DK147560C - Modtagerantenne for magnetiske signaler, f.eks. ferritantenne - Google Patents
Modtagerantenne for magnetiske signaler, f.eks. ferritantenneInfo
- Publication number
- DK147560C DK147560C DK107080A DK107080A DK147560C DK 147560 C DK147560 C DK 147560C DK 107080 A DK107080 A DK 107080A DK 107080 A DK107080 A DK 107080A DK 147560 C DK147560 C DK 147560C
- Authority
- DK
- Denmark
- Prior art keywords
- ferrite
- receiver antenna
- magnetic signals
- signals receiver
- magnetic
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/28—Impedance matching networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/46—One-port networks
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK107080A DK147560C (da) | 1980-03-13 | 1980-03-13 | Modtagerantenne for magnetiske signaler, f.eks. ferritantenne |
GB8107901A GB2071920B (en) | 1980-03-13 | 1981-03-12 | Aerial circuit |
DE19813109391 DE3109391A1 (de) | 1980-03-13 | 1981-03-12 | "antennenkreis" |
US06/243,623 US4442434A (en) | 1980-03-13 | 1981-03-13 | Antenna circuit of the negative impedance type |
JP3640681A JPS56137739A (en) | 1980-03-13 | 1981-03-13 | Antenna circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK107080 | 1980-03-13 | ||
DK107080A DK147560C (da) | 1980-03-13 | 1980-03-13 | Modtagerantenne for magnetiske signaler, f.eks. ferritantenne |
Publications (3)
Publication Number | Publication Date |
---|---|
DK107080A DK107080A (da) | 1981-09-14 |
DK147560B DK147560B (da) | 1984-10-01 |
DK147560C true DK147560C (da) | 1985-07-22 |
Family
ID=8100651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK107080A DK147560C (da) | 1980-03-13 | 1980-03-13 | Modtagerantenne for magnetiske signaler, f.eks. ferritantenne |
Country Status (5)
Country | Link |
---|---|
US (1) | US4442434A (da) |
JP (1) | JPS56137739A (da) |
DE (1) | DE3109391A1 (da) |
DK (1) | DK147560C (da) |
GB (1) | GB2071920B (da) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61196625A (ja) * | 1985-02-26 | 1986-08-30 | Sony Corp | オ−トダイン受信機 |
US5311198A (en) * | 1990-08-23 | 1994-05-10 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Active antenna |
US5296866A (en) * | 1991-07-29 | 1994-03-22 | The United States Of America As Represented By The Adminsitrator Of The National Aeronautics And Space Administration | Active antenna |
US5982764A (en) | 1995-05-18 | 1999-11-09 | Aura Communications, Inc. | Time-multiplexed short-range magnetic communications |
CN1178406C (zh) * | 1995-05-18 | 2004-12-01 | 奥拉通讯公司 | 短距离磁通信系统 |
US5912925A (en) | 1995-05-18 | 1999-06-15 | Aura Communications, Inc. | Diversity circuit for magnetic communication system |
US6121940A (en) * | 1997-09-04 | 2000-09-19 | Ail Systems, Inc. | Apparatus and method for broadband matching of electrically small antennas |
AU2781699A (en) | 1998-03-13 | 1999-09-27 | Florida International University | Apparatus for measuring high frequency currents |
US7532901B1 (en) | 2001-03-16 | 2009-05-12 | Radeum, Inc. | Methods and apparatus to detect location and orientation in an inductive system |
US7142811B2 (en) * | 2001-03-16 | 2006-11-28 | Aura Communications Technology, Inc. | Wireless communication over a transducer device |
US6856291B2 (en) * | 2002-08-15 | 2005-02-15 | University Of Pittsburgh- Of The Commonwealth System Of Higher Education | Energy harvesting circuits and associated methods |
CN100559654C (zh) * | 2002-08-15 | 2009-11-11 | 匹兹堡大学高等教育联邦体系 | 能量收获电路及其所关联的方法 |
US9209525B2 (en) | 2011-04-01 | 2015-12-08 | Q-Track Corporation | Directive, electrically-small UWB antenna system and method |
US10333494B2 (en) | 2014-12-24 | 2019-06-25 | Qorvo Us, Inc. | Simplified acoustic RF resonator parallel capacitance compensation |
US10581156B2 (en) * | 2016-05-04 | 2020-03-03 | Qorvo Us, Inc. | Compensation circuit to mitigate antenna-to-antenna coupling |
US10581403B2 (en) | 2016-07-11 | 2020-03-03 | Qorvo Us, Inc. | Device having a titanium-alloyed surface |
US11050412B2 (en) | 2016-09-09 | 2021-06-29 | Qorvo Us, Inc. | Acoustic filter using acoustic coupling |
US11165413B2 (en) | 2017-01-30 | 2021-11-02 | Qorvo Us, Inc. | Coupled resonator structure |
US11165412B2 (en) | 2017-01-30 | 2021-11-02 | Qorvo Us, Inc. | Zero-output coupled resonator filter and related radio frequency filter circuit |
US10873318B2 (en) | 2017-06-08 | 2020-12-22 | Qorvo Us, Inc. | Filter circuits having acoustic wave resonators in a transversal configuration |
JP6734831B2 (ja) * | 2017-10-04 | 2020-08-05 | 矢崎総業株式会社 | 検出機器及び検出システム |
US10461440B2 (en) * | 2017-11-15 | 2019-10-29 | University Of Zagreb Faculty Of Electrical Engineering And Computing | Antenna-transmitter array |
US11152913B2 (en) | 2018-03-28 | 2021-10-19 | Qorvo Us, Inc. | Bulk acoustic wave (BAW) resonator |
CN108666770A (zh) * | 2018-04-20 | 2018-10-16 | 浙江大学 | 一种用运算放大器对电小天线的补偿方法 |
US11146247B2 (en) | 2019-07-25 | 2021-10-12 | Qorvo Us, Inc. | Stacked crystal filter structures |
US11757430B2 (en) | 2020-01-07 | 2023-09-12 | Qorvo Us, Inc. | Acoustic filter circuit for noise suppression outside resonance frequency |
US11146246B2 (en) | 2020-01-13 | 2021-10-12 | Qorvo Us, Inc. | Phase shift structures for acoustic resonators |
US11146245B2 (en) | 2020-01-13 | 2021-10-12 | Qorvo Us, Inc. | Mode suppression in acoustic resonators |
US11632097B2 (en) | 2020-11-04 | 2023-04-18 | Qorvo Us, Inc. | Coupled resonator filter device |
US11575363B2 (en) | 2021-01-19 | 2023-02-07 | Qorvo Us, Inc. | Hybrid bulk acoustic wave filter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3528014A (en) * | 1966-06-10 | 1970-09-08 | Bunker Ramo | Submarine communications antenna system |
DE1283307B (de) * | 1967-10-21 | 1968-11-21 | August Schwer Soehne Gmbh | Antennenverstaerker |
GB1231022A (da) * | 1968-10-19 | 1971-05-05 | ||
US3953799A (en) * | 1968-10-23 | 1976-04-27 | The Bunker Ramo Corporation | Broadband VLF loop antenna system |
US3721989A (en) * | 1971-06-30 | 1973-03-20 | Northrop Corp | Cross loop antenna |
WO1980002782A1 (en) * | 1979-05-25 | 1980-12-11 | Tracor | Antenna low-noise q spoiling circuit |
-
1980
- 1980-03-13 DK DK107080A patent/DK147560C/da not_active IP Right Cessation
-
1981
- 1981-03-12 GB GB8107901A patent/GB2071920B/en not_active Expired
- 1981-03-12 DE DE19813109391 patent/DE3109391A1/de not_active Ceased
- 1981-03-13 US US06/243,623 patent/US4442434A/en not_active Expired - Fee Related
- 1981-03-13 JP JP3640681A patent/JPS56137739A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US4442434A (en) | 1984-04-10 |
DK107080A (da) | 1981-09-14 |
DK147560B (da) | 1984-10-01 |
GB2071920A (en) | 1981-09-23 |
DE3109391A1 (de) | 1982-03-04 |
GB2071920B (en) | 1984-01-25 |
JPS56137739A (en) | 1981-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |