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US 6,642,900 B2Granted
High radiation efficient dual band feed horn
AssigneeThe Boeing Company
InventorsArun Bhattacharyya, Daniel H. Roper
Life of this patent
Estimating the term…
Abstract
A multiple mode feed horn is provided for transmitting and receiving signals. The feed horn includes a transverse electric throat section, a transverse electric profile section, and a transverse electric aperture section. The transverse electric profile section propagates a first transverse electric (TE) mode. The transverse electric aperture section propagates a second TE mode. The multiple mode feed horn prevents propagation of traverse magnetic modes from said throat section to said aperture section.
Claims19
A multiple mode feed horn for transmitting and receiving signals comprising:
- a throat section having an input end, said throat section comprising:
- a first cylindrical section having a first fore end and a first aft end;
- and
- a first flared section having a first tapered end and a first expanded end;
- said first tapered end is coupled to said first aft end;
- a profile section comprising:
- a first step coupled to said first expanded end, said first step propagating a first transverse electric (TE) mode;
- a second cylindrical section having a second fore end and a second aft end, said second fore end is coupled to said first step;
- and
- a second flared section having a second tapered end and a second expanded end, said second tapered end coupled to said second aft end;
- and
- an aperture section having an output end, said aperture section comprising:
- a first flared step having a third step coupled to a third flared section, said third step is coupled to said second expanded end;
- said first flared step propagating a second TE mode;
- and
- a mouth defined by an inner diameter of said output end.
13 more elements
A multiple mode feed horn for transmitting and receiving signals comprising:
- a transverse electric throat section;
- a transverse electric profile section having a first step propagating a first transverse electric (FE) mode and a first transverse magnetic (TM) mode;
- and
- a transverse electric aperture section having a second step propagating a second transverse electric (TE) mode and a second transverse magnetic (TM) mode canceling the first (TM) mode;
- wherein said multiple mode feed horn minimizes the propagation of transverse magnetic modes.
2 more elements
A multiple mode feed horn for transmitting and receiving signals comprising:
- a throat section having an input end, said throat section comprising:
- a first cylindrical section having a first fore end and a first aft end;
- a first flared section having a first tapered end and a first expanded end;
- said first tapered end is coupled to said first aft end;
- a profile section comprising:
- a first step coupled to said first expanded end, said first step propagating a first transverse electric (TE) mode;
- a second cylindrical section having a second fore end and second aft end, said second fore end is coupled to said first step;
- and
- a second flared section having a second tapered end and a second expanded end, said second tapered end coupled to said second aft end;
- and
- an aperture section having an output end, said aperture section comprising:
- a first flared step having a third step coupled to a third flared section, said third step is coupled to said second expanded end;
- said first flared step propagating a second TE mode;
- and
- a mouth defined by an inner diameter of said output end;
- said multiple mode feed horn preventing the propagation of transverse magnetic modes.
13 more elements
A multiple mode feed horn for transmitting and receiving signals having an axis of symmetry, said feed horn comprising:
- a throat section having an input end, said throat section comprising:
- a first cylindrical section having a first fore end and a first aft end, said first aft end having a first inner diameter;
- a first flared section having a first tapered end and a first expanded end, said first tapered end having an inner diameter equal to said first inner diameter and coupled to said first aft end;
- said first flared section expanding at a certain angle from said first tapered end to said first expanded end relative to the axis of symmetry;
- a profile section comprising:
- a first step coupled to said first expanded end, said first step propagating a first transverse electric (TE) mode;
- a second cylindrical section having a second fore end, second aft end, and a second inner diameter that is equal to a diameter of a first outer periphery of said first step and is coupled to said first step;
- and
- a second flared section having a second tapered end and a second expanded end, said second tapered end having an inner diameter equal to said second inner diameter and coupled to said second aft end;
- said second expanded end having a third inner diameter;
- said second flared section expanding at a certain angle from said second tapered end to said second expanded end relative to the axis of symmetry;
- and
- an aperture section having an output end, said aperture section comprising:
- a first flared step having a second step coupled to a third flared section, said second step having an inner diameter equal to said third inner diameter and is coupled to said second expanded end;
- said third flared section expanding in diameter at a certain angle from said second step toward said output end relative to the axis of symmetry;
- said first flared step propagates a second TE mode;
- and
- a mouth defined by an inner diameter of said output end;
- said multiple mode feed horn preventing the propagation of transverse magnetic modes.
16 more elements
Dependencies are inferred from the claim text.