WO1990005391A1 - Antenne a reseau d'elements a phase variable - Google Patents

Antenne a reseau d'elements a phase variable Download PDF

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Publication number
WO1990005391A1
WO1990005391A1 PCT/JP1989/001120 JP8901120W WO9005391A1 WO 1990005391 A1 WO1990005391 A1 WO 1990005391A1 JP 8901120 W JP8901120 W JP 8901120W WO 9005391 A1 WO9005391 A1 WO 9005391A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
array antenna
antenna
phase
signal
Prior art date
Application number
PCT/JP1989/001120
Other languages
English (en)
Japanese (ja)
Inventor
Toshikiyo Hirata
Yujiro Taguchi
Tomoyuki Watanabe
Original Assignee
Toyo Communication Equipment Co., Ltd.
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 JP27583188A external-priority patent/JPH02122701A/ja
Priority claimed from JP28015888A external-priority patent/JPH02126703A/ja
Application filed by Toyo Communication Equipment Co., Ltd. filed Critical Toyo Communication Equipment Co., Ltd.
Publication of WO1990005391A1 publication Critical patent/WO1990005391A1/fr

Links

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
    • H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/267—Phased-array testing or checking devices

Definitions

  • the present invention relates to a fused array antenna, and more particularly, to the fact that, when one of a large number of feed systems to an antenna element is damaged, its influence extends to other systems.
  • the present invention relates to the configuration and control of a fused-array antenna in which the desired performance is obtained by using the remaining system.
  • An array antenna has various functions that cannot be obtained by a single element by arranging a plurality of antenna elements and exciting all or some of the elements. Therefore, various types of array antennas have been conventionally put into practical use.
  • those that arbitrarily control the radiation beam direction and pattern by electrically changing the phase or electric power of the signal supplied to each antenna element are generally called a fused array antenna, and in particular, through an artificial satellite.
  • Micro-strip type fused-array antennas are frequently used for such wireless communication antennas.
  • phased and array antennas are, for example, As shown in FIG.
  • reference numeral 1 denotes an entire phased-array antenna, in which a plurality of antenna elements A 1, A 2,... An arranged at predetermined intervals and a phase shifter (Phase shifter) 1 connected to each of them. , 2, and a distributor DIV (Divider).
  • phase shifters 1, 2, ⁇ , ⁇ have respective phase shift amounts controlled by a signal from a controller C0NT (not shown), and the phase shifters 1, 2,.
  • a phase transition is given and applied to each of the antenna elements A l, 2,--• An, or a similar phase transition is given to the signals induced by these antenna elements and collected in the distributor DIV and synthesized.
  • One signal is created, and this signal is connected to the transmitter TX and the receiver RX via a duplexer as shown in the figure, for example.
  • control of the power distribution ratio of the divider DIV of the phased-array antenna or the control of the phase in the phase shifters 1, 2,..., ⁇ ⁇ is performed by using a switching element such as a PI diode or the like. It is common to provide a variable reactance element and change the control voltage to each, or to change the combination of elements to be switched.
  • a semiconductor element such as a PI diode has a relatively small maximum allowable heat loss, and is likely to be broken when power exceeding a specified level is applied.
  • the passing power or heat loss generation in each control element is kept within the rating, if any of a large number of phase shifters, splitters and antenna elements, or any of the cables connecting them, would cause a failure.
  • Most or part of the power supplied from the distributor to the affected system is reflected from the affected area and redistributed to other non-affected systems, and depending on the number of faulted systems, There is a risk that the power supplied to the system will increase significantly, exceeding the allowable rating and destroying the elements of the non-damaging system.
  • the input / output impedance matching of each circuit is maintained only when there is no damage to all systems, but if any one of the systems causes damage, it will be affected. In some cases, the impedance matching status of other systems cannot be maintained.
  • An object of the present invention is to provide a fused array antenna capable of preventing the damage from affecting the non-disturbed system without impairing the function.
  • the fused-array antenna according to the present invention is provided with a means for detecting the presence or absence of a failure in a required portion of each block, and based on the result obtained by the means, the I! Prevent the spread of power to other systems by shutting off the power supplied to the affected system or dissipating the power to be supplied to the damaged system with the specified terminating resistor. . Also, based on the above results, the phase shifters or Zs and the distributors of each system are controlled to determine the respective control amounts.
  • a storage means which stores in advance the combinations of the P-harmed ones and the optimum ifilj control algorithm for each of them is provided, and a required control signal is selected from the result of the detection means and the contents of the storage means.
  • control signal setting algorithms are stored as programs
  • an optimal control signal may be created by executing this program when a damage occurs.
  • the first HI is a block diagram for explaining a first basic concept of the present invention
  • FIGS. 2 and 4 are diagrams showing an example of a means for detecting the damage of a phase shifter
  • FIG. 3 is a diagram of a switch. III road diagram showing an example
  • FIG. 5 is a block diagram for explaining a second basic concept of the present invention
  • FIG. 6 is a block diagram showing an example of a control device of a phased array antenna according to the present invention.
  • 7 (a) and (b) are block diagrams showing an example of a phase shift switching device
  • FIG. 8 is a block diagram for explaining an example of phase control of the present invention
  • FIG. 9 is a conventional fused array antenna Block showing FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • phased array antenna according to the present invention will be described.
  • FIG. 1 is a block diagram for explaining a first basic concept of the present invention.
  • a l, A 2,... -A n and ⁇ 1, 2 .--- ⁇ n, DIV represent a plurality of antenna elements and a phase shifter added to each of them, as in FIG.
  • failure detection circuits DET 1, DET 2,--• DET ⁇ are further added to the input / output terminals of the phase shifters ⁇ 1, 4> 2,.
  • Switch SW1, SW2, ⁇ ⁇ 'SWn and terminating resistor between phaser and distributor! , R,... R are provided to open and close each switch SW based on the output of the fault detection circuit DET.
  • the details of the failure detection circuit DET and the switch SW will be described later, but if a failure occurs in any of the phase shifters, a signal is output from the failure detection circuit DET of the relevant system, and the corresponding switch is connected. Activate the SW and supply the power supplied from the distributor to the phase shifter to the terminating resistor R. As a result, the supply power of the failed phase shifter system is cut off, and the output terminal of the distributor of the system is terminated with a specified impedance resistance, so that the phase shifter is generated. Obstacle The harm does not affect other systems and the impedance is not disturbed.
  • FIG. 2 is a diagram showing an embodiment of the fault detection circuit DET.
  • the input and output of the phase shifter have a slight gap between the strip line lines IN and OUT.
  • Striplines SL in and SL out of the required length are provided in parallel, and the signal currents induced in the strip lines S in and S out are die diodes D1, D2, capacitors, and C2.
  • the comparator COM detects the magnitude relationship between the two.
  • a coaxial relay is used as the switch SW, it can be easily implemented.
  • a circuit as shown in FIG. 3 is used.
  • 11 is an input terminal of the switch SW
  • A is a circuit through which a high-frequency current flows during normal operation
  • B is a circuit through which a high-frequency current flows when a failure occurs in the antenna system.
  • reference numeral 12 denotes a ⁇ / 4 transmission line, which is connected to output terminal 15 via capacitor 13 and capacitor 14. ing.
  • a diode 16, a coil 17 and a diode 18 are connected in parallel between the capacitors 13 and 14, and a bias based on the output of the fault detection circuit DET (not shown) is connected to the coil 17. It is configured to flow current.
  • circuit B has the same configuration as circuit A, but terminal «t R is connected to the output end of circuit B
  • the fault detection circuit DET is not limited to the above-described method, and various types can be considered.
  • a means for detecting the ratio between the input signal power and the reflected power at the input end of the phase shifter, and when the ratio exceeds a predetermined value, may be determined as a failure. Yes. Also, if such a reflected power measuring means is provided at the input end of each antenna element, it is possible to detect the damage of the antenna element, and similarly, it may be provided at the input end of another block. Needless to say.
  • the controller CONT may be operated by the output of the fault detection circuit DET to control the transmitter TX, the switch SW, etc., or to display the fault location.
  • the configuration and control of the array antenna described above are designed so that when a fault occurs in the system, the fault does not affect other non-disaster systems, and this idea was further developed. Even if a failure occurs, a fused array is used to control the desired performance, that is, the directional pattern or beam sweep angle, etc., using the remaining non-falling system to satisfy the specified standard.
  • the configuration and control method of the antenna will be described in detail below.
  • FIG. 5 is a block diagram for explaining a second basic concept of the present invention.
  • a variable distributor VD IV is used as a distributor.Furthermore, failure detection circuits DET1, DET2,--DETn and a controller C0NT are provided at the input / output terminals of the phase shifter. It is characterized by having You. ⁇
  • the variable distributor VD IV has a built-in weighting circuit
  • Control device A function to arbitrarily control the power supplied to each system by the C0NT output.
  • the controller C0NT monitors the signals from the fault detection circuits DET1, DET2,--DETn, and when a damage detection signal is output from any one of the circuits, the phase shifter based on the result.
  • control signal to n or Z and the variable distributor VD IV is changed to stop supplying power to the faulty system, and to distribute the power to the non-faulty system and the respective phase relations again.
  • This resetting is determined based on, for example, the number of non-faulty systems and the position of the antenna array, and control is performed so as to be in the best state according to the situation, and the desired performance, that is, the directivity pattern or The beam sweep angle and the gain in each direction are set so as to satisfy the predetermined standards.
  • the remaining system excluding the failed system is operated, and the function as an antenna can be secured to some extent, so that communication is not lost.
  • control device C0NT Next, a specific example of the control device C0NT will be described.
  • Fig. 6 is a block diagram showing a part of the internal configuration of the control unit C0NT. The presence / absence of a failure and its location are determined based on signals from each failure detection circuit DET, and the information is determined.
  • Matrix that converts and outputs digital signals
  • SIG for generating a control signal to the distributor DIV.
  • the storage circuit ROM stores a control signal to be output in response to a fault condition of all systems, for example, a code (bit string) indicating the fault condition as an address.
  • control signal should be used to determine the number of faulty systems and their combinations in advance, and to consider how to control the non-II damaged systems at that time to make them more functional. Determined by
  • This control signal also increases or decreases the phase shift of the phase shifter in the non-faulty system! ) It changes the signal and / or the power distribution ratio of the distributor.
  • phase shifter or distributor differ depending on the phase shift circuit system and the distribution circuit system, but the phase shifter system changes the reflection coefficient of the die as shown in Fig. 7 (a).
  • a program in which the presence or absence of various damages and their locations are input to determine a re-control determination procedure may be stored in a memory. That is, a sequence control program for reading information from a faulty system and determining how to control a non-faulty system as a result is stored in a memory circuit ROM, and this program is shown in the figure. It is executed by the omitted CPU and generates a control signal to be output each time.
  • the fault detection circuit DET may have a configuration as shown in FIGS. 3 and 4.
  • Fig. 8 shows an example of a fused-array antenna with eight antenna elements.For example, if the directivity is formed from the reference direction to the 35 'direction, all antennas and phase shifters are normal. In this case, as shown in the top row of the table below, the phase shifter ⁇ 1 is used as the reference (phase shift 0 '), and the signal is controlled with a difference of about 103.2 degrees from phase shifter 2 in order.
  • the P-harmed portion is detected using the above-described means.
  • the phase shifter ⁇ 2 is set to 0 '(reference) as shown in the second row of Table 1 and -Control continuously.
  • the directional characteristics are improved as compared with a case where no change is made to the phase shift control, and furthermore, a theoretical directional formation can be achieved.
  • phase shifters 0 1 and 2 go down, the same phase control is performed for the other systems except those as shown in the third row of Table 1 above.
  • phase shifter other than the two phase shifters when a phase shifter other than the two phase shifters is damaged, for example, when a phase shifter ⁇ 3 or ⁇ 6 is damaged, it is not necessary to change the phases of the other phase shifters.
  • phase shift control unit of the phase shifter has been mentioned.However, if the Fuse 'array antenna is designed to increase or decrease the power supplied to each system, it will respond to the damage situation. Resetting the weights of non-falling systems in advance may be effective in improving performance ⁇
  • this locating for example, locating a chip-off is known, and the locating may be performed by this method, and it is not necessary to limit to this method.
  • the input or output end of the phase shifter where the gap has occurred is forcibly set by a specified resistor or impedance element as shown in Fig. 1. To prevent impedance mismatch of the relevant part!
  • the phase control device or the distribution power of another phase shifter is changed according to the situation. Since the frequency is reset, the optimal control can be performed by the non-falling system, which has a remarkable effect in improving the performance of the phased array antenna.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Lorsqu'une panne se produit dans l'un quelconque des nombreux systèmes d'alimentation d'une antenne à réseau d'éléments à phase variable, la survenance de cette panne est détectée par un organe (DET) installé dans une partie importante de chacun des blocs, l'alimentation du système défectueux est interrompue par un organe commutateur (SW), et le courant d'alimentation est consommé par une résistance terminale spécifique (R) de sorte que les autres systèmes ne soient pas affectés par ladite panne. On effectue en outre une commande optimale grâce à la régulation de la puissance et de la phase de l'alimentation fournie aux systèmes présentant un fonctionnement normal.
PCT/JP1989/001120 1988-10-31 1989-10-31 Antenne a reseau d'elements a phase variable WO1990005391A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP27583188A JPH02122701A (ja) 1988-10-31 1988-10-31 フェーズド・アレイアンテナ
JP63/275831 1988-10-31
JP63/280158 1988-11-04
JP28015888A JPH02126703A (ja) 1988-11-04 1988-11-04 フェーズド・アレイアンテナ

Publications (1)

Publication Number Publication Date
WO1990005391A1 true WO1990005391A1 (fr) 1990-05-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1989/001120 WO1990005391A1 (fr) 1988-10-31 1989-10-31 Antenne a reseau d'elements a phase variable

Country Status (3)

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AU (1) AU4482789A (fr)
CA (1) CA2001922A1 (fr)
WO (1) WO1990005391A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56137708A (en) * 1980-03-31 1981-10-27 Mitsubishi Electric Corp Electronic control antenna
JPS5779702A (en) * 1980-11-04 1982-05-19 Nec Corp Phase synthesis antenna system
JPS5796277A (en) * 1980-12-08 1982-06-15 Mitsubishi Electric Corp Phased array radar
JPS6013603B2 (ja) * 1978-02-06 1985-04-08 ヘ−ゼルタイン コ−ポレ−シヨン 位相調整式のアレイアンテナ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013603B2 (ja) * 1978-02-06 1985-04-08 ヘ−ゼルタイン コ−ポレ−シヨン 位相調整式のアレイアンテナ
JPS56137708A (en) * 1980-03-31 1981-10-27 Mitsubishi Electric Corp Electronic control antenna
JPS5779702A (en) * 1980-11-04 1982-05-19 Nec Corp Phase synthesis antenna system
JPS5796277A (en) * 1980-12-08 1982-06-15 Mitsubishi Electric Corp Phased array radar

Also Published As

Publication number Publication date
AU4482789A (en) 1990-05-28
CA2001922A1 (fr) 1990-04-30

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