CN115911835A - Novel square fractal patch antenna - Google Patents

Novel square fractal patch antenna Download PDF

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Publication number
CN115911835A
CN115911835A CN202211141901.3A CN202211141901A CN115911835A CN 115911835 A CN115911835 A CN 115911835A CN 202211141901 A CN202211141901 A CN 202211141901A CN 115911835 A CN115911835 A CN 115911835A
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fractal
order
regular polygon
patch antenna
hole
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陈永忠
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University of Electronic Science and Technology of China
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University of Electronic Science and Technology of China
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention discloses a novel square fractal patch antenna, which comprises a novel square fractal patch antenna, a substrate, a feeder line and a floor, wherein the substrate is arranged on the substrate; the novel square fractal patch antenna is a fractal shape based on a fractal geometric theory, an ideal first-order fractal digs a fractal regular polygon hole at the center of a basic regular polygon with n sides, the vertex of the hole is coincided with the middle point of the side length of the basic regular polygon, the fractal iteration factor is cos (pi/n), and n is a natural number greater than 2; the second-order fractal is based on the first order, a regular polygon entity is filled in the center of the side length of the basic regular polygon, the vertex of the regular polygon entity is superposed with the middle point of the side length of the first-order regular polygon, in the practical application, an ideal regular polygon fractal hole or fractal entity of each order is amplified or reduced by taking the center of the fractal hole or fractal entity of each order as a base point, and the hole or filled entity of each order of fractal can rotate by an angle beta by taking the geometric center of the hole or filled entity of each order as a rotation center; the feeder line is formed by connecting straight lines and regular polygonal annular microstrip lines in a coplanar coupling feeding mode.

Description

Novel square fractal patch antenna
Technical Field
The invention relates to a patch antenna, in particular to a novel square fractal patch antenna.
Background
The patch antenna is widely used in the field of communications, is an antenna with a small profile and easy to conform, but for a low frequency band below a radio frequency band, such as an L-band, a plane size is large, and it is often desired that the plane size is more miniaturized.
The square patch antenna has a method of miniaturization using a fractal approach, but the fractal approach can be more diversified.
Disclosure of Invention
The invention aims to provide a novel square fractal patch antenna to solve the problem of miniaturization of the conventional square patch antenna.
Therefore, the invention provides a novel square fractal patch antenna which comprises a novel square fractal patch antenna (1), a substrate (2), a feeder line (3), a floor (4) and the like.
The novel square fractal patch antenna comprises a novel square fractal patch antenna body (1), wherein a fractal regular polygon hole is dug in the center of a basic regular polygon with a complete reference side length L according to a fractal geometric theory, fractal regular polygon entities are filled alternately, the number of polygon sides is n, a fractal iteration factor is cos (pi/n), n is a natural number larger than 2, in the embodiment of the invention, n is 4,L which is 30mm, and the iteration factor is cos (pi/4) =1/sqrt (2); ideal first-order fractal digging a side n with a side length L at the center of a basic regular polygon 01 A regular polygon hole of = L × cos (pi/n), one vertex of a regular polygon of the first-order fractal regular polygon hole coincides with a midpoint of one side of a basic regular polygon with a side length of L, and the remaining vertices also coincide with midpoints of corresponding sides of the basic regular polygon, an included angle between one side of the first-order regular polygon hole connecting the point and a side of the basic regular polygon passing through the point is α, α =180 °/n, and α =45 °; ideal second-order fractal is based on ideal first-order fractal, and the side length is L 01 The first-order regular polygon hole is filled with n sides and L sides 02 ＝L 01 X cos (pi/n) regular polygon entity, one vertex and side length of regular polygon of the second-order fractal regular polygon entity are L 01 The middle point of one side of the first-order regular polygon hole is coincided, the other vertexes are coincided with the middle point of the corresponding side of the first-order regular polygon, the included angle formed by the second-order regular polygon entity connecting one side of the point and the first-order regular polygon hole passing through the side of the point is alpha, alpha =180 °/n, and alpha =45 °; ideal third-order fractal is based on ideal second-order fractal, and the side length is L 02 The second-order regular polygon has n sides in the center and L sides 03 ＝L 02 X cos (pi/n) regular polygon, one vertex and side length of the regular polygon of the third-order fractal regular polygon are L 02 The middle points of one edge of the second-order regular polygon entity are coincidedThe other vertexes are also superposed with the middle points of the corresponding sides of the second-order regular polygon, the included angle formed by the third-order regular polygon hole connecting one side of the point and the second-order regular polygon entity passing through the side of the point is alpha, alpha =180 °/n, and the embodiment of the invention is alpha =45 °; by analogy, on the basis of the previous-order fractal, digging holes or filling entity fractal can be alternately carried out in the center of the patch antenna, and four-order or five-order … … can be provided; on the basis, the holes or filled entities of each order of fractal can rotate by an angle beta by taking the geometric center as a rotation center, wherein the value range of the beta is [0 DEG ], and the angle is 360 DEG]Inventive example β =0 °; in practical application, the delta is enlarged or reduced by taking the center of the ideal first-order regular polygon fractal hole as a base point 1 Cutting and crushing in an intersecting way to enable the basic regular polygon and the first-order fractal regular polygon to be locally and integrally self-similar; on the basis of first-order fractal, in practical application, delta is enlarged or reduced by taking the center of an ideal second-order regular polygon fractal entity as a base point 2 Multiplying and filling to make the second-order fractal regular polygon and the first-order regular polygon, and the basic regular polygon partially and wholly self-similar; so that three steps and four steps … … can be provided; example of the invention delta 1 Approximately equal to 0.9796mm (reduced), first-order fractal hole side length L 1 ＝20.78mm，δ 2 Approximately equal to 0.9855mm (reduced), second order fractal solid side length L 2 The thickness of the novel square fractal patch antenna (1) is 0.01mm, and the material is gold.
The novel square fractal patch antenna is characterized in that the substrate (2) is silicon dioxide with the side length of 55mm square and the thickness of 1.5mm, and the novel square fractal patch antenna (1) is positioned in the center of the upper surface of the substrate (2) and one side of the novel square fractal patch antenna is parallel to the side line of the substrate (2).
The novel square fractal patch antenna is characterized in that the feeder (3) is positioned in the middle of a first-order fractal regular polygonal hole of the novel square fractal patch antenna (1) on the upper surface of the substrate (2) and is coplanar with the novel square fractal patch antenna (1), a coplanar coupling feeding mode is adopted, the feeder (3) is formed by connecting a section of linear microstrip line and a section of regular polygonal annular microstrip line, and the central line of the microstrip line is connected with the basic regular polygon of the novel square fractal patch antenna (1)The center of the microstrip line is aligned and perpendicular to a side parallel to a basic regular polygon of the novel square fractal patch antenna (1) and a side of the substrate (2), the geometric center of the regular polygon ring section microstrip line coincides with the center of the corresponding first-order fractal regular polygonal hole, the outer side of the regular polygon ring section microstrip line is parallel to the corresponding first-order fractal regular polygonal hole side of the novel square fractal patch antenna (1) and has an equidistant gap, the line widths of the straight line section microstrip line and the regular polygon ring section microstrip line are equal, and delta is reduced in the first-order regular polygonal hole in practical application 1 During doubling, equidistant slots gap are formed in two sides of the straight-line segment microstrip line and are identical to and communicated with the equidistant slots gap of the regular polygon annular segment microstrip line and the first-order fractal regular polygon hole, and the line width and the slots gap of the microstrip line are calculated through simulation; the thickness of the feeder (3) of the embodiment of the invention is 0.01mm, and the line width W of the first-order fractal time patch antenna feeder (3) 1 =0.06mm, gap is gap in first-order fractal 1 =0.04mm; line width W of second-order fractal time patch antenna feeder (3) 2 =0.06mm, gap is gap when second-order fractal 2 And the feed line (3) is made of gold by the material of =0.03 mm.
The invention relates to a novel square fractal patch antenna, wherein a floor (4) is made of gold with the side length of 55mm square and the thickness of 0.01mm, and the gold is positioned on the lower surface of a substrate (2) and aligned with the substrate (2).
The novel square fractal patch antenna is characterized in that a comparison reference is that gold is used as a material, a complete basic square patch antenna with the side length of L =30mm and the thickness of 0.01mm adopts the same silicon dioxide substrate with the side length of 55mm square and the thickness of 1.5mm, a floor is made of gold with the side length of 55mm square and the thickness of 0.01mm, the basic square patch antenna is positioned in the center of the upper surface of the substrate, one side of the basic square patch antenna is parallel to the side line of the substrate, and the floor is positioned on the lower surface of the substrate and is aligned with the substrate; the feed mode is the coplanar contact feed of the conventional microstrip line, the feeder line is positioned on the upper surface of the substrate and is coplanar with the patch antenna, the tail end of the microstrip line is perpendicular to the side of the basic square patch antenna parallel to the side line of the substrate and is connected with the midpoint of the microstrip line, the thickness of the feeder line in the embodiment of the invention is 0.01mm, and the line width is 0.07mm through simulation calculation.
According to the novel square fractal patch antenna, a first-order novel square fractal patch antenna in the practical application of the embodiment of the invention is resonated at 1.61GHZ through simulation calculation of HFSS electromagnetic field simulation software, and the return loss of S11 is-32.604485 db; a second-order novel square fractal patch antenna resonates at 1.61GHZ through simulation calculation of HFSS electromagnetic field simulation software, and the return loss of S11 is-22.946135 db; comparing a basic square patch antenna with a reference side length of L and completely resonating at 2.43GHZ by simulation calculation of HFSS electromagnetic field simulation software, wherein the return loss of S11 is-12.399686 db; the first order is equivalent to 33.7% of size reduction of a novel square fractal patch antenna with the relative reference side length L being complete, and the second order is equivalent to 33.7% of size reduction of a novel square fractal patch antenna with the relative reference side length L being complete.
Drawings
FIG. 1: the second-order practical application of the specific embodiment of the invention is a shape schematic diagram of a novel square fractal patch antenna;
FIG. 2: the first-order practical application of the specific embodiment of the invention is a shape schematic diagram of a novel square fractal patch antenna;
FIG. 3: the invention discloses a schematic diagram of ideal first-order and second-order fractal shapes of a novel square fractal patch antenna;
FIG. 4: the second-order practical application of the specific embodiment of the invention is a schematic diagram of a three-dimensional model of a novel square fractal patch antenna in HFSS simulation software and a simulation result of S11 parameters;
FIG. 5 is a schematic view of: the specific implementation scheme of the invention is that a three-dimensional model of a novel square fractal patch antenna in HFSS simulation software and a simulation result schematic diagram of S11 parameters are actually applied to the first order;
FIG. 6: the specific implementation scheme of the invention is that the comparison refers to a three-dimensional model of a basic square patch antenna with complete side length L in HFSS simulation software and a schematic diagram of S11 parameter simulation results;
FIG. 7: the specific implementation scheme of the invention is that a first-order practical application of a novel square fractal patch antenna is shown in a simulation result diagram of S11 parameters in 1-12GHZ scanning simulation with 1.61GHZ as the center frequency in HFSS simulation software;
FIG. 8: the second-order practical application of the specific embodiment of the invention is a schematic diagram of S11 parameter simulation results of a novel square fractal patch antenna in 1-12GHZ scanning simulation with 1.61GHZ as the center frequency in HFSS simulation software.
Detailed Description
As shown in fig. 1-5: the novel square fractal patch antenna (1) alternately digs a fractal regular polygon hole and fills a fractal regular polygon entity at the center of a basic regular polygon with complete reference side length L according to a fractal geometric theory, wherein the number of polygon sides is n, a fractal iteration factor is cos (pi/n), n is a natural number greater than 2, in the embodiment of the invention, n is 4,L (30 mm), and the iteration factor is cos (pi/4) =1/sqrt (2); the ideal first-order fractal digs a side n with the side length L at the center of a basic regular polygon 01 A regular polygon hole of = L × cos (pi/n), one vertex of a regular polygon of the first-order fractal regular polygon hole coincides with a midpoint of one side of a basic regular polygon with a side length of L, and the remaining vertices also coincide with midpoints of corresponding sides of the basic regular polygon, an included angle between one side of the first-order regular polygon hole connecting the point and a side of the basic regular polygon passing through the point is α, α =180 °/n, and α =45 °; ideal second-order fractal is based on ideal first-order fractal, and the side length is L 01 The center of the first-order regular polygon hole is filled with n sides and L sides 02 ＝L 01 X cos (pi/n) regular polygon entity, one vertex and side length of regular polygon of the second-order fractal regular polygon entity are L 01 The middle point of one side of the first-order regular polygon hole is coincided, the other vertexes are coincided with the middle points of the corresponding sides of the first-order regular polygon, the included angle formed by the second-order regular polygon entity connecting one side of the point and the first-order regular polygon hole passing through the side of the point is alpha, alpha =180 °/n, and alpha =45 ° in the embodiment of the invention; ideal third-order fractal is based on ideal second-order fractal, and the side length is L 02 The second-order regular polygon has n sides in the center and L sides 03 ＝L 02 X cos (pi/n) regular polygon, the positive of the third-order fractal regular polygonOne vertex and side length of the polygon is L 02 The middle point of one side of the second-order regular polygon entity is coincided, the other vertexes are coincided with the middle point of the corresponding side of the second-order regular polygon, the included angle formed by the third-order regular polygon hole connecting the one side of the point and the second-order regular polygon entity through the side of the point is alpha, alpha =180 °/n, and alpha =45 °; by analogy, on the basis of the previous-order fractal, digging holes or filling entity fractal can be alternately carried out in the center of the patch antenna, and four-order or five-order … … can be provided; on the basis, the holes or filled entities of each order of fractal can rotate by an angle beta by taking the geometric center as a rotation center, wherein the value range of the beta is [0 DEG ], and the angle is 360 DEG]Inventive example β =0 °; in practical application, the delta is enlarged or reduced by taking the center of the ideal first-order regular polygon fractal hole as a base point 1 Cutting and crushing in an intersecting way to enable the basic regular polygon and the first-order fractal regular polygon to be locally and integrally self-similar; on the basis of first-order fractal, in practical application, delta is enlarged or reduced by taking the center of an ideal second-order regular polygon fractal entity as a base point 2 Multiplying and filling to make the second-order fractal regular polygon and the first-order regular polygon, and the basic regular polygon partially and wholly self-similar; third-order and fourth-order … … can be analogized; example of the invention delta 1 Is approximately equal to 0.9796mm (reduced), and the side length L of the first-order fractal orifice 1 ＝20.78mm，δ 2 Approximately equal to 0.9855mm (reduced), second order fractal solid side length L 2 The thickness of the novel square fractal patch antenna (1) is 0.01mm, and the material is gold.
As shown in fig. 4 and 5: the novel square fractal patch antenna is characterized in that the substrate (2) is silicon dioxide with the side length of 55mm square and the thickness of 1.5mm, and the novel square fractal patch antenna (1) is positioned in the center of the upper surface of the substrate (2) and one side of the novel square fractal patch antenna is parallel to the side line of the substrate (2).
As shown in fig. 1-5: the novel square fractal patch antenna is characterized in that the feeder (3) is positioned in the middle of a first-order fractal regular polygonal hole of the novel square fractal patch antenna (1) on the upper surface of the substrate (2) and is coplanar with the novel square fractal patch antenna (1), a coplanar coupling feeding mode is adopted, the feeder (3) is a straight lineThe microstrip line is connected with a section of regular polygon annular microstrip line, the central line of the straight-line section microstrip line is aligned with the center of a basic regular polygon of the novel square fractal patch antenna (1), is perpendicular to the side parallel to the basic regular polygon of the novel square fractal patch antenna (1) and the side of the substrate (2) and passes through the midpoint of the straight-line section microstrip line, the geometric center of the regular polygon annular section microstrip line is superposed with the center of a corresponding first-order fractal regular polygon hole, the outer side line of the regular polygon annular section microstrip line is parallel to the corresponding first-order fractal regular polygon hole side line of the novel square fractal patch antenna (1) and has equidistant gaps gap, the line widths of the straight-line section microstrip line and the regular polygon annular section microstrip line are equal, and in practical application, the delta is reduced by one-order regular polygon in one-order 1 During doubling, equidistant slots gap are formed in two sides of the straight-line segment microstrip line and are identical to and communicated with the equidistant slots gap of the regular polygon annular segment microstrip line and the first-order fractal regular polygon hole, and the line width and the slots gap of the microstrip line are calculated through simulation; the thickness of the feeder (3) of the embodiment of the invention is 0.01mm, and the line width W of the feeder (3) of the patch antenna is W when the first-order fractal exists 1 =0.06mm, gap is gap in first-order fractal 1 =0.04mm; second-order fractal time patch antenna feeder (3) line width W 2 =0.06mm, gap is gap when second-order fractal 2 And the feed line (3) is made of gold by the material of =0.03 mm.
As shown in fig. 4 and 5: the invention relates to a novel square fractal patch antenna, wherein a floor (4) is made of gold with the side length of 55mm square and the thickness of 0.01mm, and the gold is positioned on the lower surface of a substrate (2) and aligned with the substrate (2).
As shown in fig. 8: the novel square fractal patch antenna is characterized in that a comparison reference is that gold is used as a material, a complete basic square patch antenna with the side length of L =30mm and the thickness of 0.01mm adopts the same silicon dioxide substrate with the side length of 55mm square and the thickness of 1.5mm, a floor is made of gold with the side length of 55mm square and the thickness of 0.01mm, the basic square patch antenna is positioned at the center of the upper surface of the substrate, one side of the basic square patch antenna is parallel to the side line of the substrate, and the floor is positioned on the lower surface of the substrate and is aligned with the substrate; the feed mode is the coplanar contact feed of the conventional microstrip line, the feeder line is positioned on the upper surface of the substrate and is coplanar with the patch antenna, the tail end of the microstrip line is perpendicular to the side of the basic square patch antenna parallel to the side line of the substrate and is connected with the midpoint of the microstrip line, the thickness of the feeder line in the embodiment of the invention is 0.01mm, and the line width is 0.07mm through simulation calculation.
As shown in fig. 6-8: according to the novel square fractal patch antenna, a first-order novel square fractal patch antenna in the practical application of the embodiment of the invention is resonated at 1.61GHZ through simulation calculation of HFSS electromagnetic field simulation software, and the return loss of S11 is-32.604485 db; a second-order novel square fractal patch antenna resonates at 1.61GHZ through simulation calculation of HFSS electromagnetic field simulation software, and the return loss of S11 is-22.946135 db; comparing a basic square patch antenna with a reference side length of L and completely resonating at 2.43GHZ by simulation calculation of HFSS electromagnetic field simulation software, wherein the return loss of S11 is-12.399686 db; the first order is equivalent to 33.7% of size reduction of a novel square fractal patch antenna with the relative reference side length L being complete, and the second order is equivalent to 33.7% of size reduction of a novel square fractal patch antenna with the relative reference side length L being complete.
The processing precision can be improved by adopting the processing mode of the MEMS.

Claims (2)

1. The utility model provides a novel square fractal patch antenna, includes novel square fractal patch antenna (1), basement (2), feeder (3), floor (4), its characterized in that:
a. the novel square fractal patch antenna (1) is characterized in that according to a fractal geometric theory, a fractal regular polygon hole is dug in the center of a basic regular polygon with complete reference side length L, fractal regular polygon entities are filled alternately, the number of polygon sides is n, a fractal iteration factor is cos (pi/n), n is a natural number greater than 2, an ideal first-order fractal digs a side number n in the center of the basic regular polygon, the side length is L 01 A regular polygon hole of = L × cos (pi/n), one vertex of the regular polygon of the first-order fractal regular polygon hole coincides with the middle point of one edge of the basic regular polygon with the side length of L, the other vertices coincide with the middle points of the corresponding edges of the basic regular polygon, and the first-order regular polygon hole connects one edge of the point and the included angle of the basic regular polygon passing through the edge of the pointIs alpha, alpha =180 DEG/n, ideal second-order fractal is based on ideal first-order, and the side length is L 01 The center of the first-order regular polygonal hole is filled with n sides and L sides 02 ＝L 01 X cos (pi/n) regular polygon entity, one vertex and side length of regular polygon of the second-order fractal regular polygon entity are L 01 The middle point of one side of the first-order regular polygon is coincided, the other vertexes are coincided with the middle points of the corresponding sides of the first-order regular polygon, the included angle between the side of the second-order regular polygon entity, which is connected with the point, and the side of the first-order regular polygon passing through the point is alpha, alpha =180 DEG/n, ideal third-order fractal is on the basis of ideal second order, and the side length is L 02 The second-order regular polygon has n sides in the center and L sides 03 ＝L 02 A regular polygon of x cos (pi/n), one vertex and side length of the regular polygon of the third-order fractal regular polygon are L 02 The middle point of one side of the second-order regular polygon entity is coincided, the other vertexes are coincided with the middle point of the corresponding side of the second-order regular polygon, the included angle between the side of the third-order regular polygon hole connecting the point and the side of the second-order regular polygon entity passing the point is alpha, alpha =180 DEG/n, and the like, on the basis of the former first-order fractal, hole digging or solid filling fractal is alternately carried out in the center of the patch antenna, four-order and five-order … … can be provided, on the basis, the hole or the solid filling of each fractal can rotate by an angle beta by taking the geometric center as the rotation center, and the value range of the beta is [0 DEG, 360 DEG]；
b. In practical application, the delta is enlarged or reduced by taking the center of the ideal first-order regular polygon fractal hole as a base point 1 Cutting and crushing in an intersecting way to enable the basic regular polygon and the first-order fractal regular polygon to be locally and integrally self-similar; on the basis of first-order fractal, in practical application, delta is enlarged or reduced by taking the center of an ideal second-order regular polygon fractal entity as a base point 2 Multiplying and filling to ensure that the second-order fractal regular polygon is locally and integrally self-similar to the first-order regular polygon and the basic regular polygon, and so on, third-order and fourth-order … … can be provided;
c. the feeder (3) is positioned on the novel square fractal patch antenna on the upper surface of the substrate (2)The middle of a first-order fractal regular polygonal hole of a line (1) is coplanar with a novel square fractal patch antenna (1), a coplanar coupling feed mode is adopted, a feeder line (3) is formed by connecting a section of linear microstrip line and a section of regular polygonal annular microstrip line, the central line of the linear microstrip line is aligned with the center of a basic regular polygon of the novel square fractal patch antenna (1) and is vertical to a side parallel to the basic regular polygon of the novel square fractal patch antenna (1) and a side parallel to a side of a substrate (2), and passes through the midpoint of the linear microstrip line, the geometric center of the regular polygonal annular microstrip line is superposed with the center of the corresponding first-order fractal regular polygonal hole, the outer side of the regular polygonal annular microstrip line is parallel to the side of the corresponding first-order fractal regular polygonal hole of the novel square fractal patch antenna (1) and has an equidistant gap, the line widths of the linear microstrip line and the regular polygonal annular line are equal, and the first-order regular polygonal hole is reduced by delta in practical application 1 And during doubling, equidistant slots gap are formed on two sides of the straight-line segment microstrip line and are identical to and communicated with the equidistant slots gap of the regular polygon annular segment microstrip line and the first-order fractal regular polygon hole.
2. The novel square fractal patch antenna as claimed in claim 1, wherein: the antenna has the effect of reducing the size relative to a basic square patch antenna with the complete side length L, when the side length L of the basic regular polygon is 30mm, the number n of the sides is 4, the iteration factor cos (pi/n) is cos (pi/4) =1/sqrt (2), alpha =45 degrees, beta =0 degrees, the substrate (2) is silicon dioxide with the side length of 55mm square and the thickness of 1.5mm, the thicknesses of the novel square fractal patch antenna (1), the feeder line (3) and the floor (4) are 0.01mm, and the materials are all gold, the line width of the feeder line (3) of the first-order fractal in practical application is 0.06mm, and the gap is gap when the first-order fractal is formed 1 ＝0.04mm，δ 1 Approximately equal to 0.9796mm (reduced), first-order fractal hole side length L 1 =20.78mm, in practical application, the line width of the second-order fractal feeder (3) is 0.06mm, and the gap during the second-order fractal is gap 2 ＝0.03mm，δ 1 Ca 0.9796mm (scaled down), delta 2 Approximately equal to 0.9855mm (reduced), second order fractal solid side length L 2 =14.48mm, the first order novel square fractal patch antenna is subjected to simulation calculation of harmonic by HFSS electromagnetic field simulation softwareThe novel square fractal patch antenna vibrates at 1.61GHZ, the return loss of S11 is-32.604485 db, the second-order novel square fractal patch antenna resonates at 1.61GHZ through simulation calculation of HFSS electromagnetic field simulation software, the return loss of S11 is-22.946135 db, the basic square patch antenna with the complete reference side length L resonates at 2.43GHZ through simulation calculation of HFSS electromagnetic field simulation software, the return loss of S11 is-12.399686 db, the first-order novel square fractal patch antenna has 33.7% of size reduction relative to the basic square patch antenna with the complete reference side length L, and the second-order novel square fractal patch antenna has 33.7% of size reduction relative to the basic square patch antenna with the complete reference side length L.
CN202211141901.3A 2022-12-05 2022-12-05 Novel square fractal patch antenna Pending CN115911835A (en)

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CN115911835A true CN115911835A (en) 2023-04-04

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