GB1373736A - Short-range transceiver - Google Patents
Short-range transceiverInfo
- Publication number
- GB1373736A GB1373736A GB5735572A GB5735572A GB1373736A GB 1373736 A GB1373736 A GB 1373736A GB 5735572 A GB5735572 A GB 5735572A GB 5735572 A GB5735572 A GB 5735572A GB 1373736 A GB1373736 A GB 1373736A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- frequency
- oscillator
- filter
- output
- 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
Links
- 238000001514 detection method Methods 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
- G01S7/032—Constructional details for solid-state radar subsystems
-
- 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)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1373736 Radio signalling; aerials; radar THOMSON-CSF 12 Dec 1972 [28 Dec 1971] 57355/72 Headings H4L H4A and H4D A transmitter-receiver comprises a millimetric wave oscillator connected as a superregenerative amplifier relaxed by a relaxation oscillator and forming the final stage of the transmitting channel and the first stage of the receiving channel. As shown in Fig. 2, the transceiver comprises a millimetric wave oscillator connected as a super-regenerative amplifier 4 which is coupled to an antenna 5 and controlled by a relaxation oscillator 3 frequency modulated by the output of microphone 1 via amplifier 2. The amplifier 4 delivers R.F. pulses of variable recurrence frequency. At the remote station the relaxation oscillator operates at a frequency differeing from that of oscillator 3. During reception the oscillator 3 provides a fixed frequency for application to amplifier 4 the output of the amplifier being detected at 6 and supplied to a filter 7. For simpler operation the output of the filter may be amplified and frequency demodulated, Fig. 1 (not shown). For duplex operation, the output of filter 7 is supplied to a mixer 12 together with the output of oscillator 3 and the difference signal is amplified at 8, frequency demodulated at 19 and supplied via amplifier 10 to earphones 11. Doppler radar.-A millimetric wave oscillator connected as a super-regenerative amplifier 54, Fig. 3, is relaxed at a frequency of, for example, 300 MHz by a relaxation oscillator 53. Amplifier 54 is coupled to an antenna 55 and to a receiver comprising detector 56, filter 57 covering from 10 to 100 Hz, amplifier 58, L.F. detector 59 and a display instrument 60. The pulses reflected by a moving target produce at the output of detector 56 the Doppler frequency component which provides a measure of the speed of the target. Circuit and antenna details.-A cavity 70, Fig. 4, having a resonant frequency in the E.H.F. band contains an avalanche diode 61 a passage being provided to a horn antenna 5. One terminal of the diode is connected to an adjustable plunger 62 and a lead passing through a decoupling capactor 64 connects the other terminal to a filter 81, 82 (filter 7) and to a circuit comprising transistor 65 and resonant circuit 66, 67, the base of the transistor receiving negative pulses from the relaxation oscillator 3. The diode 61 oscillates for the duration of these pulses and effects detection by virtue of its negative resistance characteristic. Where the detected frequencies are very low, as in Fig. 3, circuit 66, 67, may be replaced by a resistor and circuit 81, 82, by a choke coil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN1209/CAL/73A IN138732B (en) | 1972-12-12 | 1973-05-23 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7147009A FR2165740B1 (en) | 1971-12-28 | 1971-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1373736A true GB1373736A (en) | 1974-11-13 |
Family
ID=9088226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5735572A Expired GB1373736A (en) | 1971-12-28 | 1972-12-12 | Short-range transceiver |
Country Status (10)
Country | Link |
---|---|
AR (1) | AR194771A1 (en) |
AU (1) | AU471541B2 (en) |
BR (1) | BR7209128D0 (en) |
CH (1) | CH561987A5 (en) |
DE (1) | DE2263869A1 (en) |
FR (1) | FR2165740B1 (en) |
GB (1) | GB1373736A (en) |
IT (1) | IT974364B (en) |
NL (1) | NL7217654A (en) |
SE (1) | SE381788B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2015103A1 (en) * | 2007-07-12 | 2009-01-14 | Qualcomm Incorporated | Method for determining line-of-sight (LOS) distance between remote communications devices |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2315202A1 (en) * | 1975-06-20 | 1977-01-14 | Thomson Csf | Millimetric waves transmitter-receiver - has avalanche diode in resonating cavity connected to other cavity with horn aerial |
FR2445665A1 (en) * | 1978-12-29 | 1980-07-25 | Pottier Bernard | MICROWAVE TELECOMMUNICATIONS DEVICE |
US5146613A (en) * | 1990-11-16 | 1992-09-08 | Delco Electronics Corporation | Low power uhf data transceiver |
-
1971
- 1971-12-28 FR FR7147009A patent/FR2165740B1/fr not_active Expired
-
1972
- 1972-12-12 GB GB5735572A patent/GB1373736A/en not_active Expired
- 1972-12-21 AR AR245774A patent/AR194771A1/en active
- 1972-12-22 AU AU50461/72A patent/AU471541B2/en not_active Expired
- 1972-12-22 CH CH1881372A patent/CH561987A5/xx not_active IP Right Cessation
- 1972-12-26 BR BR9128/72A patent/BR7209128D0/en unknown
- 1972-12-27 NL NL7217654A patent/NL7217654A/xx unknown
- 1972-12-27 SE SE7217012A patent/SE381788B/en unknown
- 1972-12-28 DE DE2263869A patent/DE2263869A1/en active Pending
- 1972-12-28 IT IT55088/72A patent/IT974364B/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2015103A1 (en) * | 2007-07-12 | 2009-01-14 | Qualcomm Incorporated | Method for determining line-of-sight (LOS) distance between remote communications devices |
WO2009009331A1 (en) * | 2007-07-12 | 2009-01-15 | Qualcomm Incorporated | Method for determining line-of-sight (los) distance between remote communications devices |
US8103228B2 (en) | 2007-07-12 | 2012-01-24 | Qualcomm Incorporated | Method for determining line-of-sight (LOS) distance between remote communications devices |
Also Published As
Publication number | Publication date |
---|---|
IT974364B (en) | 1974-06-20 |
FR2165740A1 (en) | 1973-08-10 |
NL7217654A (en) | 1973-07-02 |
CH561987A5 (en) | 1975-05-15 |
BR7209128D0 (en) | 1973-09-25 |
AU5046172A (en) | 1974-06-27 |
DE2263869A1 (en) | 1973-07-05 |
AU471541B2 (en) | 1974-06-27 |
SE381788B (en) | 1975-12-15 |
FR2165740B1 (en) | 1976-12-03 |
AR194771A1 (en) | 1973-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |