NL181244C - Elektronische afstemschakeling. - Google Patents
Elektronische afstemschakeling.Info
- Publication number
- NL181244C NL181244C NLAANVRAGE7804161,A NL7804161A NL181244C NL 181244 C NL181244 C NL 181244C NL 7804161 A NL7804161 A NL 7804161A NL 181244 C NL181244 C NL 181244C
- Authority
- NL
- Netherlands
- Prior art keywords
- electronic tuning
- tuning
- electronic
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
-
- 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
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4469577A JPS53129511A (en) | 1977-04-19 | 1977-04-19 | Automotive receiver |
JP10003277A JPS5433606A (en) | 1977-08-19 | 1977-08-19 | Antenna tuning circuit |
JP10003377A JPS5433607A (en) | 1977-08-19 | 1977-08-19 | Antenna tuning circuit |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7804161A NL7804161A (nl) | 1978-10-23 |
NL181244B NL181244B (nl) | 1987-02-02 |
NL181244C true NL181244C (nl) | 1987-07-01 |
Family
ID=27291995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7804161,A NL181244C (nl) | 1977-04-19 | 1978-04-19 | Elektronische afstemschakeling. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4186350A (nl) |
AU (1) | AU498078B1 (nl) |
DE (1) | DE2816786C2 (nl) |
NL (1) | NL181244C (nl) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4381566A (en) * | 1979-06-14 | 1983-04-26 | Matsushita Electric Industrial Co., Ltd. | Electronic tuning antenna system |
DE3028099C2 (de) * | 1979-08-02 | 1983-03-24 | Fujitsu Ten Ltd., Kobe, Hyogo | Antenneneingangsschaltung |
US4339827A (en) * | 1980-11-25 | 1982-07-13 | Rca Corporation | Automatic tuning circuit arrangement with switched impedances |
US4510500A (en) * | 1983-01-28 | 1985-04-09 | The United States Of America As Represented By The Secretary Of The Army | Aircraft shorted loop antenna with impedance matching and amplification at feed point |
DE3316881C1 (de) * | 1983-05-07 | 1990-01-25 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Oszillatorschaltung fuer Fernsehempfangsgeraete |
US4646360A (en) * | 1984-03-07 | 1987-02-24 | Rca Corporation | Constant bandwidth RF filter with improved low frequency attenuation |
JPH0626320B2 (ja) * | 1986-04-09 | 1994-04-06 | 日本電気株式会社 | 無線送受信装置 |
DE3618170A1 (de) * | 1986-05-30 | 1987-12-03 | Rohde & Schwarz | Anordnung zum unterdruecken der sendefrequenz eines hochfrequenzsenders am eingang eines benachbarten empfaengers |
CA1276992C (en) * | 1986-09-26 | 1990-11-27 | Andrew E. Mcgirr | Electronically controlled matching circuit |
US6055420A (en) * | 1990-06-19 | 2000-04-25 | Bose Corproation | Antenna system having a high Q circuit |
JPH07283692A (ja) * | 1994-04-11 | 1995-10-27 | Toko Inc | Am受信機の電子同調回路 |
KR100450824B1 (ko) * | 2002-11-06 | 2004-10-01 | 삼성전자주식회사 | 고주파용 가변 캐패시터 구조 및 그 제조방법 |
US9112263B2 (en) * | 2010-02-25 | 2015-08-18 | Stmicroelectronics S.R.L. | Electronic communications device with antenna and electromagnetic shield |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2026075A (en) * | 1933-04-05 | 1935-12-31 | Hazeltine Corp | Simplified selective circuits |
US2027949A (en) * | 1933-10-28 | 1936-01-14 | Rca Corp | Image suppression arrangement |
US3372337A (en) * | 1964-04-27 | 1968-03-05 | Philco Ford Corp | Image frequency attenuation circuit |
DE1791182A1 (de) * | 1968-09-27 | 1971-11-25 | Telefunken Patent | Durchstimmbarer Vorkreis mit selektiver Wirkung |
US3626300A (en) * | 1969-08-04 | 1971-12-07 | Detroit Motors Corp | Image-rejecting frequency selective apparatus |
-
1978
- 1978-04-13 US US05/895,963 patent/US4186350A/en not_active Expired - Lifetime
- 1978-04-18 DE DE2816786A patent/DE2816786C2/de not_active Expired
- 1978-04-18 AU AU35191/78A patent/AU498078B1/en not_active Expired
- 1978-04-19 NL NLAANVRAGE7804161,A patent/NL181244C/nl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2816786A1 (de) | 1978-10-26 |
US4186350A (en) | 1980-01-29 |
NL7804161A (nl) | 1978-10-23 |
AU498078B1 (en) | 1979-02-08 |
DE2816786C2 (de) | 1983-05-11 |
NL181244B (nl) | 1987-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
V4 | Discontinued because of reaching the maximum lifetime of a patent |
Free format text: 980419 |