US1953239A - Supervisory apparatus for radio beacons - Google Patents

Supervisory apparatus for radio beacons Download PDF

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Publication number
US1953239A
US1953239A US592216A US59221632A US1953239A US 1953239 A US1953239 A US 1953239A US 592216 A US592216 A US 592216A US 59221632 A US59221632 A US 59221632A US 1953239 A US1953239 A US 1953239A
Authority
US
United States
Prior art keywords
antenna
coils
radio beacons
supervisory apparatus
arrangement
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 - Lifetime
Application number
US592216A
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English (en)
Inventor
Kramar Ernst
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz 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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US1953239A publication Critical patent/US1953239A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G01S1/022—Means for monitoring or calibrating
    • G01S1/024—Means for monitoring or calibrating of beacon transmitters

Definitions

  • a supervisory arrangement for radio beacons transmitting complementary signals in a number of directions in which a pick up circuit, connected to indicating device, is located in a field derived from the energy employed for the transmission and resembling in form the field arising from the antenna or antenna.
  • High-frequency energy is supplied through the coupling arrangement L1, L2, to the coil L2, to which are coupled two choke coils Drl and D'r2 which are connected to two different circuits each feeding a directional antenna system.
  • the antennae are denoted by Al and A2.
  • Both choke coils have keying windings d1, (t2 and in addition the choke coil Dr2 has a winding d acting in opposition to its k ying winding (22.
  • the circuit arrangement shown in the drawing is such that the circuits supplying the high frequency energy to the antenna systems are alternately keyed by the coils Drl, Dr2 by means of the series-connected keying windings d1, d2.
  • the new invention there are inserted in the circuits of the antennae Al and A2, coupling arrangements L3 and L4 through which a small part of the antenna energy is supplied to the supervisory apparatus K.
  • the two coupling arrangements are connected to two inductances L5 and L6 which may be perpendicular to one another.
  • a third coil L7 is disposed, rotatably, in the manner of a goniometer arrangement.
  • the two coupling coils and L5 are at right angles in this case, if also the directional antenna systems are at right angles to one another. If the two directional antenna systeu s enclose a different angle, however, the coupling coils of the supervisory apparatus are arranged to have the latter angle with one another.
  • the inductance L7 represents herefore nothing more than a receiver having a frame antenna located in the field of the antenna Al and A2. It is therefore possible to control the conditions of the antenna circuits at this point satisfactorily, but not, of course, the conditions of reception at a great distance from the transmitter. However, since it may be assumed that the radiation conditions near a transmitter are constant, and any disturbing phenomena only become noticeable at a long distance, this supervision is quite suiiicient for practical requirements.
  • a valve-voltmeter V in circuit with the valve R is connected to the inductance L7 in welllrnown manner.
  • the antenna systems must be suitably re-tuned.
  • perfect supervision is obtained.
  • the supervisory apparatus responds. It responds even to a variation in the antenna. circuit itself, if for instance one of the antenna is influenced by temperature influences, iceload or the like so that the tuning is altered.
  • a supervisory apparatus for radio beacons with several antennae a plurality of coils disposed in space relation corresponding to the directions of signal transmission, means coupling each of these coils to a definite one of the circuits of the said antennae, a pick up circuit located in the field produced by said coils, and an indicator coupled to said pick up circuit.
  • an indicator means coupling the third coil to said indicator, and means for coupling each of the two first mentioned coils to a definite one of the circuits of the said antennae.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Selective Calling Equipment (AREA)
  • Transmitters (AREA)
US592216A 1931-02-13 1932-02-11 Supervisory apparatus for radio beacons Expired - Lifetime US1953239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE380689X 1931-02-13

Publications (1)

Publication Number Publication Date
US1953239A true US1953239A (en) 1934-04-03

Family

ID=6348732

Family Applications (1)

Application Number Title Priority Date Filing Date
US592216A Expired - Lifetime US1953239A (en) 1931-02-13 1932-02-11 Supervisory apparatus for radio beacons

Country Status (4)

Country Link
US (1) US1953239A (enrdf_load_stackoverflow)
BE (1) BE380689A (enrdf_load_stackoverflow)
FR (1) FR730663A (enrdf_load_stackoverflow)
GB (1) GB380689A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB380689A (en) 1932-09-22
FR730663A (fr) 1932-08-19
BE380689A (enrdf_load_stackoverflow)

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