DE1945850B2 - Loop antenna - Google Patents
Loop antennaInfo
- Publication number
- DE1945850B2 DE1945850B2 DE1945850A DE1945850A DE1945850B2 DE 1945850 B2 DE1945850 B2 DE 1945850B2 DE 1945850 A DE1945850 A DE 1945850A DE 1945850 A DE1945850 A DE 1945850A DE 1945850 B2 DE1945850 B2 DE 1945850B2
- Authority
- DE
- Germany
- Prior art keywords
- legs
- antenna
- ring antenna
- loop antenna
- ring
- 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.)
- Granted
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
- H01Q7/005—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 with variable reactance for tuning the antenna
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
Die Erfindung betrifft eine Ringantenne entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a loop antenna according to the preamble of claim 1.
Eine derartigt Ringantenne ist aus der DE-PS 73 146 bekannt Bei d:2ser A .tenne bestehen die Schenkel aus jeweils Ewei elektrischen Leitern, die an den Enden verbunden sind. Bei einer derartigen Antenne ergibt sich eine Richtcharakteristik, bei der zwei Seitenkeulen auftreten.Such a ring antenna is known from DE-PS 73 146. In d : 2ser A .tenne, the legs each consist of Ewei electrical conductors that are connected at the ends. Such an antenna has a directional characteristic in which two side lobes occur.
Der Erfindung liegt die Aufgabe zugrunde, die Ringantenne der eingangs ,genannten Art so zu verbessern, daß sie in einem breiten Frequenzband verwendbar ist, ein hohes Vor/RDck-Verhältnis und damit eine hohe Richtwirkung hatThe invention is based on the object of providing the ring antenna of the type mentioned at the beginning improve its usability in a wide frequency band, a high pre / RDck ratio and thus has a high directivity
Gelöst wird diese Aufgabe gemäß der Erfindung durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale, Zweckmäßige Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. This object is achieved according to the invention by what is stated in the characterizing part of claim 1 specified features, expedient embodiments of the invention emerge from the subclaims.
Eine derartige Ringantenne hat eäne Richtcharakteristik ohne Seitenkeulen.Such a ring antenna has a directional characteristic without side lobes.
Aus »IEEE Transactions on Antennas and Propagation«, 1965, Seite 7~?0, ist es zwar bekannt, eine Ringantenne an unterschiedlichen Stellen des Ringes zu unterbrechen und an diesen Unterbrechungsstellen Lastimpedanzen einzuschalten, jedoch liegen diese Unterbrechungsstellen anders als bei der Ringantenne der Erfindung.From "IEEE Transactions on Antennas and Propagation", 1965, page 7 ~? 0, it is known, one To interrupt ring antenna at different points of the ring and at these interruption points Switch on load impedances, but these interruption points are different than with the ring antenna the invention.
Die Erfindung wird nachstehend anhand der Zeichnung beispielsweise erläutert, die eine perspektivische Darstellung der Ringantenne zeigtThe invention is explained below with reference to the drawing, for example, which shows a perspective Representation of the loop antenna shows
Die gezeigte Ringantenne 17 besteht aus zwei gebogenen, als leitende Flächen wirkenden Schenkeln 20,21 und 22,23, die jeweils an ihren beiden Enden in Richtung senkrecht zur Ebene der Ringantenne schmal und in ihrer Mitte breit ausgebildet sind Zwei benachbarte, durch einen Spalt 25 getrennte Enden der Schenkel sind an den Punkten 19 durch eine Lastimpedanz ZZ verbunden, und die diesen gegenüberliegenden Enden der Schenkel, die durch einen Spalt 24 getrennt sied, bilden den Antenneneingang und sind an den Stellen 18 mit entsprechenden Anschlüssen verbunden. Die Schenkel sind in ihrer Mitte durch einen Spalt 26 bzw. 27 unterbrochen und an den so gebildeten Unterbrechungssteüen durch ein Impedanzelement Zl bzw. ZA verbunden. Die oberen und unteren Kanten a und c der Schenkelhälften sind symmetrisch zueinander ausgebildet Die Schenkelhälften können aus leitfähigen Platten oder auch aus an der Stelle ihrer Berandung liegenden Drähten gebildet sein, wobei die oberen und unteren Drähte der Schenkel durch Stäbe verbunden sind. Die Bildung der Schenkel durch Drähte und Stäbe ist möglich, da sich der wirksame Strom hauptsächlich aus Stromkomponenten zusammensetzt, die bei plattenförmigen Schenkeln im Bereich der oberen und unteren Kanten a und c fließen.The ring antenna 17 shown consists of two curved legs 20, 21 and 22, 23 acting as conductive surfaces, each of which is narrow at its two ends in the direction perpendicular to the plane of the ring antenna and wide in its middle Separate ends of the legs are connected at points 19 by a load impedance ZZ , and the opposite ends of the legs, which are separated by a gap 24, form the antenna input and are connected to corresponding connections at points 18. The legs are interrupted in their middle by a gap 26 or 27 and connected at the so formed interruption sections by an impedance element Z1 or ZA. The upper and lower edges a and c of the leg halves are symmetrical to each other. The leg halves can be formed from conductive plates or from wires located at their edges, the upper and lower wires of the legs being connected by rods. The formation of the legs using wires and rods is possible, since the effective current is mainly composed of current components that flow in the area of the upper and lower edges a and c in the case of plate-shaped legs.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP43065131A JPS4912025B1 (en) | 1968-09-10 | 1968-09-10 | |
JP9193168A JPS4912024B1 (en) | 1968-12-14 | 1968-12-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1945850A1 DE1945850A1 (en) | 1970-03-26 |
DE1945850B2 true DE1945850B2 (en) | 1981-01-15 |
DE1945850C3 DE1945850C3 (en) | 1981-11-05 |
Family
ID=26406258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1945850A Expired DE1945850C3 (en) | 1968-09-10 | 1969-09-10 | Loop antenna |
Country Status (3)
Country | Link |
---|---|
US (1) | US3623110A (en) |
DE (1) | DE1945850C3 (en) |
GB (1) | GB1272990A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2907369A1 (en) * | 1979-02-24 | 1980-08-28 | Dornier System Gmbh | Towed aircraft aerial signalling hits during shooting practice - has printed circuit board with ring aerial and dipole for dual frequency range operation |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3737907A (en) * | 1971-06-30 | 1973-06-05 | Mini Products Inc | Multiband quad and loop antenna |
US3721990A (en) * | 1971-12-27 | 1973-03-20 | Rca Corp | Physically small combined loop and dipole all channel television antenna system |
US3740753A (en) * | 1972-02-28 | 1973-06-19 | Mini Prod Inc | Multiband quad and loop antenna |
US3761933A (en) * | 1972-09-21 | 1973-09-25 | Rca Corp | Loop antenna with distributed impedance near the terminating gap |
JPS5753684B2 (en) * | 1973-06-15 | 1982-11-15 | ||
AU532289B2 (en) * | 1978-12-21 | 1983-09-22 | Sony Corporation | Segmented loop antenna system |
US4380011A (en) * | 1980-11-25 | 1983-04-12 | Rca Corporation | Loop antenna arrangement for inclusion in a television receiver |
US5285210A (en) * | 1990-05-08 | 1994-02-08 | Nippon Sheet Glass Co., Ltd. | Double loop antenna with reactance elements |
EP0584882A1 (en) * | 1992-08-28 | 1994-03-02 | Philips Electronics Uk Limited | Loop antenna |
US5900842A (en) * | 1997-09-20 | 1999-05-04 | Lucent Technologies, Inc. | Inexpensive directional antenna that is easily tuned and weather resistant |
US6359594B1 (en) * | 1999-12-01 | 2002-03-19 | Logitech Europe S.A. | Loop antenna parasitics reduction technique |
GB0115023D0 (en) * | 2001-06-20 | 2001-08-08 | Univ Belfast | Improvements relating to antennas |
US20090146902A1 (en) * | 2007-11-09 | 2009-06-11 | Kuen-Hua Li | Loop-Type Antenna and Antenna Array |
DE102009011542A1 (en) * | 2009-03-03 | 2010-09-09 | Heinz Prof. Dr.-Ing. Lindenmeier | Antenna for receiving circularly in a direction of rotation of the polarization of broadcast satellite radio signals |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2166750A (en) * | 1936-02-15 | 1939-07-18 | Rca Corp | Antenna |
US2520154A (en) * | 1948-10-16 | 1950-08-29 | Standard Telephones Cables Ltd | Radio antenna |
US2644888A (en) * | 1949-01-25 | 1953-07-07 | John J Root | High-frequency antenna |
US2657312A (en) * | 1951-09-28 | 1953-10-27 | Saranga Cesare | Radio and television antenna |
DE973146C (en) * | 1953-07-23 | 1959-12-10 | Telefunken Gmbh | Antenna arrangement for a wide frequency range |
US3035266A (en) * | 1958-05-23 | 1962-05-15 | Marshall Thomas Albert | Broad band active element for television arrays |
US3078462A (en) * | 1958-07-18 | 1963-02-19 | Julius Herman | One-turn loop antenna |
US3441935A (en) * | 1965-08-19 | 1969-04-29 | Technical Appliance Corp | Loop antenna with negative resistance element at terminating gap |
-
1969
- 1969-09-09 US US856281A patent/US3623110A/en not_active Expired - Lifetime
- 1969-09-10 GB GB44682/69A patent/GB1272990A/en not_active Expired
- 1969-09-10 DE DE1945850A patent/DE1945850C3/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2907369A1 (en) * | 1979-02-24 | 1980-08-28 | Dornier System Gmbh | Towed aircraft aerial signalling hits during shooting practice - has printed circuit board with ring aerial and dipole for dual frequency range operation |
Also Published As
Publication number | Publication date |
---|---|
GB1272990A (en) | 1972-05-03 |
DE1945850C3 (en) | 1981-11-05 |
US3623110A (en) | 1971-11-23 |
DE1945850A1 (en) | 1970-03-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OI | Miscellaneous see part 1 | ||
C3 | Grant after two publication steps (3rd publication) |