GB621803A - Radio receiving system - Google Patents

Radio receiving system

Info

Publication number
GB621803A
GB621803A GB18853/46A GB1885346A GB621803A GB 621803 A GB621803 A GB 621803A GB 18853/46 A GB18853/46 A GB 18853/46A GB 1885346 A GB1885346 A GB 1885346A GB 621803 A GB621803 A GB 621803A
Authority
GB
United Kingdom
Prior art keywords
antennμ
phase
receiver
indicator
phase adjuster
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
GB18853/46A
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 GB621803A publication Critical patent/GB621803A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

621,803. Frequency modulation; preventing interference. STANDARD TELEPHONES & CABLES, Ltd. June 24, 1946, No. 18853. Convention date, July 21, 1945. [Class 40 (v)] Heterodyne interference due to signals arriving over different transmission paths in F.M. reception is prevented by using spaced antennµ 1, 6, a phase adjuster 5 between one of the antennµ and the receiver and a beat indicator 10 connected ahead of the amplitude limiter stage. The phase adjuster 5 is adjusted so that the signal reaching the antennµ over the desired transmission path are applied in phase to the receiver, the undesired signals then balancing out partially due to phase difference, this being indicated by minimum amplitude variations on the indicator. The antennµ may be of rhombic type and in series or parallel. Different communication channels may thus be achieved.
GB18853/46A 1945-07-21 1946-06-24 Radio receiving system Expired GB621803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US621803XA 1945-07-21 1945-07-21

Publications (1)

Publication Number Publication Date
GB621803A true GB621803A (en) 1949-04-20

Family

ID=22040722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18853/46A Expired GB621803A (en) 1945-07-21 1946-06-24 Radio receiving system

Country Status (4)

Country Link
BE (1) BE470600A (en)
ES (1) ES173699A1 (en)
FR (1) FR927495A (en)
GB (1) GB621803A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1117662B (en) * 1957-02-04 1961-11-23 Siemens Ag Television receiving antenna arrangement for the elimination of reflection interference

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1117662B (en) * 1957-02-04 1961-11-23 Siemens Ag Television receiving antenna arrangement for the elimination of reflection interference

Also Published As

Publication number Publication date
BE470600A (en) 1947-07-17
ES173699A1 (en) 1946-07-01
FR927495A (en) 1947-10-30

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