EP0606514A1 - Gruppenantenne mit Phasenverschiebung aus Mikrostreifenleitungselement - Google Patents

Gruppenantenne mit Phasenverschiebung aus Mikrostreifenleitungselement Download PDF

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Publication number
EP0606514A1
EP0606514A1 EP93100583A EP93100583A EP0606514A1 EP 0606514 A1 EP0606514 A1 EP 0606514A1 EP 93100583 A EP93100583 A EP 93100583A EP 93100583 A EP93100583 A EP 93100583A EP 0606514 A1 EP0606514 A1 EP 0606514A1
Authority
EP
European Patent Office
Prior art keywords
antenna
phase
radio signals
shift elements
processing circuit
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.)
Withdrawn
Application number
EP93100583A
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English (en)
French (fr)
Inventor
Rolan Wu
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to EP93100583A priority Critical patent/EP0606514A1/de
Publication of EP0606514A1 publication Critical patent/EP0606514A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • H01Q3/46—Active lenses or reflecting arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/27—Spiral antennas

Definitions

  • the present invention is related to an antenna, especially to an antenna designed in microwave technique and applicable in automobiles, mobile telephones and other radio communication systems for receiving and transmitting signals within low-frequency regions.
  • the antenna of the present invention can be concealed in a metal container such as a housing of a vehicle for receiving and transmitting radio signals.
  • the automobile antenna is designed co-axially and should be positioned outside of the vehicle for preventing the radio signals from being obstructed by the housing of the vehicle.
  • Such arrangement has disadvantages as follows: (1) the antenna is subject to shakes during the motion of the vehicle so that the reception and transmission of the radio signals will be influenced; and (2) the operation of the antenna is controlled by mechanical or electric means which is inconvenient in use.
  • the antenna is hidden inside of the vehicle.
  • the antenna should be inlaid in a glass (e.g. the back glass of the vehicle) to prevent from shaking.
  • the antenna system receives the radio signals only in specific directions but not in omnidirection. Therefore, the reception of the signals is worse.
  • such antenna is also designed by the co-axial technique and can not be concealed in a metal cover.
  • the signals received by the antenna before being utilized by the radio system should be converted to matched signals of the radio system via a matching circuit.
  • the circuitry of the antenna system is very complex.
  • One object of the present invention is to provide an antenna which is designed by microwave techniques to receive and transmit radio signals within low-frequency regions.
  • the antenna of the present invention is a microstrip form and the volume thereof is very small so that the antenna can be mounted very easily.
  • the other object of the present invention is to provide an antenna which receives and transmits signals in omnidirection and can be positioned in anywhere in the vehicle.
  • the antenna in accordance with the present invention can be used in radio systems and radio communication systems which can simultaneously receive and transmit the radio signals without an additional antenna.
  • the antenna of the present invention can also be concealed in the housing of the vehicle so that all the disadvantages occurred in the prior art can be overcome. More particularly, the antenna is operated in duplex manner which can transmit the radio signals radially and omnidirectionally.
  • the antenna 1 of the present invention is microstrip-typed and is made of magnetic materials which is arranged in a spiral form according to an electronic magnetic and microwave techniques. That is, the spiral form of the magnetic material is not a smooth curve and the width thereof is not uniform so as to form a signal-processing circuit having a number of processing means.
  • the antenna 1 further comprises a plurality of phase-shift elements 11 settled on appropriate positions of the spiral magnetic material for receiving and transmitting radio signals.
  • the phase-shift elements 11 are set on different positions of the antenna 1 so that the elements 11 have different phase angles respectively, making the phase-shift elements 11 be capable of receiving radio signals coming from various signal sources and transmitting signals in omnidirection.
  • the antenna 1 in accordance with the present invention can be positioned in a metal cover and especially, is applicable in mobile articles, such as automobiles and mobile telephones for receiving and transmitting radio signals.
  • the signal-processing circuit of the present invention can process the radio signals in a duplex manner.
  • a duplex means (shown in fig. 3) can make the radio signals transmitted in radial direction first (e.g., in the vehicle) and then in omnidirection (e.g., 3 meters apart from the vehicle) to reduce interferences.
  • the signal-processing manner of the antenna will be described detailedly hereinafter.
  • Fig. 2 is a receiving and signal-processing manner of the antenna 1 of the present invention.
  • the signal-processing circuit comprises a filtering means 21 and a compensation means 22.
  • the radio signals transmitted from a remote signal source T are received by the phase-shift elements 11 and then are sent to the signal-processing circuit for transforming to be receivable signals of a radio system 3 of a vehicle or a receiver 4 of a mobile telephone.
  • the radio signals are first filtered by the filtering means 21 to filter noise and undesired signals and then are compensated and converted by the compensation means 22 to provide matching signals of the radio system or mobile telephone system.
  • the signals are sent to the radio system or mobile telephone system for reception.
  • the signal-processing circuit of the present invention further comprises a duplex means 23 (shown in Fig. 3) which is particularly suitable when the antenna 1 of the present invention is used for transmitting radio signals (e.g., in the case of mobile telephone systems) to a remote signal source T' (which may not be the same as the source T shown in Fig. 2).
  • the signals are first filtered by the filtering means 21 to filter noise and undesired signals and then are compensated and converted by the compensation means 22. Finally, the compensated signals are transmitted by the phase-shift elements 11.
  • the signals especially in the transmission state, are subject to interferences of the internal equipments and the housing of the vehicle.
  • the duplex means 23 is designed to overcome this problem by making the signals transmitted in radial directions first and then in omnidirection after the signals being transmitted outwardly 3 meters (for example) apart from the vehicle.
  • the signal-processing circuit further comprises a synchronous means 24 for synchronizing the reception and transmission speeds of signals of each of the phase-shift elements 11.
  • the synchronous means 24 outputs a synchronous signal to each of the phase-shift elements 11 to control said element 11 to receive and transmit the radio signals with same speeds.
  • the duplex means 23 is used to make the signals transmitted radially first and omnidirectionally when the signals are 3 meters (for example) apart from the vehicle in which the transmission antenna is set. Accordingly, it can ensure that the signals can be transmitted outwardly to a receiver of the remote signal source without interferences.
  • the signal-processing circuit of the antenna of the present invention is manufactured by microwave magneto-chemical materials so that the signal-processing circuit would have a magnetization characteristic for providing the functions of magnetism coupling, phase-modulation, phase pre-correction and phase pre-compensation. As a result, the reception and transmission functions of the antenna are largely improved.
  • the antenna of the present invention can be manufactured to be disk-shaped (as shown in Fig. 1) which will occupy a small volume so that the antenna can be positioned in anywhere of the vehicle.
  • the phase-shift elements 11 are arranged in an array forming a variety of receiving/transmitting phases, the antenna can be concealed in metal housings and even in mobile articles without influencing the reception/transmission functions thereof.
  • the antenna of the present invention designed by microwave techniques is applicable in a low-frequency region between 535 KHz --1 GHz.

Landscapes

  • Mobile Radio Communication Systems (AREA)
  • Details Of Aerials (AREA)
EP93100583A 1993-01-15 1993-01-15 Gruppenantenne mit Phasenverschiebung aus Mikrostreifenleitungselement Withdrawn EP0606514A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93100583A EP0606514A1 (de) 1993-01-15 1993-01-15 Gruppenantenne mit Phasenverschiebung aus Mikrostreifenleitungselement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93100583A EP0606514A1 (de) 1993-01-15 1993-01-15 Gruppenantenne mit Phasenverschiebung aus Mikrostreifenleitungselement

Publications (1)

Publication Number Publication Date
EP0606514A1 true EP0606514A1 (de) 1994-07-20

Family

ID=8212535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100583A Withdrawn EP0606514A1 (de) 1993-01-15 1993-01-15 Gruppenantenne mit Phasenverschiebung aus Mikrostreifenleitungselement

Country Status (1)

Country Link
EP (1) EP0606514A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1058339A1 (de) * 1999-05-21 2000-12-06 Kabushiki Kaisha Toyota Chuo Kenkyusho Streifenleiterantenne
CN114388996A (zh) * 2020-10-22 2022-04-22 上海天马微电子有限公司 液晶移相器及其制作方法、液晶天线

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2452703A1 (de) * 1974-11-06 1976-05-13 Harris Corp Antenne
GB1496156A (en) * 1974-04-19 1977-12-30 Takeda Chemical Industries Ltd 2-chloropropionic acid and its derivatives
US4839659A (en) * 1988-08-01 1989-06-13 The United States Of America As Represented By The Secretary Of The Army Microstrip phase scan antenna array
GB2234859A (en) * 1989-06-30 1991-02-13 Era Patents Ltd Spiral antenna
US5170175A (en) * 1991-08-23 1992-12-08 Motorola, Inc. Thin film resistive loading for antennas
EP0432972B1 (de) * 1989-12-12 1993-06-23 British Aerospace Public Limited Company Verlängerung des Triebwerkträgers eines Flugzeugflügels zur Verminderung des aerodynamischen Verlustes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1496156A (en) * 1974-04-19 1977-12-30 Takeda Chemical Industries Ltd 2-chloropropionic acid and its derivatives
DE2452703A1 (de) * 1974-11-06 1976-05-13 Harris Corp Antenne
US4839659A (en) * 1988-08-01 1989-06-13 The United States Of America As Represented By The Secretary Of The Army Microstrip phase scan antenna array
GB2234859A (en) * 1989-06-30 1991-02-13 Era Patents Ltd Spiral antenna
EP0432972B1 (de) * 1989-12-12 1993-06-23 British Aerospace Public Limited Company Verlängerung des Triebwerkträgers eines Flugzeugflügels zur Verminderung des aerodynamischen Verlustes
US5170175A (en) * 1991-08-23 1992-12-08 Motorola, Inc. Thin film resistive loading for antennas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1058339A1 (de) * 1999-05-21 2000-12-06 Kabushiki Kaisha Toyota Chuo Kenkyusho Streifenleiterantenne
US6424298B1 (en) 1999-05-21 2002-07-23 Kabushiki Kaisha Toyota Chuo Kenkyusho Microstrip array antenna
CN114388996A (zh) * 2020-10-22 2022-04-22 上海天马微电子有限公司 液晶移相器及其制作方法、液晶天线
CN114388996B (zh) * 2020-10-22 2023-04-07 上海天马微电子有限公司 液晶移相器及其制作方法、液晶天线

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