Dispersion engineered load to extend the bandwidth of electrically small antennas
AssigneeResearch Foundation of the City University of New York
InventorsYounes Ra'di, Ahmed Mekawy, Andrea Alù
Life of this patent
Estimating the term…
Abstract
An apparatus comprises an antenna; and a matching circuit comprising at least one electronic circuit element including a dispersive material for tuning the antenna to modify a bandwidth of the antenna. The dispersive material is configured to nullify at least a portion of the stored energy of at least one electronic circuit element from a vantage point of an antenna port of the antenna.
Claims20
An apparatus, comprising:
- an antenna;
- and
- a matching circuit comprising at least one electronic circuit element including a dispersive material for tuning the antenna to modify a bandwidth of the antenna, the dispersive material configured to nullify at least a portion of the stored energy of at least one electronic circuit element from a vantage point of an antenna port of the antenna.
A method of realizing an arbitrary frequency dispersion in the matching load of an antenna by implementing a corresponding circuit configuration:
- fitting the frequency dispersion into a sum of Lorentzian functions of the form
- ∑
- n
- (
- ω
- pn
- ω
- 0
-
- n
- )
- 2
- 1
- -
- (
- ω
- ω
- 0
-
- n
- )
- 2
- +
- j
-
- (
- γ
- n
- ω
- 0
-
- n
- )
-
- (
- ω
- ω
- 0
-
- n
- )
- ;
- and
- implementing for each Lorentzian term in the sum a corresponding circuit load, in which each circuit element follows the parameters of corresponding Lorentzian resonant frequency and dispersion parameters ωpn, ω0n, γn.
An apparatus comprising:
- an antenna;
- and
- a system that tunes the antenna according to a method comprising:
- fitting a frequency dispersion into a sum of Lorentzian functions of the from
- ∑
- n
- (
- ω
- pn
- ω
- 0
-
- n
- )
- 2
- 1
- -
- (
- ω
- ω
- 0
-
- n
- )
- 2
- +
- j
-
- (
- γ
- n
- ω
- 0
-
- n
- )
-
- (
- ω
- ω
- 0
-
- n
- )
- ;
- and
- implementing for each Lorentzian term in the sum a corresponding circuit load, in which each circuit element follows the parameters of corresponding Lorentzian resonant frequency and dispersion parameters ωpn, ω0n, γn.
Dependencies are inferred from the claim text.