Compact broad-band admittance tunnel incorporating gaussian beam antennas
First Claim
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1. A plane wave antenna comprising:
- a horn antenna;
a layered waveguide at least partially inside the horn antenna, wherein the layered waveguide comprises;
a central dielectric slab increasing in width toward the horn antenna and forming a first layer of the layered waveguide, the central dielectric slab with a first dielectric constant,a second slab forming a second layer of the layered waveguide, the second layer adjacent to the central dielectric slab, the second slab with a second dielectric constant smaller than the first dielectric constant, anda third slab forming a third layer of the layered waveguide, the third layer adjacent to the central dielectric slab such that the central dielectric slab is between the second and third slabs, the third slab with the second dielectric constant; and
wherein the central dielectric slab has a substantially constant thickness less than a quarter of a wavelength at a highest frequency of operation of the plane wave antenna.
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Abstract
A plane wave antenna including: a horn antenna; a waveguide at least partially inside the horn antenna, wherein the waveguide includes: a central dielectric slab increasing in width toward the horn antenna and with a first dielectric constant, an upper slab above the central dielectric slab with a second dielectric constant, and a lower slab below the central dielectric slab with the second dielectric constant; wherein the central dielectric slab has a substantially constant thickness less than a quarter of a wavelength at a highest frequency of operation of the plane wave antenna.
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Citations
22 Claims
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1. A plane wave antenna comprising:
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a horn antenna; a layered waveguide at least partially inside the horn antenna, wherein the layered waveguide comprises; a central dielectric slab increasing in width toward the horn antenna and forming a first layer of the layered waveguide, the central dielectric slab with a first dielectric constant, a second slab forming a second layer of the layered waveguide, the second layer adjacent to the central dielectric slab, the second slab with a second dielectric constant smaller than the first dielectric constant, and a third slab forming a third layer of the layered waveguide, the third layer adjacent to the central dielectric slab such that the central dielectric slab is between the second and third slabs, the third slab with the second dielectric constant; and wherein the central dielectric slab has a substantially constant thickness less than a quarter of a wavelength at a highest frequency of operation of the plane wave antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A sample evaluating system comprising:
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a transmitter for transmitting an evaluation signal, the transmitter comprising a horn antenna and a layered waveguide at least partially inside the horn antenna, the layered waveguide including a central dielectric slab increasing in width toward the horn antenna and forming a first layer of the layered waveguide, the central dielectric slab with a first dielectric constant, a second slab forming a second layer of the layered waveguide, the second layer adjacent to the central dielectric slab, the second slab with a second dielectric constant smaller than the first dielectric constant, and a third slab forming a third layer of the layered waveguide, the third layer adjacent to the central dielectric slab such that the central dielectric slab is between the second and third slabs, the third slab with the second dielectric constant; a receiver for receiving the evaluation signal; and a sample holder between the transmitter and the receiver, the sample holder comprising an iris having a serrated edge. - View Dependent Claims (13, 14, 15, 16)
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17. A method of manufacturing a plane wave antenna, the method comprising:
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forming a layered waveguide, the method of forming the layered waveguide comprising; forming a first layer of the layered waveguide from a central dielectric slab with a first dielectric constant, wherein the central dielectric slab is wider at a first end than at a second end, forming a second layer of the layered waveguide from a second dielectric slab with a second dielectric constant that is smaller than the first dielectric constant, the second dielectric slab adjacent to the central dielectric slab; forming a third layer of the layered waveguide from a third dielectric slab with the second dielectric constant, the second dielectric slab adjacent to the central dielectric slab such that the central dielectric slab is between the second and third dielectric slabs; inserting at least a portion of the waveguide into a horn antenna; and wherein the central dielectric slab has a substantially constant thickness less than a quarter of a wavelength at a highest frequency of operation of the plane wave antenna. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification
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Current AssigneeArizona Board of Regents (University of Arizona)
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Original AssigneeArizona Board of Regents (University of Arizona)
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InventorsZhang, Zhichao, LeBaron, Richard, Lozano-Plata, Lorena, Diaz, Rodolfo, Peebles, Jeffrey
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Primary Examiner(s)Owens; Douglas W
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Assistant Examiner(s)DUONG, DIEU HIEN
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Application NumberUS12/004,310Publication NumberTime in Patent Office1,154 DaysField of Search343/772, 343/773, 343/785, 343/786US Class Current343/785CPC Class CodesH01Q 13/0275 Ridged horns slot-line radi...H01Q 13/24 constituted by a dielectric...
