Electric monomicrostrip dipole antennas
First Claim
1. A notched fed electric monomicrostrip dipole antenna structure comprising:
- a. a dielectric substrate;
b. a thin rectangular radiating element disposed on one side of said dielectric substrate;
c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element;
d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;
e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited;
f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the fields on both sides of the antenna being in phase;
g. the length of said radiating element determining the resonant frequency of the antenna;
h. said radiating element having a feed point located along the centerline of the length thereof;
i. said radiating element having a notch extending into the element along the centerline of the length from one end thereof to said feed point;
j. the antenna input impedance being variable to match most practical impedances as said feed point is moved along the element centerline without affecting the radiation pattern;
k. the antenna bandwidth being variable with the width of said radiating element and the spacing between the radiating element and said ground plane, the width of said notch being a factor as to the effective width of said radiating element, said spacing between the radiating element and the ground plane having somewhat greater effect on the bandwidth than the width of said radiating element.
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Accused Products
Abstract
The electric monomicrostrip dipole antenna is a family of new electric mistrip antennas. The electric monomicrostrip dipole antenna consists of a thin electrically conducting element formed on one side of a dielectric substrate; the ground plane being on the other side of the substrate. The length of the radiating element is equal to the length of the ground plane, and the width of the ground plane extending beyond each side of the element at the width of the element (e.g., approximately 1/8 wavelength) to provide an isotropic radiation pattern. The thickness of the substrate to a large extent determines the bandwidth of the antenna, and the length of the conducting element and ground plane determines the resonant frequency.
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Citations
61 Claims
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1. A notched fed electric monomicrostrip dipole antenna structure comprising:
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a. a dielectric substrate; b. a thin rectangular radiating element disposed on one side of said dielectric substrate; c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element; d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited; f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the fields on both sides of the antenna being in phase;g. the length of said radiating element determining the resonant frequency of the antenna; h. said radiating element having a feed point located along the centerline of the length thereof; i. said radiating element having a notch extending into the element along the centerline of the length from one end thereof to said feed point; j. the antenna input impedance being variable to match most practical impedances as said feed point is moved along the element centerline without affecting the radiation pattern; k. the antenna bandwidth being variable with the width of said radiating element and the spacing between the radiating element and said ground plane, the width of said notch being a factor as to the effective width of said radiating element, said spacing between the radiating element and the ground plane having somewhat greater effect on the bandwidth than the width of said radiating element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15)
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10. An asymmetrically fed electric monomicrostrip dipole antenna structure for providing isotropic radiation, comprising:
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a. a dielectric substrate; b. a thin rectangular radiating element disposed on one side of said dielectric substrate; c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element; d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited; f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the fields on both sides of the antenna being in phase;g. the length of said radiating element determining the resonant frequency of the antenna; h. said radiating element having a feed point located long the centerline of the length thereof; i. the antenna input impedance being variable to match most practical impedances as said feed point is moved along the element centerline without affecting the radiation pattern; j. the antenna bandwidth being variable with the width of said radiating element and the spacing between the radiating element and said ground plane, said spacing between the radiating element and ground plane having the most effect. - View Dependent Claims (16, 17)
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18. An end fed electric monomicrostrip dipole antenna structure for providing isotropic radiation comprising:
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a. a dielectric substrate; b. a thin rectangular radiating element disposed on one side of said dielectric substrate; c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element; d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited; f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the field on both sides of the antenna being in phase;g. the length of said radiating element determining the resonant frequency of the antenna; h. said radiating element having a feed point located at an end of the length of the centerline thereof. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. An offset fed electric monomicrostrip dipole antenna structure for providing isotropic radiation comprising:
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a. a dielectric substrate; b. a thin rectangular radiating element disposed on one side of said dielectric substrate; c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element; d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited; f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the fields on both sides of the antenna being in phase;g. the length of said radiating element determining the resonant frequency of the antenna; h. said radiating element having a feed point located along an edge of the length thereof; i. the input impedance of said antenna being variable to match most practical impedances as said feed point is moved along the edge of the length of said radiating element without affecting the antenna radiation pattern; j. the antenna bandwidth being variable with the width of said radiating element and the spacing between the radiating element and said ground plane, said spacing between the radiating element and ground plane having the most effect. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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35. A diagonally fed electric monomicrostrip dipole antenna structure for providing isotropic radiation, comprising:
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a. a dielectric substrate; b. a thin rectangular radiating element disposed on one side of said dielectric substrate; c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element; d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited; f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the fields on both sides of the antenna being in phase;g. the length of said radiating element determining the resonant frequency of the antenna; h. said radiating element having a single feed point located along a diagonal line of the element between the outer edge and center point thereof; i. the input impedance of said antenna being variable to match most practical impedances as said feed point is moved along said diagonal line; j. the antenna bandwidth being variable with the width of said radiating element and the spacing between the radiating element and said ground plane, said spacing between the radiating element and ground plane having the most effect; k. said radiating element being operable to oscillate in two modes of current oscillation, said two modes being orthogonal to each other and with mutual coupling being minimal, the properties of each mode of oscillation being determined independently of one another;
the parallel combination of the input impedance of each mode providing a combined antenna input impedance;l. polarization of the antenna being linear when the radiating element length and width are equal, the antenna polarization being circular when the phase difference between the two modes of oscillation are in quadrature due to differences between the length and width of the radiating element. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43)
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44. A notched/diagonally fed electric monomicrostrip antenna structure, comprising:
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a. a dielectric substrate; b. a thin rectangular radiating element disposed on one side of said dielectric substrate; c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element; d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited; f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the fields on both sides of the antenna being in phase;g. the length of said radiating element determining the resonant frequency of the antenna; h. said radiating element having a single feed point located along a diagonal line of the element between the outer edge and center point thereof; i. said radiating element having a notch extending into said element from the outer edge thereof along said diagonal line to said feed point; j. the input impedance of said antenna being variable to match most practical impedances as said feed point is moved along said diagonal line; k. the resonant frequency of the antenna being determined primarily by the length of said radiating element;
the width of the notch having a slight effect on the resonant frequency, as the notch width is increased, the resonant frequency being slightly increased, and vice versa;l. said radiating element being operable to oscillate in two modes of current oscillation, said two modes being orthogonal to one another; m. said radiating element being operable to oscillate in two modes of current oscillation, said two modes being orthogonal to each other with mutual coupling being minimal, the properties of each mode of oscillation being determined independently of one another;
the parallel combination of the input impedance of each mode providing a combined antenna imput impedance. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52)
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53. An electric monomicrostrip dipole antenna structure, comprising:
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a. a dielectric substrate; b. a thin radiating element disposed on one side of said dielectric substrate; c. a thin non-radiating ground plane conductor disposed on the other side of said dielectric substrate directly opposite to said radiating element; d. said ground plane being identical in length to the length of said radiating element;
said ground plane and said radiating element being aligned lengthwise;e. said ground plane extending in width on each side beyond the width of said radiating element to cause a mismatch such that the ground plane will not be excited; f. said radiating element operable to be excited to radiate about both the element and the ground plane side of the antenna in a near isotropic manner;
the fields on both sides of the antenna being in phase;g. the length of said radiating element determining the resonant frequency of the antenna; h. said radiating element being any of asymmetrically fed, notch fed, offset fed, diagonally fed, notched/diagonally fed, and offset/notch fed at a feed point located on the element; i. the input impedance of said antenna being variable to match most practical impedances as said feed point is moved on the radiating element; - View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
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54. j. the antenna bandwidth being variable with the width of said radiating element and the spacing between the radiating element and said ground plane, said spacing between the radiating element and ground plane having the most effect.
Specification