Broadband antenna for a transponder of a radio frequency identification system
First Claim
Patent Images
1. A broadband antenna for a transponder of a radio frequency identification system comprising:
- a loop resonator with a feedpoint for connecting with an electronic circuit, anda dipole resonator electrically connected to the loop resonator and comprising two electrically isolated legs,wherein the loop resonator comprises two electrical lines, wherein;
one end of each line is provided for connecting with the electronic circuit,the other end of each line is coupled to a respective one of the two electrically isolated legs of the dipole resonator, anda coupling couples the other ends of the two lines.
10 Assignments
0 Petitions
Accused Products
Abstract
A broadband antenna structure (10) for a transponder of a radio frequency identification system comprises—a loop resonator (12) with a feedpoint (14) for connecting with an electronic circuit (16), and—a dipole resonator (18) electrically connected to the loop resonator (12) and comprising two electrically isolated legs (20, 22).
-
Citations
18 Claims
-
1. A broadband antenna for a transponder of a radio frequency identification system comprising:
-
a loop resonator with a feedpoint for connecting with an electronic circuit, and a dipole resonator electrically connected to the loop resonator and comprising two electrically isolated legs, wherein the loop resonator comprises two electrical lines, wherein; one end of each line is provided for connecting with the electronic circuit, the other end of each line is coupled to a respective one of the two electrically isolated legs of the dipole resonator, and a coupling couples the other ends of the two lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14)
-
-
11. An antenna as claimed in 9, wherein both legs have a first predefined width essentially equal to the width of the lines of the loop resonator at least for the predefined length for which they are arranged in parallel.
-
15. A broadband antenna for a transponder of a radio frequency identification system comprising:
-
a loop resonator with a feedpoint for connecting with an electronic circuit, and a dipole resonator electrically connected to the loop resonator and comprising two electrically isolated legs, wherein both legs diverge over a second predefined length after being arranged in parallel over a first predefined length and have a second predefined width. - View Dependent Claims (16)
-
-
17. An antenna as claimed in 15, wherein both legs have a first predefined width essentially equal to the width of the lines of the loop resonator at least for the predefined length for which they are arranged in parallel.
-
18. A broadband antenna for a transponder of a radio frequency identification system comprising:
-
a loop resonator with a feedpoint for connecting with an electronic circuit, and a dipole resonator electrically connected to the loop resonator and comprising two electrically isolated legs, wherein electrically conducting parts of the antenna are electrically conducting metallization deposited on or embedded into a substrate having a dielectric constant equal or larger than 1 and a permeability coefficient equal or larger than 1.
-
Specification