Claims
- 1. A high frequency nonreciprocal circuit element comprising:a dielectric substrate; a first magnetic member fitted in a cylindrical first hole formed in said dielectric substrate and constructing a nonreciprocal circuit; at least one second magnetic member fitted in a second cylindrical hole formed in a portion of said dielectric substrate surrounding said first hole and protruding from a surface of said dielectric substrate, said second magnetic member being externally applied with a magnetic field to change a magnetized state of said second magnetic member to enable said second magnetic member to regulate an operating frequency of said nonreciprocal circuit; and conductors having predetermined patterns and formed on surfaces of said dielectric substrate and said first magnetic member.
- 2. A high frequency nonreciprocal circuit element as claimed in claim 1, wherein a plurality of said second cylindrical holes are formed in said dielectric substrate and a plurality of said second magnetic members being of a cylindrical shape are respectively fitted in said second holes, said second magnetic members being smaller than said first magnetic member.
- 3. A high frequency nonreciprocal circuit element as claimed in claim 1, wherein said dielectric substrate is formed of a plastic material.
- 4. A high frequency nonreciprocal circuit element as claimed in claim 3, wherein said plastic material is polytetrafluoroethylene.
- 5. A high frequency nonreciprocal circuit element as claimed in claim 4, further comprising a grounding conductor provided on a rear surface of said dielectric substrate.
- 6. A high frequency nonreciprocal circuit element as claimed in claim 1, wherein said dielectric substrate is formed of a ceramic material.
- 7. A high frequency nonreciprocal circuit element as claimed in claim 1, wherein at least said second magnetic member is formed of hard ferrite.
- 8. A high frequency nonreciprocal circuit element of claim 1, wherein said at least one second magnetic member is smaller than said first magnetic member.
- 9. A high frequency nonreciprocal circuit element comprising:a dielectric substrate; a first magnetic member fitted in a first cylindrical hole formed in said dielectric substrate and constructing a nonreciprocal circuit; at least one second magnetic member fitted in a second cylindrical hole formed in a portion of said dielectric substrate surrounding said first hole and protruding from a surface of said dielectric substrate, said second magnetic member being of a changeable magnetized state for regulating an operating frequency of said nonreciprocal circuit; and conductors having predetermined patterns and formed on surfaces of said dielectric substrate and said first magnetic member.
- 10. A high frequency nonreciprocal circuit element of claim 9, wherein said at least one second magnetic member is smaller than said first magnetic member.
- 11. A high frequency nonreciprocal circuit element of claim 9, wherein a plurality of said second cylindrical holes are formed in said dielectric substrate and a plurality of said second magnetic members being of a cylindrical shape are respectively fitted in said second holes, said second magnetic members being smaller than said first magnetic member.
- 12. A high frequency nonreciprocal circuit element as claimed in claim 9, wherein said dielectric substrate is formed of a plastic material.
- 13. A high frequency nonreciprocal circuit element as claimed in claim 12, wherein said plastic material is polytetrafluoroethylene.
- 14. A high frequency nonreciprocal circuit element as claimed in claim 13, further comprising a grounding conductor provided on a rear surface of said dielectric substrate.
- 15. A high frequency nonreciprocal circuit element as claimed in claim 9, wherein said dielectric substrate is formed of a ceramic material.
- 16. A high frequency nonreciprocal circuit element as claimed in claim 9, wherein at least said second magnetic member is formed of hard ferrite.
Priority Claims (1)
Number |
Date |
Country |
Kind |
10-154792 |
Jun 1998 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of application Ser. No. 09/317,057, filed on May 24, 1999 now U.S. Pat. No. 6,348,843. The present invention claims priority from Japanese Patent Application No. 10-154792 filed Jun. 3, 1998, the contents of which are incorporated herein by reference.
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3101456 |
Brown, Jr. et al. |
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A |
3359510 |
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A |
4471329 |
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Continuations (1)
|
Number |
Date |
Country |
Parent |
09/317057 |
May 1999 |
US |
Child |
09/834539 |
|
US |