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US 4,987,377 AGranted
Field emitter array integrated distributed amplifiers
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsHenry F. Gray, Richard F. Greene
Life of this patent
Estimating the term…
Abstract
Distributed amplifiers in integrated circuit form wherein dielectric matel and electrically conductive material combine to form field emitter cathodes, grids, and anodes in a module forming one or more amplifier cells embedded in a matrix of reactive impedances that form companion stripline-like transmission lines in a vacuum or sufficiently low pressure gas such that electrons remain unscattered during travel over trajectories from cathode to anode in a cell.
Claims8
A distributed amplifier comprising:
- an anode;
- a cathode;
- a grid:
- and
- a dielectric means for establishing a capacitance between said cathode and said grid, and for establishing a capacitance between said anode and said grid;
- wherein:
- said cathode and said grid are adapted to form an input waveguide for said amplifier;
- said anode and said grid are adapted to form an output waveguide for said amplifier;
- said cathode comprises a plurality of field emitters, each field emitter of said plurality of field emitters being associated with a slot means in said grid for permitting electrons from said each field emitter to travel through said grid to said anode;
- and
- the size, shape, and material of said cathode, grid, anode, and dielectric means are selected to cause;
- (1) responsive to the presence of an electromagnetic signal in said input waveguide, the creation of an electromagnetic signal in said output waveguide;
- and
- (2) both said signals to arrive at each of said plurality of field emitters substantially simultaneously;
- and
- wherein said plurality of field emitters is at least three field emitters, one of said at least three field emitters being in the shape of a cone, a second of said at least three field emitters being in the shape of a pyramid, and a third of said at least three field emitters being in the shape of au elongate wedge.
13 more elements
A distributed amplifier comprising:
- an anode;
- a cathode;
- a grid;
- and
- a dielectric means for a capacitance between said cathode and said grid, and for establishing a capacitance between said anode and said grid;
- wherein;
- said cathode and said grid are adapted to form an input waveguide for said amplifier;
- said anode and said grid are adapted to form an output waveguide for said amplifier;
- said cathode comprises a plurality of field emitters, each field emitter of said plurality of field emitters being associated with a slot means in said grid for permitting electrons from said each field emitter to travel through said grid to said anode;
- and
- the size, shape, and material of said cathode, grid, anode, and dielectric means are selected to cause:
- (1) responsive to the presence of an electromagnetic signal in said input waveguide, the creation of an electromagnetic signal in said output waveguide;
- and
- (2) both said signals to arrive at each of said plurality of field emitters substantially simultaneously;
- and wherein:
- said grid is a plurality of strips in electrical parallel with one another;
- and
- said anode is a generally planar strip cooperating with each of said plurality of strips to form said output waveguide.
15 more elements
A distributed amplifier comprising:
- au anode;
- a cathode;
- a grid;
- and
- a dielectric means for establishing a capacitance between said cathode and said grid, and for establishing a capacitance between said anode and said grid;
- wherein:
- said cathode and said grid are adapted to form an input waveguide for said amplifier;
- said anode and said grid are adapted to form an output waveguide for said amplifier;
- said cathode comprises a plurality of field emitters, each field emitter of said plurality of field emitters being associated with a slot means in said grid for permitting electrons from said each field emitter to travel through said grid to said anode;
- and
- the size, shape, and material of said cathode, grid, anode, and dielectric means are selected to cause:
- (1) response to the presence of an electromagnetic signal in said input waveguide, the creation of an electromagnetic signal in said output waveguide;
- and
- (2) both said signals to arrive at each of said plurality of field emitters substantially simultaneously, and
- wherein at least a portion of said grid is formed by a pair of grid striplines in electrical parallel with one another, the distance between said grid striplines transverse to the direction of propagation of said signals being said slot means associated with at least one of said plurality of field emitters.
12 more elements
A distributed amplifier comprising:
- an anode;
- a cathode;
- a grid;
- and
- a dielectric means for establishing a capacitance between said cathode and said grid, and for establishing a capacitance between said anode and said grid;
- wherein:
- said cathode and said grid are adapted to form an input waveguide for said amplifier;
- said anode and said grid are adapted to form an output waveguide for said amplifier;
- said cathode comprising a plurality of field emitters, each field emitter of said plurality of field emitters being associated with a slot means in said grid for permitting electrons from said each field emitter to travel through said grid to said anode;
- and
- the size, shape, and material of said cathode, grid, anode, and dielectric means are selected to cause:
- (1) responsive to the presence of an electromagnetic signal in said input waveguide, the creation of an electromagnetic signal in said output waveguide;
- and
- (2) both said signals to arrive at each of said plurality of field emitters substantially simultaneously and;
- wherein said input and said output waveguides follow a meandering path in substantial registry with one another.
12 more elements
A distributed amplifier comprising:
- an anode;
- a cathode;
- a grid;
- and
- a dielectric means for establishing a capacitance between said cathode and said grid, and for establishing a capacitance between said node and said grid;
- wherein:
- said cathode and said grid are adapted to form an input waveguide for said amplifier;
- said anode and said grid are adapted to form an output waveguide for said amplifier;
- said cathode comprises a plurality of field emitters, each field emitter of said plurality of field emitters being associated with a slot means in said grid for permitting electrons from said each field emitter to travel through said grid to said anode;
- and
- the size, shape, and material of said cathode, grid, anode, and dielectric means are selected to cause:
- (1) responsive to the presence of an electromagnetic signal in said input waveguide, the creation of an electromagnetic signal in said output waveguide;
- and
- (2) both said signals to arrive at each of said plurality of field emitters substantially simultaneously;
- and
- wherein said anode and said grid lie in substantially the same plane in the vicinity of at least one of said plurality of field emitters.
13 more elements
Dependencies are inferred from the claim text.