EP0660436B1 - Répartiteur de puissance pour signaux hyperfréquence - Google Patents
Répartiteur de puissance pour signaux hyperfréquence Download PDFInfo
- Publication number
- EP0660436B1 EP0660436B1 EP94402904A EP94402904A EP0660436B1 EP 0660436 B1 EP0660436 B1 EP 0660436B1 EP 94402904 A EP94402904 A EP 94402904A EP 94402904 A EP94402904 A EP 94402904A EP 0660436 B1 EP0660436 B1 EP 0660436B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outputs
- distributor
- inputs
- couplers
- elements
- 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.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 description 17
- 238000010276 construction Methods 0.000 description 11
- 206010033546 Pallor Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
Definitions
- the invention relates to a power distributor for microwave signals, including p signal inputs and n signal outputs (n and p being arbitrary) and a assembly of coupling elements connecting the p inputs to n outputs to distribute the signal strength input on the n outputs according to an amplitude law any orthogonal.
- Such a distributor is primarily intended for equip a multi-source active concept antenna or passive, for which we seek to minimize the losses of power.
- D1 DE-A-27 32 627 from Siemens, described on page 7 and figure 4 a distributor of power with n inputs and n outputs, with amplitudes which are likely to be equal because it uses Butler matrices as orthogonal elements of power each having n / 2 inputs and outputs (U1, U2, V1, V2).
- the second document D2 GB-A-1 559 974 from Marconi Ltd. shown in Figure 2 and described on page 2, lines 36 to 51, a distribution device with orthogonal elements of power each having n / 2 inputs and outputs (U1, U2, V1, V2).
- Figure 1 shows a power distributor of which the assembly of coupling elements is presented under the form of a Butler matrix with 8 inputs E1-E8 and 8 outputs S1-S8.
- the elementary couplers 1 are 3dB equiamplitude couplers.
- This matrix has phase shift elements that have a value multiple of +/- 45 °.
- Butler's matrix presents the disadvantage of being limited to the equiamplitude laws on a number of outputs equal to a power of 2.
- Figure 2 shows a Blass matrix having a any number of inputs E and outputs S (the number of entries being equal to or less than the number of exits). But this matrix induces power losses of the fact that the elementary couplers 1 of the row top of the matrix have an output connected to a adapted load.
- Figure 3 shows a modified Blass matrix for avoid loss of power.
- a matrix de Blass modified has the defect of being asymmetrical. Indeed, the number of elementary couplers 1 connecting a input E to output S varies depending on the position of entry and exit. It is then necessary to provide different line lengths depending on the paths followed by the input signals which complicates strongly the realization of the power distributor.
- the object of the invention is to remedy the disadvantages above by offering a simple distributor to realize and who is likely to distribute the power of input signals on the outputs according to an amplitude law any. If we choose an amplitude law having a large number of zero amplitudes, the distributor behaves as a switching matrix. If we choose a law evenness, the advantages of the invention compared to prior art (Butler's Matrix) is not provided.
- the invention relates to a distributor power for microwave signals according to claim 1 .
- Particular achievements of the invention for distributors p inputs, n outputs, are defined in claims 2 to 4.
- the invention relates to a distributor whose elements define a construction having a shape geometric which is repeated inside these elements by recurrence until obtaining elements in the form of orthogonal elementary couplers or simple divisors with achieve.
- Figure 1 shows a Butler matrix
- Figure 2 shows a Blass matrix
- Figure 3 shows a modified Blass matrix.
- Figure 4 shows a distributor with n inputs and n outputs, n even.
- Figure 5 shows a distributor with n inputs and n outputs, n odd.
- Figure 6 illustrates the technique of building the distributor of figure 4 or 5.
- Figure 7 shows a distributor with 3 inputs and 3 exits.
- Figure 8 shows a distributor with 4 inputs and 4 exits.
- Figure 9 shows the general structure of a distributor with 8 inputs and 8 outputs.
- Figure 10 shows the detailed structure of a distributor with 8 inputs and 8 outputs.
- Figure 12 illustrates the technique of building the distributor of figure 11.
- Figure 13 shows a distributor with 3 inputs and 29 exits in a first level of construction.
- Figure 14 shows the distributor of Figure 13 in a second level of construction.
- Figure 15 shows the distributor of Figure 13 in a third level of construction.
- Figure 16 shows a distributor with p inputs and n outputs, n even and n> p> n / 2.
- Figure 17 shows a distributor with p inputs and n outputs, n odd and n> p> n / 2.
- Figure 18 illustrates the construction technique of the distributor of figure 16 or 17.
- the power distributor according to the invention includes a set interface of couplers having a substantially position central in the distributor in relation to the inputs and sories of the dispatcher.
- This set of couplers receives input signals on cross-linked links and / or provides signals on crossed links.
- the brewing of input and / or output connections of the interface assembly of couplers defines a certain symmetry of construction of the dispatcher in relation to an axis defined by management signal propagation in the splitter. AT inside this interface module set, the signals that enter it, travel an identical number of couplers to the nearest unit.
- the power distributor a n signal inputs and n signal outputs, n being even.
- n inputs and n outputs are interconnected by an assembly of coupling elements.
- This assembly consists of n / 2 couplers C1-Cn / 2 each having two orthogonal inputs and two outputs. These couplers are conventional. It also consists of four square orthogonal distributor elements V1, U1, V2, U2 which have each n / 2 inputs and n / 2 n / 2 outputs.
- the inputs E1-En / 2, E'1-E'n / 2 of the distributor elements V1, V2 are the inputs of the distributor and the outputs S1-Sn / 2, S'1-S'n / 2 of the distributor elements U1, U2 are the outputs of this same distributor.
- the outputs SV1.1-SV1.n / 2 of the distributor element V1 are connected respectively to the first inputs of n / 2 C1-Cn / 2 couplers.
- the SV2.1-SV2.n / 2 outputs of the distributor element V2 are connected respectively to the second inputs of n / 2 C1-Cn / 2 couplers.
- the inputs EU1.1-EU1.n / 2 of the distributor element U1 are connected respectively to the first outputs of n / 2 C1-Cn / 2 couplers.
- the entries EU2.1-EU2.n / 2 of the element splitter U2 are connected respectively to the seconds outputs of the n / 2 couplers C1-Cn / 2.
- the distributors in Figures 4 and 5 are square.
- the distributor elements V1, V2, U1, U2 connected to couplers C1-Cn / 2 or C1-C (n-1) / 2 define a geometric shape, that is to say a wiring diagram.
- This geometric shape is repeated, by recurrence, at the interior of each distributor element as illustrated in Figure 6 as long as the number of inputs or outputs of distributor elements V1, V2, U1, U2, at the deepest level recurrence, is greater than 2.
- At the last level of recurrence we get two-way elements inputs and two outputs, i.e. couplers easy to perform. You have to understand that the manufacturing the distributor goes first through the determination of the wiring diagram corresponding to the level deepest recurrence.
- FIG. 7 shows a 3-way power distributor inputs E1, E'1-E'2 and 3 outputs S1, S'1-S'2.
- the distributor elements V1, U1 are only phase shifters.
- Figure 8 shows a 4-way power distributor inputs E1-E2, E'1-E'2 and with 4 outputs S1-S2, S'1-S'2.
- the four distributing elements V1, V2, U1, U2 are elementary couplers with 2 inputs and 2 simple outputs with achieve.
- FIG 9 shows an 8-way power distributor inputs E1-E4, E'1-E'4 and 8 outputs S1-S4, S'1-S'4.
- This distributor consists of 4 distributor elements V1, V2, U1, U2 and 4 couplers.
- Each distributor element, for example V1 itself consists of 4 elements distributor V1 (V1), V2 (V1), U1 (V1), U2 (V1) connected between them by two couplers C1 (V1), C2 (V1) as visible on the figure 10.
- the distributor according to the invention is suitable for distribute the power of n input signals over n outputs, n any, according to a law of any amplitude with a minimum number of couplers insofar as each coupler is adjusted for this purpose.
- Each C1-Cp coupler has one of its two inputs ended on a load and therefore has only one only effective entry.
- the p inputs E1-Ep of the distributor element V correspond to the dispatcher inputs.
- the element distributor V also has p outputs SV1-SVp.
- the distributor elements U1, U2 each have p inputs EU1.1-EU1.p and EU2.1-EU2.p respectively. They each have n / 2 outputs S1-Sn / 2 and S'1-S'n / 2 respectively.
- the exits S1-Sn / 2, S'1-S'n / 2 of the two distributor elements U1, U2 correspond respectively to the outputs of the distributor.
- the outputs SV1-SVp of the distributor element V are respectively connected to the effective inputs of the p C1-Cp couplers.
- the inputs EU1.1-EU1.p of the distributor element U1 are connected respectively to the first outputs of the p couplers and element EU2.1-EU2.
- p inputs splitter U2 are connected respectively to the seconds outputs of the p couplers.
- the distributor is identical to that of figure 11 except that the distributor element U1 a (n-1) / 2 outputs S1-S (n-1) / 2 and the distributor element U2 a (n + 1) / 2 outputs S'1-S '(n + 1) / 2 as shown in dotted lines in Figure 11.
- V (U1), U1 (U1), U2 (U1) denote the elements dispatcher that make up, at a first level of recurrence, the distributor element U1 of FIG. 11. From even, V (U2), U1 (U2), U2 (U2) denote the elements dispatcher that make up, at a first level of recurrence, the distributor element U2 of figure 11.
- Figure 13 provides a better understanding of how the final structure of the distributor having p inputs and n outputs is determined.
- This figure shows a power distributor with 3 inputs E1-E3 and 29 outputs S1 - S14; S'1 - S'15 and comprising three distributor elements V, U1, U2.
- Figure 14 shows the same dispatcher for a first level of recurrence.
- the distribution elements U1 and U2 have been replaced by distribution elements V (U1), U1 (U1), U2 (U1), V (U2), U1 (U2), U2 (U2).
- Figure 15 shows the same distributor as Figure 14 for a second level of recurrence.
- the distributor elements U1 (U1), U2 (U1), U2 (U2) and U2 (U2) are replaced by distributor elements V (U1 (U1)) ... U2 (U2 (U2).
- the final structure of the distributor is such that the distribution elements U1 (U1 (U1)) ... U2 (U2 (U2)) are replaced by distribution elements in accordance with Figures 7 (3x3 distribution element) or 8 (3x4 distribution element).
- Such a distributor is adapted to a law of any amplitude for a minimum number of couplers.
- FIG 16 shows a distributor at p inputs and n outputs with n> p> n / 2 and n even.
- the distributor elements V1 and U1 each have n / 2 inputs and n / 2 outputs.
- the distributor element U2 an / 2 inputs and n / 2 outputs.
- the inputs E1-En / 2 and the inputs E'1-E'r of the distributor elements V1 and V2 are the inputs of the dispatcher.
- S1-Sn / 2 outputs and S'1-S'n / 2 outputs distributor elements U1 and U2 are the outputs of the distributor.
- the outputs of the distributor elements V1, V2 and the inputs of the distributor elements U1, U2 are connected to the inputs and outputs of couplers C1-Cn / 2 as described above for Figure 4.
- the distributor elements V1 and U1 each have (n-1) / 2 inputs and (n-1) / 2 outputs.
- the distributor element U2 has (n + 1) / 2 inputs and (n + 1) / 2 outputs.
- the (n-1) / 2 inputs E1-E (n-1) / 2 of the element distributor V1 and r inputs E'1-E'r of the distributor element V2 are the inputs of the dispatcher.
- the (n-1) / 2 outputs S1-S (n-1) / 2 of the distributor element U1 and the (n + 1) / 2 outputs S'1-S '(n + 1) / 2 of the distributor element U2 are the outputs of the dispatcher.
- the outputs of the distributor elements V1, V2 and the inputs of the distributor elements U1, U2 are connected to the inputs and outputs of couplers C1-C (n-1) / 2 as described above for Figure 5.
- distribution elements V1, U1, V2, U2 of the Figures 16 and 17 themselves consist of elements splitter by repeating a geometric shape like described below.
- Each distributor element V1, U1 consists of elements distributor V1, U1, V2, U2 as described above with reference in FIG. 4 in the case of a distributor with n inputs and n outings with n even.
- the distributor element U2 is composed distributor elements V1, U1, V2, U2 as described above in reference to FIG. 5 in the case of a distributor with n inputs and n outputs with odd n.
- FIG 18 details the recurrence levels for construction of a distributor with 45 inputs and 54 exits.
- the distributor is made up of 4 elements distributor V1 (27 outputs, 27 inputs), U1 (27 outputs, 27 inputs), V2 (27 outputs, 18 inputs) and U2 (27 outputs, 27 entries).
- the distributor element V2 itself consists of four distribution elements U1 (13,13), U2 (14,14), V1 (13.13) and V2 (14.5) and so on. It is understood that the distributor elements V1, U1, U2 are made up of couplers like those shown in Figures 4 and 5.
- the structure of the distributor is easily simplified in the following cases.
- np 1, p being the number of inputs and n the number of outputs of the distributor, it suffices to eliminate any input of the distributor designed as described for FIG. 4 or 5, that is to say to finish it on a charge.
- the couplers must of course be adjusted in function of the chosen amplitude law.
- phase shifters at each connection or link between two elementary couplers. These phase shifters can be fixed or variable. For a distributor with n inputs and n outputs, there are n (n + 1) / 2 phase shifters to be provided. For a distributor with p inputs and n outputs, there are np-p (p-1) / 2 phase shifters to be provided.
- Couplers with coupling values close to one or zero are replaced by two bonds direct crossed or not or by a direct link and a load which further simplifies the structure of the power distributor. It is understood that the number of suppressed couplers is all the more that one accepts a major error on the approximation of the law distribution amplitude. Once the simplification performed, the coupling and phase shift values may be easily readjusted according to the use of the distributor. Therefore, for a given precision of the distribution law, it is possible to increase the number of couplers to be eliminated which allows to eliminate more couplers difficult to manufacture.
- this coupler can be replaced by a divider power which simplifies the realization of the distributor.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
Claims (6)
- Un répartiteur de puissance pour signaux hyperfréquence, comprenant p entrées (E) de signaux et n sorties (S) de signaux où 2<=p<=n/2 et n pair supérieur ou égal à 4, et un assemblage d'éléments de couplage reliant les p entrées aux n sorties en vue de répartir la puissance des signaux d'entrée sur les n sorties selon une loi d'amplitude, caractérisé en ce que l'assemblage d'éléments de couplage est constitué par p coupleurs élémentaires (C1-Cp) ayant chacun une entrée et deux sorties, un premier (V) élément répartiteur orthogonal de puissance ayant p entrées et p sorties, un second (U1) et un troisième (U2) éléments répartiteur orthogonal de puissance ayant chacun p entrées et n/2 sorties, les entrées (E1-Ep) du premier (V) élément répartiteur correspondant respectivement aux entrées du répartiteur, les sorties (S1-Sn/2;S'1-S'n/2) du second et troisième éléments répartiteur correspondant respectivement aux sorties du répartiteur, les sorties (SV1-SVp) du premier (V) élément répartiteur étant connectées respectivement aux entrées des coupleurs (C1-Cp), les entrées (EU1.1-EU1.p) du second (U1) élément répartiteur étant connectées respectivement aux premières sorties des coupleurs (C1-Cp) et les entrées (EU2.1-EU2.p) du troisième (U2) élément répartiteur étant connectées respectivement aux secondes sorties des coupleurs (C1-Cp).
- Un répartiteur de puissance pour signaux hyperfréquence, comprenant p entrées (E) de signaux et n sorties (S) de signaux où 2<=p<=(n-1) /2 et n impair supérieur ou égal à 5, et un assemblage d'éléments de couplage reliant les p entrées aux n sorties en vue de répartir la puissance des signaux d'entrée sur les n sorties selon une loi d'amplitude, caractérisé en ce que l'assemblage d'éléments de couplage est constitué par p coupleurs (C1-Cp) ayant chacun une entrée et deux sorties orthogonales, un premier (V) élément répartiteur orthogonal de puissance ayant p entrées et p sorties, un second (U1) et un troisième (U2) éléments répartiteur orthogonal de puissance, le second (U1) élément répartiteur ayant p entrées et (n-1)/2 sorties, le troisième (U2) élément répartiteur ayant p entrées et (n+1)/2 sorties, les entrées (E1-Ep) du premier (V) élément répartiteur correspondant respectivement aux entrées du répartiteur, les sorties (S1-S(n-1)/2;S'1-S' (n+1)/2) du second (U1) et troisième (U2) éléments répartiteur correspondant respectivement aux sorties du répartiteur, les sorties (SV1-SVp) du premier (V) élément répartiteur étant connectées respectivement aux entrées des coupleurs (C1-Cp), les entrées (EU1.1-EU1.p) du second (U1) élément répartiteur étant connectées respectivement aux premières sorties des coupleurs (C1-Cp) et les entrées (EU2.1-EU2.p) du troisième (U2) élément répartiteur étant connectées respectivement aux secondes sorties des coupleurs (C1-Cp).
- Un répartiteur de puissance pour signaux hyperfréquence, comprenant p entrées (E) de signaux et n sorties (S) de signaux avec n>p>n/2 et n pair supérieur ou égal à 4, et un assemblage d'éléments de couplage reliant les p entrées aux n sorties en vue de répartir la puissance des signaux d'entrée sur les n sorties selon une loi d'amplitude, caractérisé en ce que l'assemblage d'éléments de couplage est constitué par n/2 coupleurs élémentaires (C1-Cn/2) ayant chacun deux entrées et deux sorties, un second (U1) et un quatrième (U2) éléments répartiteur orthogonal de puissance ayant chacun n/2 entrées et n/2 sorties, un premier (V1) et un troisième (V2) éléments répartiteur orthogonal de puissance ayant respectivement r1,r2 entrées (r1+r2=p) et n/2 sorties, les entrées (E1-Er1;E'1-E'r2) du premier (V1) et troisième (V2) éléments répartiteur correspondant respectivement aux entrées du répartiteur, les sorties (S1-Sn/2;S'1-S'n/2) du second (U1) et quatrième (U2) éléments répartiteur correspondant respectivement aux sorties du répartiteur, les sorties (SV1.1-SV1.n/2) du premier (V1) élément répartiteur étant connectées respectivement aux premières entrées des coupleurs (C1-Cn/2) et les sorties (SV2.1-SV2.n/2) du troisième (V2) élément répartiteur étant connectées respectivement aux secondes entrées des coupleurs (C1-Cn/2), les entrées (EU1.1-EU1.n/2) du troisième (U1) élément répartiteur étant connectées respectivement aux premières sorties des coupleurs (C1-Cn/2) et les entrées (EU2.1-EU2.n/2) du quatrième élément répartiteur (U2) étant connectées respectivement aux secondes sorties des coupleurs (C1-Cn/2).
- Un répartiteur de puissance pour signaux hyperfréquence, comprenant p entrées (E) de signaux et n sorties (S) de signaux avec n>p>(n-1)/2 et n impair supérieur ou égal à 3, et un assemblage d'éléments de couplage reliant les p entrées aux n sorties en vue de répartir la puissance des signaux d'entrée sur les n sorties selon une loi d'amplitude, caractérisé en ce que l'assemblage d'éléments de couplage est constitué par (n-1)/2 coupleurs élémentaires (C1-C(n-1)/2) ayant chacun deux entrées et deux sorties, un premier (V1) et un second (U1) éléments répartiteur orthogonal de puissance ayant respectivement r1,(n-1)/2 entrées (avec r1<=(n-1)/2) et (n-1)/2 sorties, un troisième (V2) et un quatrième (U2) éléments répartiteur orthogonal de puissance, le troisième (V2) élément répartiteur ayant r2 entrées (avec r1+r2=p) et (n+1)/2 sorties, le quatrième (U2) élément répartiteur (U2) ayant (n+1)/2 entrées et (n+1)/2 sorties, les entrées (E1-Er1/2;E'1-E'r2) du premier (V1) et troisième (V2) éléments répartiteur correspondant respectivement aux entrées du répartiteur, les sorties (S1-S(n-1)/2;S'1-S' (n+1)/2) du second (U1) et quatrième (U2) éléments répartiteur correspondant respectivement aux sorties du répartiteur, les sorties (SV1.1-SV1.(n-1)/2) du premier (V1) élément répartiteur étant connectées respectivement aux premières entrées des coupleurs (C1-Cn/2) et les sorties (SV2.1-SV2.(n-1)/2) sauf une (SV2.(n+1)/2) du troisième (V2) élément répartiteur étant connectées respectivement aux secondes entrées des coupleurs (C1-Cn/2), les entrées (EU1.1-EU1.(n-1)/2) du second (U1) élément répartiteur étant connectées respectivement aux premières sorties des coupleurs (C1-C(n-1)/2) et les entrées (EU2.1-EU2.(n-1)/2) sauf une (EU2.(n+1)/2) du quatrième (U2) élément répartiteur étant connectées respectivement aux secondes sorties des coupleurs (C1-C(n-1)/2),la sortie (SV2.(n+1)/2) non connectée à un coupleur du troisième (V2) élément répartiteur étant connectée directement à l'entrée (EU2.(n+1)/2) non connectée à un coupleur du quatrième (U2) élément répartiteur.
- Le répartiteur selon l'une quelconque des revendications précédentes dans lequel chaque élément répartiteur est remplacé par l'un des répartiteurs selon les revendications 1 à 4 .
- Le répartiteur selon l'une quelconque des revendications précédentes, dans lequel certains coupleurs sont remplacés par des diviseurs ou des lignes parallèles ou des lignes croisées.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9315299A FR2714215B1 (fr) | 1993-12-20 | 1993-12-20 | Répartiteur de puissance pour signaux hyperfréquence. |
| FR9315299 | 1993-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0660436A1 EP0660436A1 (fr) | 1995-06-28 |
| EP0660436B1 true EP0660436B1 (fr) | 1999-11-10 |
Family
ID=9454115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94402904A Expired - Lifetime EP0660436B1 (fr) | 1993-12-20 | 1994-12-16 | Répartiteur de puissance pour signaux hyperfréquence |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5673010A (fr) |
| EP (1) | EP0660436B1 (fr) |
| AU (1) | AU689148B2 (fr) |
| DE (1) | DE69421600T2 (fr) |
| FR (1) | FR2714215B1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5748164A (en) | 1994-12-22 | 1998-05-05 | Displaytech, Inc. | Active matrix liquid crystal image generator |
| US5808800A (en) | 1994-12-22 | 1998-09-15 | Displaytech, Inc. | Optics arrangements including light source arrangements for an active matrix liquid crystal image generator |
| JP2009060225A (ja) | 2007-08-30 | 2009-03-19 | Fujitsu Ltd | Rf回線切り替え回路 |
| US10070181B2 (en) * | 2016-07-20 | 2018-09-04 | Microelectronics Technology, Inc. | Power splitter and satellite signal reception system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1559974A (en) * | 1976-09-16 | 1980-01-30 | Marconi Co Ltd | Electrical transmission system |
| DE2732627C3 (de) * | 1977-07-19 | 1980-04-17 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Kreisförmige phasengesteuerte Strahlergruppe |
| US4323863A (en) * | 1978-01-16 | 1982-04-06 | Rockwell International Corporation | N-Way power divider/combiner |
| US4231040A (en) * | 1978-12-11 | 1980-10-28 | Motorola, Inc. | Simultaneous multiple beam antenna array matrix and method thereof |
| JPS58107708A (ja) * | 1981-12-22 | 1983-06-27 | Toshiba Corp | マイクロ波電力合成回路 |
| US4638317A (en) * | 1984-06-19 | 1987-01-20 | Westinghouse Electric Corp. | Orthogonal beam forming network |
| US5105170A (en) * | 1989-07-15 | 1992-04-14 | British Aerospace Public Limited Company | Waveguide coupling networks |
-
1993
- 1993-12-20 FR FR9315299A patent/FR2714215B1/fr not_active Expired - Fee Related
-
1994
- 1994-12-05 AU AU80210/94A patent/AU689148B2/en not_active Ceased
- 1994-12-16 EP EP94402904A patent/EP0660436B1/fr not_active Expired - Lifetime
- 1994-12-16 DE DE69421600T patent/DE69421600T2/de not_active Expired - Fee Related
- 1994-12-19 US US08/358,361 patent/US5673010A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5673010A (en) | 1997-09-30 |
| DE69421600T2 (de) | 2000-05-11 |
| EP0660436A1 (fr) | 1995-06-28 |
| FR2714215B1 (fr) | 1996-01-19 |
| DE69421600D1 (de) | 1999-12-16 |
| AU8021094A (en) | 1995-06-29 |
| AU689148B2 (en) | 1998-03-26 |
| FR2714215A1 (fr) | 1995-06-23 |
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