GB926879A - Phase directional coupler - Google Patents
Phase directional couplerInfo
- Publication number
- GB926879A GB926879A GB1619359A GB1619359A GB926879A GB 926879 A GB926879 A GB 926879A GB 1619359 A GB1619359 A GB 1619359A GB 1619359 A GB1619359 A GB 1619359A GB 926879 A GB926879 A GB 926879A
- Authority
- GB
- United Kingdom
- Prior art keywords
- waveguide
- impedance
- frequency
- slot
- directional coupler
- 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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
926,879. Directional couplers. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. May 12, 1959 [May 13, 1958; Dec. 10, 1958], No. 16193/59. Class 40 (8). [Also in Group XXXVI] A directional coupler comprises two orthogonally disposed rectangular waveguides 1, 2 having a common broad-wall partition of quadrilateral form in which a rotatable slot is arranged on one of the diagonals. The slot may be dumb-bell shaped or elliptical in form and is capable of being revolved at high speeds. The coupler may be used as a measuring bridge for ascertaining the value of an impedance Zx. Power travelling towards this impedance and power reflected from it is coupled into the waveguide 2 and divides into two equal components which propagate in opposite directions. One end of the waveguide 2 is terminated by a matched load 4 and the other by a square law detector connected to measuring circuitry (see Group XXXVI). A frequency-dependent attenuator 5 is included in the waveguide 2 to compensate the variation of the coupling coefficient with frequency.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1309558 | 1958-05-13 | ||
| JP3528758 | 1958-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB926879A true GB926879A (en) | 1963-05-22 |
Family
ID=26348823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1619359A Expired GB926879A (en) | 1958-05-13 | 1959-05-12 | Phase directional coupler |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1115798B (en) |
| GB (1) | GB926879A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1296257B (en) * | 1962-11-15 | 1969-05-29 | Nippon Telegraph & Telephone | Reflection factor measurement circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE476281A (en) * | 1940-08-17 | |||
| US2478317A (en) * | 1945-07-09 | 1949-08-09 | Edward M Purcell | Directional coupler |
| BE477498A (en) * | 1946-09-10 |
-
1959
- 1959-05-12 GB GB1619359A patent/GB926879A/en not_active Expired
- 1959-05-12 DE DEN16707A patent/DE1115798B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1115798B (en) | 1961-10-26 |
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