GB376670A - Improvements in or relating to devices for obtaining radio reception free from interference - Google Patents
Improvements in or relating to devices for obtaining radio reception free from interferenceInfo
- Publication number
- GB376670A GB376670A GB3347/32A GB334732A GB376670A GB 376670 A GB376670 A GB 376670A GB 3347/32 A GB3347/32 A GB 3347/32A GB 334732 A GB334732 A GB 334732A GB 376670 A GB376670 A GB 376670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- interference
- coupling
- feb
- adjust
- 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
Classifications
-
- 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1009—Placing the antenna at a place where the noise level is low and using a noise-free transmission line between the antenna and the receivers
-
- 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Filters And Equalizers (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Near-Field Transmission Systems (AREA)
- Noise Elimination (AREA)
Abstract
376,670. Wireless receiving systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Feb. 4, 1932, No. 3347. Convention date, Feb. 18, 1931. [Class 40 (v).] Relates to systems for cutting-out local interference by utilizing two aerials of unequal length and coupling them to the receiver in such a way that the common pick-up due to the interference is balanced out, leaving the desired signal alone to influence the set. According to the invention a balancing condenser 7 is inserted in series with the two aerial coils 4, 5 so as to adjust the effective earthing point 6. The coupling coils are enclosed in an earthed screening-box 9 ; capacity-coupling between them is prevented by an earthed screen 10; and the lead-in conductors to the set 3 are also screened at 11. Fig. 2 shows an alternative arrangement utilizing a differential condenser 14, 15 to adjust the earthing point. The two aerial coils may be tuned by condensers shunted across the coils 4, 5.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE376670X | 1931-02-18 | ||
DE377116X | 1931-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB376670A true GB376670A (en) | 1932-07-14 |
Family
ID=31888942
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3347/32A Expired GB376670A (en) | 1931-02-18 | 1932-02-04 | Improvements in or relating to devices for obtaining radio reception free from interference |
GB3586/32A Expired GB377116A (en) | 1931-02-18 | 1932-02-06 | Improvements in or relating to devices for obtaining radio reception free from interference |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3586/32A Expired GB377116A (en) | 1931-02-18 | 1932-02-06 | Improvements in or relating to devices for obtaining radio reception free from interference |
Country Status (4)
Country | Link |
---|---|
US (2) | US2054645A (en) |
BE (1) | BE386144A (en) |
FR (1) | FR730830A (en) |
GB (2) | GB376670A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2617926A (en) * | 1948-07-29 | 1952-11-11 | Sissman Louise | Interference reducing radio receiving system |
US10600564B2 (en) * | 2010-05-19 | 2020-03-24 | Auckland Uniservices Limited | Inductive power transfer system primary track topologies |
-
0
- BE BE386144D patent/BE386144A/xx unknown
-
1932
- 1932-02-01 FR FR730830D patent/FR730830A/en not_active Expired
- 1932-02-04 GB GB3347/32A patent/GB376670A/en not_active Expired
- 1932-02-06 GB GB3586/32A patent/GB377116A/en not_active Expired
- 1932-02-27 US US595644A patent/US2054645A/en not_active Expired - Lifetime
- 1932-04-08 US US603927A patent/US1978661A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1978661A (en) | 1934-10-30 |
GB377116A (en) | 1932-07-21 |
US2054645A (en) | 1936-09-15 |
BE386144A (en) | |
FR730830A (en) | 1932-08-24 |
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