GB1465541A - Microwave multiport circulators for radar applications - Google Patents
Microwave multiport circulators for radar applicationsInfo
- Publication number
- GB1465541A GB1465541A GB440474A GB440474A GB1465541A GB 1465541 A GB1465541 A GB 1465541A GB 440474 A GB440474 A GB 440474A GB 440474 A GB440474 A GB 440474A GB 1465541 A GB1465541 A GB 1465541A
- Authority
- GB
- United Kingdom
- Prior art keywords
- striplines
- magnetic field
- ports
- peripheral
- junction
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/38—Circulators
- H01P1/383—Junction circulators, e.g. Y-circulators
- H01P1/387—Strip line circulators
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Soft Magnetic Materials (AREA)
Abstract
1465541 Circulators SELENIA INDUSTRIE ELETTRONICHE ASSOCIATE SpA 30 Jan 1974 [31 Jan 1973] 04404/74 Heading H1W Anon-reciprocal multiport device, e.g. a circulator, makes use of peripheral propagation modes and a polarizing magnetic field which is non-uniform in the vicinity of the tapered matching sections of the ports. As described, a four-port circulator comprises a ferrite element 2, ground plane 3 and striplines A, B, C, D integral with and smoothly merging into a planar junction member 5. The path of the peripheral wave coupling ports B and C is shown by the line P, the other ports being similarly coupled in pairs. In order to match the peripheral waves to the TEM waves on the striplines, the intensity of the magnetic field varies from a maximum at the centre of the junction 5 to a minimum at the outer ends of the matching sections of the striplines. This is indicated by the non-uniform spacing of the magnetic contour lines 8 which indicate equal increments of magnetic field intensity. The required distribution may be obtained by means of a soft-iron element 6 located at the centre of the junction 8, or by decreasing the diameter of the permanent magnet 7 (see Fig. 5b, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT4800073A IT983049B (en) | 1973-01-31 | 1973-01-31 | IMPROVEMENT IN MULTIPLE MICROWAVE DOOR JUNCTIONS IN PARTICULAR FOR RADAR APPLICATIONS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1465541A true GB1465541A (en) | 1977-02-23 |
Family
ID=11263883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB440474A Expired GB1465541A (en) | 1973-01-31 | 1974-01-30 | Microwave multiport circulators for radar applications |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2403981A1 (en) |
| FR (1) | FR2216685B3 (en) |
| GB (1) | GB1465541A (en) |
| IT (1) | IT983049B (en) |
-
1973
- 1973-01-31 IT IT4800073A patent/IT983049B/en active
-
1974
- 1974-01-29 DE DE19742403981 patent/DE2403981A1/en not_active Withdrawn
- 1974-01-30 FR FR7403108A patent/FR2216685B3/fr not_active Expired
- 1974-01-30 GB GB440474A patent/GB1465541A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2216685A1 (en) | 1974-08-30 |
| DE2403981A1 (en) | 1974-09-05 |
| IT983049B (en) | 1974-10-31 |
| FR2216685B3 (en) | 1976-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |