GB1354474A - Measurement of the dielectric properties of material - Google Patents
Measurement of the dielectric properties of materialInfo
- Publication number
- GB1354474A GB1354474A GB1354474DA GB1354474A GB 1354474 A GB1354474 A GB 1354474A GB 1354474D A GB1354474D A GB 1354474DA GB 1354474 A GB1354474 A GB 1354474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip line
- plane
- central conductor
- ground
- waveguides
- 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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1354474 Electro-physical measurement - moisture NATIONAL RESEARCH DEVELOPMENT CORP 2 June 1971 [16 March 1970] 12552/70 Heading GIN In a system for determining dielectric properties of material by R.F. absorption, a STRIP LINE is used instead of a waveguide for the measuring cell. Several cell constructions are shown for measuring the moisture content of fluids of particulate material and textile webs. In Fig. 1 the strip line comprises a central conductor 4 with ground plane conducting sheets 3 (in the plane of the Figure) and insulating side panels 5, 5' . Conical matching sections 6, 6' join the line to co-axial feeders 7, 7' connected to waveguides 9, 9'. A notch may be provided in the central conductor at the start of the conical section to improve the matching Fig. 2 (not shown). In other modifications:- Fig.3 (not shown) the central conductor (33), and ground planes (31) are mounted directly between the waveguides; Figs.4a, 4b (not shown) the strip line is mounted transversely of the material feed tubes; Figs. 4c, 4d (not shown) strip material (e.g. paper) passes between the conductor and a ground plane; Figs.5, 6 (not shown) the material passes over a strip line with a single ground-plane at the bottom of a chute.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1255270 | 1970-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1354474A true GB1354474A (en) | 1974-06-05 |
Family
ID=10006737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1354474D Expired GB1354474A (en) | 1970-03-16 | 1970-03-16 | Measurement of the dielectric properties of material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1354474A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0288135A2 (en) * | 1987-03-09 | 1988-10-26 | United Kingdom Atomic Energy Authority | Microwave probe |
| WO1991000512A1 (en) * | 1989-07-04 | 1991-01-10 | The Minister Of Agriculture Fisheries And Food In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Portable device for use in the measurement of the dielectric properties of materials |
| US6747460B2 (en) * | 2001-03-15 | 2004-06-08 | Hauni Maschinenbau Ag | Microwave-resonator and measuring device |
-
1970
- 1970-03-16 GB GB1354474D patent/GB1354474A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0288135A2 (en) * | 1987-03-09 | 1988-10-26 | United Kingdom Atomic Energy Authority | Microwave probe |
| US4829233A (en) * | 1987-03-09 | 1989-05-09 | United Kingdom Atomic Energy Authority | Microwave probe |
| EP0288135A3 (en) * | 1987-03-09 | 1990-02-21 | United Kingdom Atomic Energy Authority | Microwave probe |
| WO1991000512A1 (en) * | 1989-07-04 | 1991-01-10 | The Minister Of Agriculture Fisheries And Food In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Portable device for use in the measurement of the dielectric properties of materials |
| US5229726A (en) * | 1989-07-04 | 1993-07-20 | The Secretary Of State For Minister Of Agriculture Fisheries And Food In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Portable device for use in the measurement of a component content of a material |
| US6747460B2 (en) * | 2001-03-15 | 2004-06-08 | Hauni Maschinenbau Ag | Microwave-resonator and measuring device |
| US6917205B2 (en) | 2001-03-15 | 2005-07-12 | Hauni Maschinenbau Ag | Microwave-resonator and measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |