Claims
- 1. In a method of spatially separating ac and dc electric fields, the use of a material which functions substantially as a material having high dielectric constant to the ac fields and substantially as an electrical conductor to the dc fields, the method comprising the subjecting of a spatial volume to a said ac electric field and a said dc electric field and the placing of a shield of said material whereby it intercepts said fields before their receipt in said volume, said shield of said material thereby shielding said volume from said dc electric field and permitting said ac electric field to be received in said volume.
- 2. A method in accordance with claim 1, wherein frequency of the AC fields is in excess of about 1 mega hertz and the material has a dielectric constant in the range of about between 1 and 50 and a resistivity in excess of about 10.sup.5 ohm-cm.
- 3. A method in accordance with claim 2 wherein the material has a magnetic permeability in a range of between about 1 and 1,000.
- 4. In a method of spatially separating ac electric fields at two different frequencies, one frequency being substantially lower than the other frequency, the use of a material which functions substantially as a material having a high dielectric constant to the fields of the higher of said frequencies and substantially as an electrical conductor to the fields of the lower of said frequencies, the method comprising the subjecting of a spatial volume to said higher frequency electric field and to said lower frequency electric field and the placing of a shield of said material whereby it intercepts said fields before their receipt in said volume, said shield of said material thereby shielding said volume from said lower frequency electric field and permitting said higher frequency electric field to be received in said volume.
- 5. A method in accordance with claim 4 wherein the lower of said frequencies is substantially zero.
RELATED APPLICATIONS
This is a division of application Ser. No. 346,250 filed Mar. 30, 1973 now U.S. Pat. No. 3,867,632.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
346250 |
Mar 1973 |
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