60171A (en) | 1983-05-15 |
| NL8003321A (nl) | 1980-12-10 |
| IL60171A0 (en) | 1980-07-31 |
| GB2052216A (en) | 1981-01-21 |
| FR2458952A1 (fr) | 1981-01-02 |
| US4353127A (en) | 1982-10-05 |
| IT8022640A0 (it) | 1980-06-06 |
| DK246880A (da) | 1980-12-09 |
| CH650624A5 (de) | 1985-07-31 |
| KR830003997A (ko) | 1983-06-30 |