Electronic Component Comprising a Modulator

• US 20080218315A1
• Filed: 12/06/2005
• Published: 09/11/2008
• Est. Priority Date: 12/10/2004
• Status: Active Grant

• Current Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Original Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Inventors: Fix, Walter, Ullmann, Andreas, Bohm, Markus
• Granted Patent: US 7,786,818 B2
• Time in Patent Office: Days
• US Class Current: 340/10.3
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card

Abstract

The invention relates to an electronic component, in particular and RFID transponder, and also a security document comprising such an electronic component. The electronic component has a modulator for modulating a carrier signal, said modulator being constructed from at least two organic field effect transistors (72, 73).

Claims

1. An electronic component comprising:

an antenna, a capacitor, and a modulator for modulating a carrier signal and coupled in circuit with the antenna and the capacitor; and

a rectifier having an output;

the modulator being connected to the output of the rectifier, the modulator comprising at least two different organic field effect transistors each with different semiconductor layers wherein the at least two different organic field effect transistors have at least one of

     1) different internal resistances in a turned-on or in a turned-off state or

     2) a different switching behavior, and are connected in the electronic component to form a variable load for load modulation of the carrier signal.

2. The electronic component as claimed in claim 1 wherein the organic field effect transistors are connected in parallel and/or series.

3. The electronic component as claimed in claim 1 wherein the at least two different organic field effect transistors exhibit different edge forms when the input signal changes, which edge forms differ in edge steepness.

4. The electronic component as claimed in claim 1 wherein the at least two different organic field effect transistors are formed with different geometries.

5. The electronic component as claimed in claim 1 wherein the at least two different organic field transistors have semiconductor layers that differ in terms of at least one of their thickness, doping or conductivity.

6. The electronic component as claimed in claim 1 further including a binary logic circuit having outputs, wherein the at least two organic field effect transistors each have a gate, the gates of the organic field effect transistors being connected to the outputs of the binary logic circuit.

7. The electronic component as claimed in claim 6 wherein the binary logic circuit is an organic binary logic circuit.

8. The electronic component as claimed in claim 6 wherein the organic field effect transistors are driven by the binary logic circuit for the simultaneous transmission of two or more bits by multistage modulation.

9. The electronic component as claimed in claim 8 wherein the organic field effect transistors are formed by n different organic field effect transistors which are driven by the binary logic circuit for the simultaneous transmission of 2ⁿ bits.

10. The electronic component as claimed in claim 9 wherein the n different organic field effect transistors have different internal resistances in the turned-on state and the n different organic field effect transistors are connected in parallel.

11. The electronic component as claimed in claim 9 wherein the n different organic field effect transistors have different edge forms during state transition and the n different organic field effect transistors are connected in parallel.

12. The electronic component as claimed in claim 1 wherein the organic field effect transistors are formed by at least one of printed-on semiconducting polymers, conductive printing inks or metallic layers.

13. The electronic component as claimed in claim 1 wherein the electronic component comprises a multilayer flexible film body.

14. A security document comprising:

at least one of a valuable document, identity card, merchandise label or ticket and

comprising an electronic component as claimed in claim 1.

15. An electronic component comprising:

an antenna, a capacitor, and a modulator for modulating a carrier signal and coupled in circuit with the antenna and the capacitor; and

a rectifier having an output;

the modulator being connected to the output of the rectifier, the modulator comprising at least two different organic field effect transistors, wherein the at least two different organic field effect transistors have semiconductor layers having respective different geometries, and having different internal resistances in a turned-on or in a turned-off state and are connected in the electronic component to form a variable load for load modulation of the carrier signal.

16. An electronic component comprising:

an antenna, a capacitor, and a modulator for modulating a carrier signal and coupled in circuit with the antenna and the capacitor; and

a rectifier having an output;

the modulator being connected to the output of the rectifier, the modulator comprising at least two different organic field effect transistors, each with different semiconductor layers having different geometries and wherein the at least two different organic field effect transistors having a different switching behavior, and are connected in the electronic component to form a variable load for load modulation of the carrier signal.