GB615667A - Improvements in and relating to radio apparatus for the measurement of distance - Google Patents

Improvements in and relating to radio apparatus for the measurement of distance

Info

Publication number
GB615667A
GB615667A GB1135846A GB1135846A GB615667A GB 615667 A GB615667 A GB 615667A GB 1135846 A GB1135846 A GB 1135846A GB 1135846 A GB1135846 A GB 1135846A GB 615667 A GB615667 A GB 615667A
Authority
GB
United Kingdom
Prior art keywords
signals
phase difference
output
circuit
input
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
GB1135846A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1135846A priority Critical patent/GB615667A/en
Publication of GB615667A publication Critical patent/GB615667A/en
Expired legal-status Critical Current

Links

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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Abstract

615,667. Phase measurements. CLEGG, J. E. April 12, 1946, No. 11358. [Class 37] [Also in Group XL (c)] A device for measuring and indicating the phase difference between two applied signals has input terminals 31 and 32. Input 31 feeds in parallel valves 29 and 30 so that similar phased signals are generated in tuned circuits 43 and 44. Signals from input 32 are also divided into two parts feeding transformers 36 and 37, but owing to the network 34, 35 the signals in these transformers are in phase quadrature. Tuned circuit 43 is connected to a bridge modulator circuit including rectifiers 45, 46 arranged so that the signals therefrom are mixed with the output of transformer 37 to give an output voltage at c, d, that is a function of the phase difference of the applied oscillations. A similar bridge circuit mixes the output of circuit 44 and transformer 37 so that its output at e, f, is also a function of the phase difference of the signals applied. If conjugate coils 57, 58 of an indicator with a full sweep pointer are connected to c, d and e, f, the currents in them will be proportional to the sine and cosine respectively of the angular phase difference between the applied signals and the pointer will take up a position indicating the angle.
GB1135846A 1946-04-12 1946-04-12 Improvements in and relating to radio apparatus for the measurement of distance Expired GB615667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1135846A GB615667A (en) 1946-04-12 1946-04-12 Improvements in and relating to radio apparatus for the measurement of distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1135846A GB615667A (en) 1946-04-12 1946-04-12 Improvements in and relating to radio apparatus for the measurement of distance

Publications (1)

Publication Number Publication Date
GB615667A true GB615667A (en) 1949-01-10

Family

ID=9984785

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1135846A Expired GB615667A (en) 1946-04-12 1946-04-12 Improvements in and relating to radio apparatus for the measurement of distance

Country Status (1)

Country Link
GB (1) GB615667A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641754A (en) * 1946-04-12 1953-06-09 Nat Res Dev Terrain clearance indicator
DE1036332B (en) * 1955-02-21 1958-08-14 Collins Radio Co Low height knife
US2890449A (en) * 1953-12-02 1959-06-09 Itt Radio navigation system
US3117276A (en) * 1960-06-28 1964-01-07 Wisconsin Alumni Res Found Thickness measuring method and apparatus employing microwaves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641754A (en) * 1946-04-12 1953-06-09 Nat Res Dev Terrain clearance indicator
US2890449A (en) * 1953-12-02 1959-06-09 Itt Radio navigation system
DE1036332B (en) * 1955-02-21 1958-08-14 Collins Radio Co Low height knife
US3117276A (en) * 1960-06-28 1964-01-07 Wisconsin Alumni Res Found Thickness measuring method and apparatus employing microwaves

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