DE1945850B2 - Loop antenna - Google Patents

Loop antenna

Info

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
Application number
DE1945850A
Other languages
German (de)
Other versions
DE1945850C3 (en
DE1945850A1 (en
Inventor
Kousuke Tokio Akiba
Toshitada Chigasaki Doi
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.)
Sony Corp
Original Assignee
Sony Corp
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
Priority claimed from JP43065131A external-priority patent/JPS4912025B1/ja
Priority claimed from JP9193168A external-priority patent/JPS4912024B1/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of DE1945850A1 publication Critical patent/DE1945850A1/en
Publication of DE1945850B2 publication Critical patent/DE1945850B2/en
Application granted granted Critical
Publication of DE1945850C3 publication Critical patent/DE1945850C3/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00Antennas with active circuits or circuit elements integrated within them or attached to them
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00Loop 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
    • H01Q7/005Loop 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.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (4)

Patentansprüche;Claims; 1. Ringantenne, bestehend aus zwei gebogenen, als leitende Flächen wirkenden Schenkeln, die jeweils an ihren beiden Enden in Richtung senkrecht zur Ebene der Ringantenne schmal und in ihrer Mitte breit ausgebildet sind, wobei zwei benachbarte Enden der Schenkel Ober eine Lastimpedanz verbunden sind und die diesen gegenüberliegenden Enden dieser Schenke! den Antenneneingang bilden, ι ο dadurch gekennzeichnet, daß die Schenkel (20 bis 23) in ihrer Mitte durch einen Spalt (26, 27) unterbrochen sind1. Loop antenna, consisting of two curved, as conductive surfaces acting legs, each at its two ends in the direction perpendicular to the Level of the ring antenna are narrow and wide in their middle, with two adjacent Ends of the legs are connected via a load impedance and those opposite them Ends of this tavern! form the antenna input, ι ο characterized in that the legs (20 to 23) are interrupted in their middle by a gap (26, 27) 2. Ringantenne nach Anspruch 1, dadurch gekennzeichnet, daß die Schenkel durch an der Stelle ihrer Berandung liegende Drähte gebildet sind.2. Ring antenna according to claim 1, characterized in that the legs by at the In place of their border, lying wires are formed. 3. Ringantenne nach Anspruch 2, dadurch gekennzeichnet, daß die oberen und unteren Drähte der Schenkel durch Stäbe verbunden sind.3. ring antenna according to claim 2, characterized in that the upper and lower wires the legs are connected by rods. 4. Ringan^enne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß je ein Impedanzelement (Z2, ZA) an den Unterbrechungsstellen der Schenkel angeschaltet ist4. Ringan ^ enne according to one of claims 1 to 3, characterized in that an impedance element (Z2, ZA) is connected to the interruption points of the legs 2525th
DE1945850A 1968-09-10 1969-09-10 Loop antenna Expired DE1945850C3 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
DE2262511C3 (en) Combined VHF-UHF antenna
DE1945850C3 (en) Loop antenna
DE2638539C2 (en)
DE2041646C3 (en) Betband microwave directional coupler in stripline construction
DE19829714A1 (en) Antenna for polarised radio frequency signals
DE3341719A1 (en) SYMMETRY TRANSMITTER
DE1909092A1 (en) Hybrid coupler with 90 ° phase shift
DE2423420C3 (en) Directional antenna operated with advancing waves
DE1014181B (en) Radiator element for decimeter wave antennas
DE3215323A1 (en) Antenna in the form of a slotted line
DE561827C (en) Antenna with several vertical conductors arranged in a straight line
DE2522918A1 (en) DIRECTIONAL GUIDANCE WITH FIELD SHIFT EFFECT
DE861114C (en) Built-in antennas for TV and VHF receivers
DE1766285B2 (en) BROADBAND ANTENNA, COMPOSING OF TWO PARALLEL DIPOLES
DE959658C (en) Directional antenna
DE895316C (en) Antenna arrangement for generating a double-eight diagram
DE1163926B (en) Receiver connection cord for unbalanced receiving antenna systems
DE1268238B (en) Arrangement with four-pole adjustable in steps
DE1640644B1 (en) SEPARATING CONTACT STRIP
DE1907918C3 (en) Ring antenna consisting of two curved legs
AT237041B (en) Logarithmic periodic antenna
DE2156751C3 (en) Device for feeding a planar logarithmic periodic dipole antenna symmetrically to the earth
DE1222556B (en) Electrical device for mutually decoupled interconnection of several high frequency generators or consumers to a common high frequency consumer or generator
DE1516818C3 (en) Arrangement for balancing and simultaneous resistance transformation in high-frequency line systems
DE1250891B (en)

Legal Events

Date Code Title Description
OI Miscellaneous see part 1
C3 Grant after two publication steps (3rd publication)