High temperature transponders

A transponder, comprising:

• an antenna assembly, comprising:
• a core having a length ranging from 5 mm to 20 mm;
• an insulated wire disposed around the core in a coil, the insulated wire having a first end and a second end;
• and
• an integrated circuit chip, wherein the first end and the second end of the insulated wire are each connected to the integrated circuit chip;
• and
• a high temperature adhesive covering at least 50% of the insulated wire, wherein the adhesive is cured.

A transponder, comprising:

• an antenna assembly, including:
• a core;
• an insulated wire coiled around the core, the insulated wire having a first end and a second end;
• and
• an integrated circuit chip electrically coupled to the first end and the second end of the insulated wire;
• and
• a high temperature adhesive completely covering the insulated wire.

A transponder comprising:

• an antenna assembly including:
• a core having a width ranging from 0.5 mm to 5 mm;
• an insulated wire wound around the core, the wire having a first end and a second end;
• and
• an integrated circuit chip comprising two portions of a metal or metal alloy embedded into a surface of the integrated circuit chip, wherein the first and second ends of the wire are each connected to one of the two portions;
• and
• an adhesive covering at least 75% of the insulated antenna wire, wherein the adhesive withstands temperatures ranging from 180° C. to 270° C. without evaporating or expanding.