Transponder modules, RF tagging system, method of operating a transponder module and methods of tagging an object having a conductive surface
First Claim
1. A transponder module comprising:
- a circuit board having first and second surfaces;
a ground plane formed on the first surface;
a low profile receive antenna formed on the circuit board over the ground plane;
a RF engine having an input coupled to the receive antenna, an output and a power supply input;
a RF decoupling network having first and second ports, the first port coupled to the output of the RF engine;
a second ground plane formed on the first surface; and
a low profile backscatter antenna coupled to the second port of the RF decoupling network, the backscatter antenna formed over the second ground plane.
3 Assignments
0 Petitions
Accused Products
Abstract
A transponder module includes a circuit board having top and bottom surfaces and an inverted-F receive antenna formed on the circuit board. The receive antenna includes a ground plane formed on one of the surfaces and an active element formed above the ground plane. The module also includes a RF engine having an input coupled to the receive antenna, an output and a power supply input. The module additionally includes a RF decoupling network having first and second ports. The first port is coupled to the output of the RF engine. The module further includes an inverted-F backscatter antenna coupled to the second port of the RF decoupling network. The backscatter antenna includes a second ground plane formed on one of the surfaces and a second active element formed above the second ground plane. A method of tagging an object having a conductive surface includes coupling a transponder module including a low profile antenna to the conductive surface such that a ground plane contained in the transponder module is adjacent the conductive surface of the object and transmitting a signal from the low profile antenna to an interrogator, the signal including information relevant to the object.
50 Citations
34 Claims
-
1. A transponder module comprising:
-
a circuit board having first and second surfaces;
a ground plane formed on the first surface;
a low profile receive antenna formed on the circuit board over the ground plane;
a RF engine having an input coupled to the receive antenna, an output and a power supply input;
a RF decoupling network having first and second ports, the first port coupled to the output of the RF engine;
a second ground plane formed on the first surface; and
a low profile backscatter antenna coupled to the second port of the RF decoupling network, the backscatter antenna formed over the second ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A transponder module comprising:
-
a circuit board having top and bottom surfaces;
an inverted-F receive antenna formed on the circuit board, the receive antenna including a ground plane formed on one of the surfaces and an active element formed on another of the surfaces above the ground plane;
a RF engine having an input coupled to the receive antenna, an output and a power supply input;
a RF decoupling network having first and second ports, the first port coupled to the output of the RF engine; and
an inverted-F backscatter antenna coupled to the second port of the RF decoupling network, the backscatter antenna including a second ground plane formed on one of the surfaces and a second active element formed above the second ground plane. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A RF tagging system comprising:
-
an interrogation unit for transmitting interrogation signals and receiving backscattered signals in response to the interrogation signals; and
a transponder module including;
a circuit board having top and bottom surfaces;
a first ground plane formed on one of the surfaces;
a low profile receive antenna formed on the circuit board above the first ground plane;
a RF engine having an input coupled to the receive antenna, an output and a power supply input;
a RF decoupling network having first and second ports, the first port coupled to the output of the RF engine;
a second ground plane formed on one of the surfaces; and
a low profile backscatter antenna formed on the circuit board above the second ground plane, the backscatter antenna coupled to the second port of the RF decoupling network. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
-
-
25. A method of operating a transponder module comprising:
-
receiving an interrogation signal by an inverted-F antenna contained within the transponder module; and
transmitting a modulated backscattered response signal from a backscatter inverted-F antenna contained within the transponder module in response to the received interrogation signal. - View Dependent Claims (26, 27, 28)
-
-
29. A method of tagging an object having a conductive surface comprising:
-
coupling a transponder module including a low profile antenna to the conductive surface such that a ground plane contained in the transponder module is adjacent the conductive surface of the object; and
transmitting a signal from the low profile antenna to an interrogator, the signal including information relevant to the object. - View Dependent Claims (30, 31)
-
-
32. A method of tagging an object having a conductive surface comprising:
-
coupling a transponder module to the conductive surface such that a ground plane contained in the transponder module is adjacent the conductive surface of the object;
receiving an interrogation signal in a low profile receive antenna contained in the module; and
transmitting a backscatter signal from a low profile backscatter antenna to an interrogator in response to the interrogation signal, the backscatter signal including information relevant to the object. - View Dependent Claims (33, 34)
-
Specification