GB1051038A - - Google Patents
Info
- Publication number
- GB1051038A GB1051038A GB1051038DA GB1051038A GB 1051038 A GB1051038 A GB 1051038A GB 1051038D A GB1051038D A GB 1051038DA GB 1051038 A GB1051038 A GB 1051038A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- array
- circuit
- arrays
- input
- 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.)
- Active
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
- H01Q3/44—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
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
-
- 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
- H01Q3/30—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 varying the relative phase between the radiating elements of an array
- H01Q3/34—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 varying the relative phase between the radiating elements of an array by electrical means
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1,051,038. Aerials; pulse radar. MITSUBISHI DENKI KABUSHIKI-KAISHA. May 28, 1963 [May 28, 1962], No. 21230/63. Headings H4A and H4D. An aerial system comprises at least two arrays each of which is characterized by having its elements disposed at intervals greater than one half wavelength and by having circuit means for introducing different predetermined phase differences between its elements, there being means for combining the said arrays through the said circuit means. Each array has a multilobed directional radiation pattern which is unique in the angular interval between lobes, and the effect of the predetermined phase differences between its elements is to cause a preselected lobe to coincide in direction with a pre-selected lobe of the pattern of each other array. As described, two arrays 10, 20, Fig. 1, comprise elements 11, 12 and 21, 22, respectively with spacings d 1 and d 2 , respectively, where d 1 and d 2 are each greater than a half wavelength. Circuit means 30a, 30b, 30c, 30d are provided in parallel for the array 10, and circuit means 40a, 40b, 40c, 40d in parallel for the array 20 and each pair, for example 30b and 40b, corresponds to coincidence in a particular direction, different from those for other pairs, of the preselected lobes of the arrays. Following the said circuit means are hybrid circuits, such as 50a, 60a for coupling the element pairs 11, 12 and 21, 22 to feeders from duploxers 70a, 80a. Each pair of duplexers is supplied by a transmitter, such as 90a, and their received powers are taken through a coincidence gate 100a and a switching circuit 120a to the input a of a receiver. A power differential gate 110a is also connected to the outputs of the duplexers 70a, 80a and controls the switching circuit 120a. A signal such as a radar echo is only passed to input a when (i) the responses of arrays 10 and 20 are simultaneous (gate 100a operates) and (ii) they are equal (gate 110a operates) and the effects of spurious signals are thus reduced. In a second embodiment the arrays are fed through phasing circuit means which are connected in series instead of in parallel (Fig. 2, not shown). A third embodiment (Fig. 3, not shown) is similar to the first embodiment except that the elements 11 and 21 are incorporated into a single element 11, and it may be adapted for passive direction finding only by removal of the duplexers and the transmitters (Fig. 4, not shown). In a further modification of the third embodiment (Fig. 5, not shown) a single transmitter 90 with duplexer 70 is connected directly to the centre element 11 and in a yet further modification (Fig. 6, not shown) variable phase shifting means 34, 44 are in addition connected directly to the outer elements 12, 22. Another embodiment, largely similar to the third embodiment, is equipped with beam shaping means (Fig. 7, not shown). Each hybrid circuit, such as 50a, is equipped to yield the difference D between the inputs A and B of the two halves of its associated array as well as their sum C. Both of these outputs C and D are supplied as inputs E and F to a beam shaping circuit 140a which so functions as to yield the input E as an output G only when the input F is smaller than preselected valve P. The effect is stated to be a substantial sharpening of the resultant lobes (Fig. 9, not shown). In a modification, the input E of the beam shaping circuit 140a is supplied directly from the half of the associated array (Fig. 8, not shown). The beam shaping circuit may, alternatively, be of the kind which yields an output G proportional to the quotient E/F of the two inputs only when the said quotient exceeds a preselected threshold value. A modification is also described in which phase differences between the elements of an array are obtained by means of mixers introduced into the paths of the signals from the appropriate elements, said mixers also receiving inputs of different phases from a common local oscillator (Fig. 10, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2191062 | 1962-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1051038A true GB1051038A (en) |
Family
ID=12068230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1051038D Active GB1051038A (en) | 1962-05-28 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3308465A (en) |
DE (2) | DE1441757A1 (en) |
GB (1) | GB1051038A (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3434139A (en) * | 1965-07-15 | 1969-03-18 | North American Rockwell | Frequency-controlled scanning monopulse antenna |
US3422438A (en) * | 1965-11-30 | 1969-01-14 | Arthur E Marston | Conjugate pair feed system for antenna array |
US3510871A (en) * | 1967-07-12 | 1970-05-05 | Mitsubishi Electric Corp | Radio detection apparatus |
US3518695A (en) * | 1967-09-07 | 1970-06-30 | Collins Radio Co | Antenna array multifrequency and beam steering control multiplex feed |
DE2727980A1 (en) * | 1977-06-22 | 1979-01-18 | Licentia Gmbh | Interferometric direction finding aerial array - has adjacent aerials from both groups coupled by directional couplers |
FR2511196A1 (en) * | 1981-08-07 | 1983-02-11 | Thomson Csf | MAIN AND AUXILIARY ANTENNA ASSEMBLY WITH ELECTRONIC SCAN AND RADAR COMPRISING SUCH AN ASSEMBLY |
US4724441A (en) * | 1986-05-23 | 1988-02-09 | Ball Corporation | Transmit/receive module for phased array antenna system |
US4721960A (en) * | 1986-07-15 | 1988-01-26 | Canadian Marconi Company | Beam forming antenna system |
US5745084A (en) * | 1994-06-17 | 1998-04-28 | Lusignan; Bruce B. | Very small aperture terminal & antenna for use therein |
TW274170B (en) * | 1994-06-17 | 1996-04-11 | Terrastar Inc | Satellite communication system, receiving antenna & components for use therein |
WO2023245274A1 (en) * | 2022-06-22 | 2023-12-28 | Huawei Technologies Canada Co., Ltd. | Tightly-coupled antenna array and method thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2245660A (en) * | 1938-10-12 | 1941-06-17 | Bell Telephone Labor Inc | Radio system |
US3255450A (en) * | 1960-06-15 | 1966-06-07 | Sanders Associates Inc | Multiple beam antenna system employing multiple directional couplers in the leadin |
-
0
- GB GB1051038D patent/GB1051038A/en active Active
-
1963
- 1963-05-27 DE DE19631441757 patent/DE1441757A1/en active Pending
- 1963-05-27 DE DE1791252A patent/DE1791252C3/en not_active Expired
- 1963-05-27 US US283287A patent/US3308465A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3308465A (en) | 1967-03-07 |
DE1791252A1 (en) | 1972-04-20 |
DE1441757A1 (en) | 1968-10-31 |
DE1791252B2 (en) | 1973-08-16 |
DE1791252C3 (en) | 1974-03-14 |
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