GB1095002A - Microwave attenuation measurement - Google Patents
Microwave attenuation measurementInfo
- Publication number
- GB1095002A GB1095002A GB4154564A GB4154564A GB1095002A GB 1095002 A GB1095002 A GB 1095002A GB 4154564 A GB4154564 A GB 4154564A GB 4154564 A GB4154564 A GB 4154564A GB 1095002 A GB1095002 A GB 1095002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- test piece
- attenuation
- waveguide
- coupler
- determining
- 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
-
- 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
- G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
1,095,002. Measuring attenuation. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 5, 1966 [Oct. 12, 1964], No.41545/64. Heading G1U. In an apparatus for determining the attenuation produced by a test piece comprising a component part of an H. F. transmission line system 3 such as a waveguide, a microwave source 1 is connected via a known loss directional coupler 4 to a waveguide 2 and to the waveguide system 3 containing the test piece, in parallel. The energy applied to the test piece is modulated at 5. A hybrid coupler 7 adds the signals from the guide 2 and the test piece and supplies them to a rectifier system 10, 11 producing a unidirectional signal of amplitude dependent upon the attenuation produced by the test piece. Arrangements 14-18 measure the amplitude of the unidirectional signal. The measurement is effected by passing the output to a calibrated attenuator 15 which is adjusted to provide a standard reading on a meter 18, and then inserting a unit of known attenuation in the place of the test piece and determining the attenuation required to produce the same reading. The modulating arrangement 5 may be a variable impedance PIN diode mounted in a waveguide, to which a square wave modulating voltage may be applied. The hybrid coupler 7 may be a 3db or magic Tee coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4154564A GB1095002A (en) | 1964-10-12 | 1964-10-12 | Microwave attenuation measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4154564A GB1095002A (en) | 1964-10-12 | 1964-10-12 | Microwave attenuation measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1095002A true GB1095002A (en) | 1967-12-13 |
Family
ID=10420204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4154564A Expired GB1095002A (en) | 1964-10-12 | 1964-10-12 | Microwave attenuation measurement |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1095002A (en) |
-
1964
- 1964-10-12 GB GB4154564A patent/GB1095002A/en not_active Expired
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