GB545052A - Improvements relating to multi-unit antenna communication systems - Google Patents

Improvements relating to multi-unit antenna communication systems

Info

Publication number
GB545052A
GB545052A GB17055/40A GB1705540A GB545052A GB 545052 A GB545052 A GB 545052A GB 17055/40 A GB17055/40 A GB 17055/40A GB 1705540 A GB1705540 A GB 1705540A GB 545052 A GB545052 A GB 545052A
Authority
GB
United Kingdom
Prior art keywords
phase
condensers
rotors
potentials
antenna
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
GB17055/40A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB545052A publication Critical patent/GB545052A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D221/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00
    • C07D221/02—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00 condensed with carbocyclic rings or ring systems
    • C07D221/04—Ortho- or peri-condensed ring systems
    • C07D221/18—Ring systems of four or more rings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/02—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic ring being only condensed in peri position
    • C09B5/14—Benz-azabenzanthrones (anthrapyridones)

Abstract

545,052. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. Nov. 29, 1940, No. 17055. Convention date. Feb. 17. [Class 40 (v)] A radio communication system comprises a steerable multi-unit antenna array and a translation device coupled to each antenna unit through a phase adjuster. Each of the phase adjusters comprises a variable impedance individual to an antenna unit and a phase splitting or combining network, for a transmitter or receiver respectively, common to all the variable impedances and coupled or connected in circuit between the variable impedances and the translating device. Antenna-counterpoise units 1 may each have a directive characteristic on a non- directive characteristic and together constitute an array for receiving an incoming signal over two diversity paths A, B. The units are connected through transformers 3, 4, 5 to the rotors 25 of phase-control variable condensers, one set 24 for the diversity branch A and the other set 31 for diversity branch B. Each condenser has four stators, corresponding stators in each diversity branch being connected together and to a terminal of a phase-combining network 42 comprising condensers 13, 14, 15, 16, coils 17, 18, and a resistance 19. The output terminals of each network 42 are connected to the receiver 39, a delay device 34 being included in branch A. The rotors 25 of condensers 24 are adjusted so that the out-of-phase potentials impressed thereon produce in-phase potentials on the output terminals for waves having the direction A and the rotors 25 of condensers 31 are adjusted to secure in-phase output potentials for a wave having direction B. Specifications 496,027 and 503,582 are referred to.
GB17055/40A 1940-02-17 1940-11-29 Improvements relating to multi-unit antenna communication systems Expired GB545052A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545052XA 1940-02-17 1940-02-17

Publications (1)

Publication Number Publication Date
GB545052A true GB545052A (en) 1942-05-08

Family

ID=21991551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17055/40A Expired GB545052A (en) 1940-02-17 1940-11-29 Improvements relating to multi-unit antenna communication systems

Country Status (1)

Country Link
GB (1) GB545052A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056961A (en) * 1957-08-15 1962-10-02 Post Office Steerable directional random antenna array
US8094086B2 (en) 2007-08-29 2012-01-10 Agere Systems Inc. Electronically steerable antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056961A (en) * 1957-08-15 1962-10-02 Post Office Steerable directional random antenna array
US8094086B2 (en) 2007-08-29 2012-01-10 Agere Systems Inc. Electronically steerable antenna

Similar Documents

Publication Publication Date Title
US2310692A (en) Method of and means for reducing multiple signals
US4051475A (en) Radio receiver isolation system
US2401717A (en) Signaling system
US3348150A (en) Diversity transmission system
ES424938A1 (en) Frequency division switching network
US2229078A (en) Radio relaying system
GB545052A (en) Improvements relating to multi-unit antenna communication systems
JPS6261162B2 (en)
US1773355A (en) Wireless-telegraph receiving system
US3022504A (en) Two-way radio telephone system utilizing frequency subbands to provide transmitter-receiver isolation
US1652092A (en) Polyphase broadcast distribution
US1768239A (en) Directive antenna system
US2278779A (en) Method of reducing multipath effects
US1432354A (en) Radiosignaling apparatus
US1597379A (en) Radio method and apparatus
GB504752A (en) Improvements in or relating to antenna systems
US1583826A (en) Method and apparatus for balancing out radiointerference on wire lines
US1637045A (en) Radio receiving system
US1800962A (en) Electric circuit
US1866261A (en) Signal transmission system
US1496155A (en) Art of radiocommunication
US1715701A (en) Inghottse electric
US1821650A (en) Radio system
US2370853A (en) Electrical carrier wave signaling system
US1672975A (en) Wave transmission system