Waveguide radiating element of an antenna suitable to operate in the Wi-Fi band, and system for measuring the performances of an antenna operating in the C band and using such a radiating element
First Claim
1. A waveguide radiating element having a working frequency that is tunable below a cut-off frequency, the waveguide radiating element comprising a rectangular tube presenting a longitudinal axis and a rectangular mouth on a plane perpendicular to the longitudinal axis;
- the rectangular mouth comprising an upper edge and a lower edge, as well as lateral edges; and
the rectangular tube being partially filled with a MNG meta-material comprised of a number Nl of dielectric slabs disposed on parallel planes that are spaced-apart,the number Nl of dielectric slabs being a positive integer number >
2,the parallel planes being incident on said lower edge of said mouth,each of the number of Nl dielectric slabs having engraved on each of their faces a number NSSR of concentric Split Ring Resonator (“
SSR”
) squares,each of the number NSSR of concentric SRR squares presenting a gap on one of its sides, andthe number NSSR of concentric SRR squares being a positive integer value ≧
1,wherein;
a supply pin has a height hp;
a distance dl between at least one pair of consecutive slabs of the number Nl of dielectric slabs is non-uniform along a direction of said lower edge;
the number NSSR of SSR squares present an arrangement of the gaps of an outmost square in such a way that, on facing sides of two adjacent slabs, the gaps are rotated with respect to each other, said gaps being rotated at an angle of 0°
, or 90°
, or 180°
, or 270°
with respect to an axis α
orthogonal to said two adjacent slabs, and the gaps of at least two of said number NSSR of SSR squares are rotated at an angle different from 180°
; and
the working frequency of the waveguide radiating element is a function of Nl, dl, hp, NSSR.
1 Assignment
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Accused Products
Abstract
Structures and methods for a tunable waveguide radiating element are disclosed. The waveguide radiating element comprises a rectangular tube, which includes partially filled dielectric slabs that are disposed on parallel planes and incident on a lower edge of the element'"'"'s mouth. The faces of each slab are engraved with a number of concentric SRR squares that present a gap on one of its sides. The distance between any two consecutive slabs may vary. The gaps of the outmost square may be arranged in such a way that, on the facing sides of two adjacent slabs, the gaps are rotated with respect to each other.
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Citations
15 Claims
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1. A waveguide radiating element having a working frequency that is tunable below a cut-off frequency, the waveguide radiating element comprising a rectangular tube presenting a longitudinal axis and a rectangular mouth on a plane perpendicular to the longitudinal axis;
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the rectangular mouth comprising an upper edge and a lower edge, as well as lateral edges; and the rectangular tube being partially filled with a MNG meta-material comprised of a number Nl of dielectric slabs disposed on parallel planes that are spaced-apart, the number Nl of dielectric slabs being a positive integer number >
2,the parallel planes being incident on said lower edge of said mouth, each of the number of Nl dielectric slabs having engraved on each of their faces a number NSSR of concentric Split Ring Resonator (“
SSR”
) squares,each of the number NSSR of concentric SRR squares presenting a gap on one of its sides, and the number NSSR of concentric SRR squares being a positive integer value ≧
1,wherein; a supply pin has a height hp; a distance dl between at least one pair of consecutive slabs of the number Nl of dielectric slabs is non-uniform along a direction of said lower edge; the number NSSR of SSR squares present an arrangement of the gaps of an outmost square in such a way that, on facing sides of two adjacent slabs, the gaps are rotated with respect to each other, said gaps being rotated at an angle of 0°
, or 90°
, or 180°
, or 270°
with respect to an axis α
orthogonal to said two adjacent slabs, and the gaps of at least two of said number NSSR of SSR squares are rotated at an angle different from 180°
; andthe working frequency of the waveguide radiating element is a function of Nl, dl, hp, NSSR. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for measuring programming and control parameters of a phased array antenna constituted by a plurality of transmitting-receiving modules (“
- TRM”
) modules, wherein the system uses one or more test TRM modules, each of the TRM modules comprising a waveguide radiating element that transmits signals relevant to programming and control antenna parameters,the signals being relevant to the presence and intensity of the radio-frequency, bus and control, supply voltage and temperature, the waveguide radiating element emitting outside the antenna'"'"'s band, said one or more test TRM modules being installed in place of a corresponding subset of said plurality of TRM modules of the phased array antenna, the system comprising; means for receiving signals from said one or more test TRM modules, and means for the transmission of said signals to an electronic elaboration unit, wherein; the waveguide radiating elements of said one or more test TRM modules are waveguide radiating elements having a working frequency that is tunable below a cut-off frequency, each of the waveguide radiating elements comprising; a rectangular tube presenting a longitudinal axis and a rectangular mouth on a plane perpendicular to the longitudinal axis; the rectangular mouth comprising an upper edge and a lower edge, as well as lateral edges; and the rectangular tube being partially filled with a MNG meta-material comprised of a number Nl of dielectric slabs disposed on parallel planes that are spaced-apart, the number Nl of dielectric slabs being a positive integer number >
2,the parallel planes being incident on said lower edge of said mouth, each of the number of Nl dielectric slabs having engraved on each of their faces a number NSSR of concentric Split Ring Resonator (“
SSR”
) squares,each of the number NSSRof concentric SRR squares presenting a gap on one of its sides, and the number NSSR of concentric SRR squares being a positive integer value ≧
1,wherein; a supply pin has a height hp; a distance dl between at least one pair of consecutive slabs of the number Nl of dielectric slabs is non-uniform along a direction of said lower edge; the number NSSR of SSR squares present an arrangement of the gaps of an outmost square in such a way that, on facing sides of two adjacent slabs, the gaps are rotated with respect to each other, said gaps being rotated at an angle of 0°
, or 90°
, or 180°
, or 270°
with respect to an axis a orthogonal to said two adjacent slabs, and the gaps of at least two of said number NSSR of SSR squares are rotated at another angle different from 180°
; andthe working frequency of the waveguide radiating element is a function of Nl, dl, hp,NSSR. - View Dependent Claims (14, 15)
- TRM”
Specification