Claims
- 1. A microwave system for measuring particle and shock velocity in a medium, comprising:
- (a) a waveguide for embedding in a medium;
- (b) microwave transmission means for coupling microwave signals at a preselected frequency to said waveguide;
- (c) a dielectric, disposed within said waveguide, having mechanical properties substantially matched with the mechanical properties of the medium;
- (d) a flexible element connected to one end of said waveguide for reflecting microwaves thereby providing a standing wave in the dielectric responsive to movement of said flexible element; and
- (e) a receiver responsive to said standing wave for determining the amount of movement of said standing wave.
- 2. The apparatus of claim 1 wherein said waveguide includes a launcher horn located between said dielectric and said transmission means.
- 3. The apparatus of claim 2 wherein said launcher horn is substantially one-shaped with the apex terminating in said transmission means and the base terminating at said dielectric.
- 4. The apparatus of claim 3 wherein said launcher horn includes a bore therein extending from said apex to said base, said bore being filled with a high dielectric core including a pair of transition slugs.
- 5. The apparatus of claim 1 wherein said dielectric includes:
- (a) a high dielectric core, and
- (b) a low dielectric sheath surrounding the core.
- 6. The apparatus of claim 5 wherein said high dieletric core includes a pair of transition slugs.
- 7. The apparatus of claim 5 wherein said core has a dielectric constant of approximately eight and said sheath has a dielectric constant of approximately two.
- 8. The apparatus of claim 4 wherein said high dielectric core has a dielectric constant of approximately eight.
- 9. The apparatus of claim 6 wherein said pair of transition slugs are fabricated from a stycast material.
- 10. The apparatus of claim 5 wherein said
- (a) high dielectric core is fabricated from teflon powder; and
- (b) said low dielectric sheath is fabricated from a solid teflon.
- 11. The apparatus of claim 2 wherein the launcher horn is fabricated from brass.
STATEMENT OF GOVERNMENT INTEREST
The invention described and claimed herein may be manufacured and used by or for the Government of the United States of America for governmental purposes without the payment of royalties thereon or therefor.
US Referenced Citations (15)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0913071 |
Mar 1982 |
SUX |