Transponder tuning method and a transponder
View Patent ↗Tuning an antenna circuit that includes an inductance of a resonance circuit, and a component having a component impedance. The antenna circuit includes multiple connection areas for connecting the component to the antenna circuit At least two of the multiple of connection areas are part of the resonance circuit. The tuning can be performed by selecting at least one connection area for the component among the at least two of the multiple connection areas
1. A method for manufacturing an antenna circuit comprising an inductance of a resonance circuit, the method comprising:
forming multiple alternative connection areas for connecting a component to the antenna circuit, at least two of said multiple of connection areas being part of the resonance circuit;
forming said inductance of the resonance circuit as a dipole antenna comprising two radiators, said radiators comprising at least a first end and a second end;
forming a conductor between said second end of each of said two radiators and said multiple of alternative connection areas;
connecting the component to at least two of said multiple of alternative connection areas;
forming a loop conductor between said radiators, and forming the connection areas in such a way that each connection area together with the conductors and the loop conductor forms a loop.
2. The method according to claim 1 , further comprising:
using a chip as said component.
3. The method according to claim 1 , further comprising:
using a module comprising a chip as said component.
4. The method according to claim 1 , further comprising:
forming a coil to the resonance circuit the coil comprising at least a first end and a second end, and
forming said multiple connection areas for a chip at said second end of the coil.
5. The method according to claim 1 , further comprising:
forming a dipole antenna comprising two radiators to the antenna circuit, and
forming lengthening coils to connect the radiators of the dipole with said multiple of connection areas for a chip.
6. An antenna circuit, comprising:
an inductance of a resonance circuit, wherein said inductance of the resonance circuit comprises a dipole antenna comprising two radiators, wherein said radiators comprise a first end and a second end;
a component comprising a component impedance,
multiple alternative connection areas for connecting the component to the antenna circuit, wherein at least two of said multiple of connection areas are part of the resonance circuit, wherein the component is connected to at least two of said multiple of alternative connection areas:
a conductor between said second end of each of said two radiators and said multiple of alternative connection areas; and
a loop conductor between said radiators, wherein each connection area together with the conductors and the loop conductor forms a loop.
7. The antenna circuit according to claim 6 , further comprising:
radiators,
lengthening coils connected at one end to the radiators and at the other end to one of the connection areas, and
a conductor configured to connect the connection areas to another connection area, wherein the a conductor has an impedance.
8. The antenna circuit according to claim 6 further comprising:
radiators connected at one end to the connection areas, and
a loop conductor between the radiators,
wherein the connection areas are formed in such a way that each connection area together with the loop conductor forms a loop, and wherein the area of the cross section of the loops differs from each other.
9. A transponder, comprising:
an inductance of a resonance circuit, wherein said inductance of the resonance circuit is a dipole antenna comprising two radiators, said radiators comprising at least a first end and a second end;
a component comprising a component impedance, and
multiple alternative connection areas for connecting the component to the transponder, at least two of said multiple connection areas being part of the resonance circuit, wherein the component is connected to at least two of said multiple of alternative connection areas;
a conductor between said second end of each of said two radiators and said multiple of alternative connection areas; and
a loop conductor between said radiators, wherein each connection area together with the conductors and the loop conductor forms a loop.
10. The transponder according to claim 9 , wherein the component is a chip.
11. The transponder according to claim 9 , wherein the component is a module comprising a chip.
12. The transponder according to claim 9 , further comprising:
radiators,
lengthening coils connected at one end to the radiators and at the other end to one of the connection areas, and
a conductor configured to connect the connection areas to another connection area, wherein the conductor has an impedance.
13. The transponder according to claim 9 , further comprising:
radiators connected at one end to the connection areas, and
a loop conductor between the radiators,
wherein the connection areas are formed in such a way that each connection area together with the loop conductor forms a loop, and wherein the area of the cross section of the loops differs from each other.
14. The transponder according to claim 9 , wherein said component comprises a module which comprises a chip, wherein the module is attached with the transponder.