1. An antenna device for a RF communication equipment, comprising a substrate comprising front and back sides, a planar antenna element and a group of at least one component connected to said antenna element, characterised in that said planar antenna element is fixed to said substrate back side, in that said group of at least one component is fixed to said substrate front side, in an area located under said antenna element, and connected to said antenna element through at least a first connecting means passing through said substrate, and in that it comprises a low resistivity layer buried into said substrate for connecting to ground to isolate at least said group of component(s) from electromagnetic disturbances induced by said antenna element, wherein said antenna element is a slot antenna element comprising at least one slot and having first and second terminals respectively connected to said group of at least one component and to said buried layer through said first connecting means and a second connecting means passing through said substrate.
2. Antenna device according to claim 1, wherein said buried layer extends over a surface which is at least equal to the surface occupied by said antenna element, and in that said antenna element is fully located over said buried layer.
3. Antenna device according to claim 1, wherein said buried layer is arranged in order to act as a reflector for said antenna element.
4. Antenna device according to claim 1, wherein said buried layer is part of at least one component of said group.
5. Antenna device according to claim 1, further comprising at least one additional active component fixed to said substrate front side and electrically connected to at least one component of said group.
6. Antenna device according to claim 5, wherein said additional active component is a radio communication component.
7. Antenna device according to claim 1, wherein at least one component of said group defines a radio communication component.
8. Antenna device according to claim 1, wherein said radio communication component is an active low noise receiver.
9. Antenna device according to claim 1, wherein said radio communication component is a transmitter.
10. Antenna device according to claim 1, wherein said radio communication component is a transceiver.
11. Antenna device according to claim 1, further comprising connection pads (CPi) fixed to said substrate front side, electrically connected to said buried layer and to at least one component of said group andor to at least one of said active components and intended to be connected to a printed circuit board of said RF communication equipment.
12. Antenna device according claim 1, wherein said substrate is a high resistivity substrate.
13. Antenna device according to claim 12, wherein said substrate is made of material chosen in a group comprising at least silicon and semi insulating IIIV materials.
14. Antenna device according to claim 1, wherein said buried layer is made of doped silicon.
15. Antenna device according to claim 1, wherein said buried layer is realized by means of a passive integration process.
16. RF communication equipment, comprising an antenna device according to claim 1.
17. An antenna device for a RF communication equipment, comprising a substrate comprising front and back sides, a planar antenna element and a group of at least one component connected to said antenna element wherein at least one component of said group defines a low loss matching filter arranged to match an output impedance of said antenna element to an input of said active low noise receiver andor at least one component of said group defines at least a part of at least one decoupling capacitor, characterised in that said planar antenna element is fixed to said substrate back side, in that said group of at least one component is fixed to said substrate front side, in an area located under said antenna element, and connected to said antenna element through at least a first connecting means passing through said substrate, and in that it comprises a low resistivity layer buried into said substrate for connecting to ground to isolate at least said group of component(s) from electromagnetic disturbances induced by said antenna element.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
We claim:
1. An improved boning and defatting knife comprising;
a blade support unit including a handle, a blade support ring connected to and extending from said handle and a drive means mounted on at least one of said handle and said blade support ring; and
a blade unit including;
a generally toroidal blade engaging and locking device having a drive means engaging section and a releasable fastening and locking section;
a generally toroidal blade having an outer locking edge and an inner cutting edge;
said releasable fastening and locking section of said blade engaging and locking device operative to releasably receive and lock said outer locking edge of said blade thereon, whereby said blade is removable and replaceable; and
said blade unit being adapted to be removably and rotatably seated on said blade support ring with said drive device engaging said drive device engaging section of said blade unit such that said blade unit is rotated within and on said blade support ring by said drive device.
2. The improved boning and defatting knife of claim 1 further comprising a friction-reducing material mounted between said blade support ring and said blade unit such that said blade unit rotates with reduced friction within said blade support ring.
3. The improved boning and defatting knife of claim 2 wherein said friction-reducing material comprises a plurality of ball bearings mounted between said blade support ring and said blade unit.
4. The improved boning and defatting knife of claim 1 wherein said drive means comprises a drive shaft mounted within said handle and extending forwardly therefrom, said drive shaft adapted for connection to an external drive device, said drive shaft rotatably supported within said handle on a bearing sleeve and a beveled gear mounted on an end of said drive shaft, said beveled gear adapted to intermesh with said blade unit to rotate said generally toroidal blade within said blade unit.
5. The improved boning and defatting knife of claim 1 wherein said blade unit comprises a toothed ring positioned within, extending above and supported by said blade support ring, a generally circular blade fastening and locking ring section including at least one blade receiving and locking slot for receiving and securing said generally toroidal blade and a plurality of ball bearings positioned between said blade unit and said blade support ring thereby permitting said blade unit to rotate relative to said blade support ring with reduced friction and vibration.
6. The improved boning and defatting knife of claim 5 wherein said generally toroidal blade comprises an inner lower cutting edge and an upper section including at least one outwardly extending tab adapted to be engaged and retained by said at least one blade receiving and locking slot of said generally circular blade fastening and locking ring section.
7. The improved boning and defatting knife of claim 1 further comprising a cutting depth adjustment device including a generally flat plate extending generally parallel with the plane said generally toroidal blade, said plate adjustably mounted on one of said handle and said blade support ring, and an adjustment means operative to move said plate upwards or downwards relative to the plane of said generally toroidal blade thereby restricting the cutting depth of said improved boning and defatting knife.
8. The improved boning and defatting knife of claim 1 further comprising a blade sharpening device comprising a spring-loaded rod movably mounted on one of said handle and said blade support ring generally adjacent said blade unit, said blade sharpening unit further including a conic metal sharpening end mounted on said rod such that said sharpening end is movable to contact the cutting edge of said generally toroidal blade whereby as said sharpening end contacts said cutting edge, said cutting edge is sharpened by said contact.
9. An improved boning and defatting knife comprising;
a blade support unit including a handle, a blade support ring connected to and extending from said handle and a drive means mounted on at least one of said handle and said blade support ring; and
a blade unit including;
a generally toroidal blade engaging and locking device having a drive means engaging section and a releasable fastening and locking section;
a generally toroidal blade having an outer locking edge and an inner cutting edge;
said releasable fastening and locking section of said blade engaging and locking device operative to releasably receive and lock said outer locking edge of said blade thereon, whereby said blade is removable and replaceable;
said blade unit being adapted to be removably and rotatably seated on said blade support ring with said drive device engaging said drive device engaging section of said blade unit such that said blade unit is rotated within said blade support ring by said drive device; and
a friction-reducing material mounted between said blade support ring and said blade unit such that said blade unit rotates with reduced friction within and on said blade support ring.
10. The improved boning and defatting knife of claim 9 wherein said friction-reducing material comprises a plurality of ball bearings mounted between said blade support ring and said blade unit.
11. The improved boning and defatting knife of claim 9 wherein said drive means comprises a drive shaft mounted within said handle and extending forwardly therefrom, said drive shaft adapted for connection to an external drive device, said drive shaft rotatably supported within said handle on a bearing sleeve and a beveled gear mounted on an end of said drive shaft, said beveled gear adapted to intermesh with said blade unit to rotate said generally toroidal blade within said blade unit.
12. The improved boning and defatting knife of claim 9 wherein said blade unit comprises a toothed ring positioned within, extending above and supported by said blade support ring, a generally circular blade fastening and locking ring section including at least one blade receiving and locking slot for receiving and securing said generally toroidal blade and a plurality of ball bearings positioned between said blade unit and said blade support ring thereby permitting said blade unit to rotate relative to said blade support ring with reduced friction and vibration.
13. The improved boning and defatting knife of claim 12 wherein said generally toroidal blade comprises an inner lower cutting edge and an upper section including at least one outwardly extending tab adapted to be engaged and retained by said at least one blade receiving and locking slot of said generally circular blade fastening and locking ring section.
14. The improved boning and defatting knife of claim 9 further comprising a cutting depth adjustment device including a generally flat plate extending generally parallel with the plane said generally toroidal blade, said plate adjustably mounted on one of said handle and said blade support ring, and an adjustment means operative to move said plate upwards or downwards relative to the plane of said generally toroidal blade thereby restricting the cutting depth of said improved boning and defatting knife.
15. The improved boning and defatting knife of claim 9 further comprising a blade sharpening device comprising a spring-loaded rod movably mounted on one of said handle and said blade support ring generally adjacent said blade unit, said blade sharpening unit further including a conic metal sharpening end mounted on said rod such that said sharpening end is movable to contact the cutting edge of said generally toroidal blade whereby as said sharpening end contacts said cutting edge, said cutting edge is sharpened by said contact.