TWI272742B - Circularly polarized slotloop and patch antennas fed by coplanar waveguide - Google Patents

Abstract

A new circularly polarized slotloop antenna fed by coplanar waveguide is disclosed. By applying an air bridge structure, the existing technical difficulty, that circularly polarized radiation can not be generated by slotloop antenna directly fed by coplanar waveguide, is solved. Besides, a new T-shaped feeding structure is disclosed for feeding a single patch antenna by a single slotline. A coplanar waveguide fed patch antenna array is also formed and disclosed by connecting two slotlines to the coplanar waveguide. Furthermore, the bandwidth, of the antenna array, is enhanced by the new designed coplanar waveguide feeding network, which satisfies the requirements of the sequential rotation technique.

Description

1272742 ------ V. DESCRIPTION OF THE INVENTION (1) Field of the Invention The present invention relates to a ring groove/microstrip antenna, and more particularly to a circularly polarized ring groove/microstrip fed using a coplanar waveguide. antenna. - Prior Art A planar antenna has been widely used in various communication systems due to its small size, conformability, low cost, weight, and ease of fabrication: firstly, a circularly polarized planar antenna. Because it has the characteristics of anti-multiple reflection path and is not affected by the rotation direction between the transmitter and receiver, it has high practical value in various communication systems. Among the planar split antennas, the ring groove and the microstrip antenna are the most commonly used Λ plane ^ antennas. In the past, there were many circularly polarized ring grooves that were fed using coaxial lines (c 〇a X ia 1 ii 2 or 12) or microstrip lines. The antenna was proposed, but a coplanar waveguide was used. The circularly polarized ring groove and the microstrip antenna fed by p 1 anar waveguide are very rare. The surface oil is less and/or $ I has been paid more and more attention in recent years. The main reason is that the coplanar waveguide I # radiation loss, low dispersion And its planar structure is easy to be combined with the solid state electronic element = positive: 1. The coplanar waveguide can be connected in series with the active and passive components and the outside of the ear can be used without the through hole (via hο 1 e) through the substrate. The wire 疋 transmits the necessary components in the receiver, so the use of the coplanar waveguide feeds the Ø-polarized ring groove and the microstrip antenna has the advantage of easy integration with the system. @I 'The circularly polarized ring groove fed by the coplanar waveguide And the κ embodiment of the microstrip antenna is as follows. 丨E · T · R ahardj〇, S · K ita〇, and M. HaneiShi, n Circularly polarized planar antenna excited by cross — slot coupled cop 1anar waveguide

Page 6 1272742 V. Description of invention (2) feedline, ▼丨IEEE AP-S Dig.,ρρ· 2 2 2 0 - 2 2 2 3,1 9 9 4·"Use "-h-shaped slotting ( Cr 〇ss - s 1 〇t) is between the coplanar waveguide and the microstrip antenna to excite the microstrip antenna to generate a circularly polarized radiation signal. However, this embodiment must use a two-layer substrate, which is complicated to manufacture. "S. Mat suz a wa and Κ · I to, 丨, Circularly polarised printed antenna fed by coplanar waveguide," Electron. Lett., vo1. 32, pp. 2035-2036, 1996 ." with nS· Matsuzawa, And K. Ito, nFDTD analysis of circularly polarized slot array antenna fed by coplanar waveguide, n IEEE AP-S Dig·, pp. 1 2 6 4- 1 2 6 7, 1 9 9 7.11 Using coplanar waveguide and slot line coupling Connected to a single ring-slot antenna from a single slot line to form a ring-slot antenna array with a coplanar waveguide feed. However, this embodiment cannot directly feed a single ring-slot antenna using a coplanar waveguide, and must be coplanar waveguide and slot line. Coupling and feeding into the ring-slot antenna, causing limitations in use. π Y · T urki, C. M ig 1 iacci 〇, and JM Laheurte, M Circularly polarised square patch antenna fed by coplanar waveguide, n Electron· Lett·, V〇l. 33, pp. 132 Bu 1 3 2 3, 1 9 9 7. The coplanar waveguide is coupled to the slot line and fed by a pair of slot lines into a single microstrip antenna. However, this embodiment cannot be used. Single slot line feeds into a single microstrip antenna and ' A larger area, so there are a lot of restrictions on practical .π Η ·

Iwasaki and N. Chiba, n Circularly polarised back-to-back microstrip antenna with an omnidirectional pattern, MI EE Proc. -Microw. Antennas Propag. , vo 1. 14 6, pp. 2 7 7 - 2 8 1, Aug. 1 9 9 9. ”Direct feed using coplanar waveguide

1272742 V. INSTRUCTIONS (3) A pair of microstrip antennas located above and below the coplanar waveguide to excite the pair of microstrip antennas to produce circularly polarized radiation. However, this embodiment cannot feed a single microstrip antenna and must use a dual layer dielectric substrate, thus using a range of applications limited to omni-direction radiation. Further, it is known that the frequency of the circularly polarized microstrip antenna is rather narrow, resulting in inconvenience in practical use and use. nP. S. Hall, "Application of sequential feeding to wide bandwidth, circularly polarised microstrip patch arrays,π IEE Proc.-Microw. Antennas Propag., v〇l. 136, pp. 390-398, Aug. 1989. n The microstrip antenna array is configured in a Sequential Rotation manner to increase the bandwidth. However, the method of sequential rotation is a theoretical architecture, and the actual application will still vary according to different transmission lines. Since the past flE. T. Rahardjo, S. K ita ο, and M. Haneishi, M Circularly polarized planar antenna excited by cross-slot coup 1ed c〇planar waveguide feedline," IEEE AP-S Dig., pp· 2220- 2223, 1994. "Coplanar waveguide feed networks for sequential rotation configurations are not suitable for slot-feed microstrip antennas. Therefore, it is necessary to follow the principle of sequential rotation and the characteristics of coplanar waveguides and slot lines. A novel coplanar waveguide feed network is designed. SUMMARY OF THE INVENTION In view of the above problems, the main object of the present invention is to provide a circularly polarized ring-slot antenna fed by a coplanar waveguide ( Slotl〇〇p

Page 8 1272742 V. Inventive Note (4) An t enna), in order to solve the prior art, the coplanar waveguide directly fed into the ring groove antenna can not simultaneously generate circularly polarized radiation in the same frequency band and achieve Techniques for Good Impedance Matching #f Problem In view of the above problems, another object of the present invention is to provide a circularly polarized microstrip antenna (co-polarized microstrip antenna) for coplanar waveguide feeding, thereby solving the prior art A coplanar waveguide fed into a microstrip antenna array on a single substrate cannot provide the same frequency band with the technical problem of simultaneously generating circularly polarized radiation and achieving good impedance matching. Therefore, the present invention discloses a ring groove. Antenna segment, the coplanar waveguide according to the present disclosure includes a line for feeding a slot line in accordance with the present disclosure; a coplanar according to the principles disclosed herein, in order to achieve the present invention The primary purpose of the circularly polarized ring-slot antenna fed by the coplanar waveguide is to include 'having at least one perturbation (pertur) Bation to generate a circularly polarized radiation signal; a coplanar waveguide, a signal feed end of the coupling line (feed - i η ρ 〇 siti ο η); an air bridge structure for connecting the two separated Ground plane. The principle of the invention is a first embodiment of the circularly polarized microstrip antenna fed by the surface waveguide of the present invention, a slot 1 ine is fed thereto. The microstrip antenna and the second microstrip antenna respectively have a first slot line and a second slot waveguide 'coupled to the first slot line and the second slot line. The principle of the invention is to achieve the invention Another object, a second embodiment of a circularly polarized microstrip antenna fed by a surface waveguide of the present invention,

1272742 V. Description of the invention (5) includes a microstrip antenna with a first slot line feed, a microstrip antenna fed by a second slot line, a microstrip antenna fed by a third slot line, and a fourth slot line The microstrip antennas have a first slot line, a second slot line, a third slot line and a fourth slot line, and a coplanar waveguide coupled to the first slot line and the second slot line. According to the principle of the present invention, in order to achieve another object of the present invention, a third embodiment of the circularly polarized microstrip antenna fed by the coplanar waveguide of the present invention includes a microstrip antenna having a first slot line feed. a microstrip antenna fed by the second slot line, a microstrip antenna fed by the third slot line, and a microstrip antenna fed by the fourth slot line respectively have a first slot line and a second slot line a third slot line and a fourth slot line; a phase delay coplanar waveguide, one side coupled to the first slot line and the third slot line, the other side coupled to the second slot line and the a fourth slot line; an impedance-graded coplanar waveguide coupled to the phase-delay coplanar waveguide; and a coplanar waveguide coupled to the impedance-graded coplanar waveguide. According to the principle of the present invention, in order to achieve another object of the present invention, a fourth embodiment of the circularly polarized microstrip antenna fed by the coplanar waveguide of the present invention includes a microstrip antenna having a first slot line feed. a microstrip antenna fed into a second slot line, respectively having a first slot line and a second slot line; a first phase delay slot line coupled to the first slot line; a coplanar waveguide, The first phase delay slot line and the second slot line are coupled. According to the principle of the present invention, in order to achieve another object of the present invention, a fifth embodiment of the circularly polarized microstrip antenna fed by the coplanar waveguide of the present invention includes a microstrip antenna having a first slot line feed. a microstrip antenna fed by a second slot line, a microstrip antenna fed by a third slot line, and a fourth slot line feed

Page 10 1272742 5. The microstrip antenna of the invention (6) has a first slot line, a second slot line, a third slot line and a fourth slot line, respectively; a first phase delay slot line, Connected to the first slot line; a second phase delay slot line coupled to the fourth slot line; a phase delay coplanar waveguide, one side coupled to the first phase delay slot line and The third slot line is coupled to the second slot line and the second phase delay slot line; an impedance-graded coplanar waveguide coupled to the phase-delay coplanar waveguide; a coplanar waveguide coupled to The impedance is a gradient coplanar waveguide. According to the main object of the present invention, a coplanar waveguide is used to feed a ring-slot antenna, an empty bridge structure is used, a perturbation of the ring-slot antenna is performed, and an impedance matching circuit is designed to generate circularly polarized radiation and achieve good impedance matching in the same frequency band. . According to another object of the present invention, a coplanar waveguide is coupled to a slot line, and the slot line feed structure disclosed in the present invention is used to feed a single microstrip antenna into a single slot line to form a coplanar waveguide feeding microstrip antenna. The array, in conjunction with perturbing the microstrip antenna, produces circularly polarized radiation and achieves good impedance matching in the same frequency band. The detailed features and advantages of the present invention will be described in detail in the embodiments of the present invention. The contents disclosed in the specification, the scope of the patent application, and the drawings are understood. The above description of the present invention and the following description of the embodiments of the present invention are intended to illustrate and explain the principles of the invention. [Embodiment]

1272742 V. DESCRIPTION OF THE INVENTION (7) Regarding the features and implementations of the present invention, the preferred embodiments are illustrated in the following detailed description. Please refer to FIG. 1 , which is a schematic structural view of a circularly polarized ring-slot antenna fed by a coplanar waveguide according to the main object of the present invention. As shown in the figure, a circularly polarized ring-shaped antenna 10, a coplanar waveguide structure 20, and an empty bridge structure 30 are formed on a substrate 40, and the upper surface of the upper and lower surfaces of the substrate 40 The metal surface and the lower surface are bare substrate materials, and the circularly polarized ring-shaped antenna 10 and the coplanar waveguide structure 20 are formed from the metal surface. The circularly-polarized ring-slot antenna 10 is formed by forming an annular groove structure 11 from the metal surface and exposing the substrate material. The annular groove structure 1 1 may be square or circular, for example. The circularly-polarized ring-slot antenna 10 has a perturbation portion 1 2, and the 1 3 'memory portion is a mutually symmetrical shape structure' to generate a circularly polarized radiation signal. The circularly-polarized ring-slot antenna 10 has a signal feed end, and the coplanar waveguide structure 20 is directly coupled to the circularly-polarized ring-slot antenna 10 at the signal feed end. The coplanar waveguide structure 20 is formed by forming two groove-shaped groove structures downward from the metal surface to expose the substrate material to form a coplanar waveguide structure. Therefore, the substrate 40 around the outer surface of the coplanar waveguide structure 20 The metal surface becomes two separate ground planes. The coplanar waveguide structure 20 has a high-impedance portion 20 A 'connected between the bad-shaped groove structure and the coplanar waveguide structure for feeding the signal of the circularly-polarized ring-slot antenna 10 The impedance matches the impedance of the coplanar waveguide structure 20. The empty bridge structure 30 is approximately located at the signal feed end for conducting two mutually separated ground planes in the coplanar waveguide structure 20. In accordance with the principles of the present invention, the empty bridge structure 30, for example, can be a wire or foil. By adjusting the perturbation part 1 2, 1 3 in a circularly polarized ring groove

Page 12 1272742 V. INSTRUCTIONS (8) · The position in antenna 10 can form a right-hand circularly polarized radiation signal or a left-hand circularly polarized radiation signal. The structure of the circularly polarized ring groove antenna fed by the coplanar waveguide disclosed in "Fig. 1" is shown in the following paragraphs. According to the principles of the present invention, the circularly polarized ring-groove antenna is fed by a coplanar waveguide. For example, the substrate 40 may be an FR4 substrate having a dielectric constant (ε r) of 4.3 and a thickness of 1.6 m. The coplanar waveguide structure 20, for example, has a central strip line width of 2.5 mm and a groove width of 0.25 mm, which forms an impedance of about 50 ohms. The circularly polarized ring-slot antenna 10, for example, has a radius r of 8 mm and a width s of 2 mm. The width lengths of the two symmetrical, face-to-face configuration perturbations 1 2, 1 3 are, for example, 4 mm and 5 mm, respectively, with the X-axis of "Fig. 1" as the angle reference line, and two perturbations. The parts are located at 4 5 ° and 2 2 5 ° respectively to generate a right-hand circularly polarized Korean signal. If they are located at 1 3 5 ° and 3 1 5 °, respectively, a left-hand circularly polarized radiation signal can be generated. The length of the high-impedance portion 20 A used as the impedance matching, the center strip line width, and the groove width are determined according to the transmission line theory. In the present embodiment, the selected length is 16.5 mm, the central strip line width is 0.5 mm, and the groove width is 1.25 mm. The impedance of the circularly polarized ring-slot antenna 10 at the signal feed end can be matched to the 50 ohm impedance of the coplanar waveguide structure 20 via the high impedance portion conversion. In order to clearly compare the difference in the structure of the empty bridge, the above embodiments and another antenna having the same structure but no empty bridge structure were respectively tested. The axial ratio of the far-field radiation signal (aX i a 1 r a t i 〇) is in the vertical direction

Page 13 1272742 V. Description of invention (9) Test to the (broadside direction). For the test results of the frequency, please refer to "Fig. 2". The upper curve in the figure is the measurement result without the empty bridge structure, the lower part The curve is the measurement result of the empty bridge structure. Generally speaking, the axial ratio of the circularly polarized signal must be at least 3 dB, and the axial ratio of 0 dB is a perfect circularly polarized signal. It can be found from the figure that the measurement results with the empty bridge structure have a minimum axial ratio of 0.37 G Η z. The d d, 3 d B axis ratio bandwidth is from 3.73 GHz to 3. 89 GHz, greater than 4%. In addition, it can be found from the figure that the measurement results without the empty bridge structure have an axial ratio of at least 15 dB between the frequency range of 3.6 GHz and 3.95 GHz. Therefore, the empty bridge structure can solve the technical problem that the coplanar waveguide directly feeds the signal to the ring antenna and cannot generate circularly polarized radiation. For the above-mentioned embodiment and the return loss (re turn 1 oss) of the antenna with the same structure but no empty bridge structure, please refer to "Fig. 3" for the test results of the frequency. Generally speaking, the return loss must be at least -1 0 dB or less. The bandwidth of the -1 0 dB return loss with an empty bridge structure is approximately 3.6 GHz to 4.06 GHz, and the center frequency of this bandwidth is approximately 3.83 GHz, which is quite close to the axial ratio of the antenna. The center frequency of the bandwidth is 3.8 GHz, and the return loss in the range of 3.73 GHz to 3.89 GHz is less than -2 0 dB. At the same time, it can be seen from the figure that the return loss of the antenna without the empty bridge structure is large, that is, more signals are reflected back. Please refer to FIG. 4, which is a radiation field diagram of the left and right hand circularly polarized signals measured on the xy plane of the circularly polarized ring-slot antenna fed by the coplanar waveguide disclosed in the present invention, and the electric field thereof. Right in the vertical direction

Page 14 1272742 匕 发, invention description (1〇) and left hand circular polarization in the vertical direction. It can be seen from the figure that the circularized ring-slot antenna fed by the coplanar waveguide according to the present invention has good polarization characteristics. Continuation, please refer to FIG. 5, which is a first embodiment of a circularly polarized microstrip antenna fed in accordance with the present invention, which is a microstrip antenna and a first slot line J. The second slot line is fed with a microstrip antenna comprising a coplanar waveguide structure 2:1, a first microstrip radiator 5 1 and a second microstrip field, 52, respectively having two perturbations 5 u, 5 1 2 and 5 2 1 , 5 2 2, wherein the first microstrip radiator 5 1 and the second microstrip radiator 52 are located on a substrate 4 丄 = the same upper surface, and the first microstrip radiator 5 1 In contrast to the second microstrip radiator 5 2, for example, it may be square or circular. The i-coplanar waveguide structure 21 is coupled to a first slot line 61 and a second slot line 62. The signal is fed into the first two y-radiator 5 1 via the first slot line 61 and the second slot line 62 respectively. The second microstrip radiator 52. The first groove line 6丨 and the second groove 2 may be of equal length to achieve the effect of synchronously exciting the first and second microstrip radiators 52. In addition, a first signal is disposed between the first microstrip light projecting body 51: a flute, and a first and second feeding structure is disposed between the first slot line 62 and the second microstrip radiator 52. 72. The first signal feed structure 71, for example, is a T-shaped shape, including a short-circuited slot end (shorted end ^ 2 \SeCtl〇n) Π 1 and a short-circuited slot end 712, which is used to The slot (4) enters the microstrip day and reaches between the slot line and the microstrip antenna]: Γ2: The number of the town entrance structure 71 serves as the impedance matching between the first slot line 61 and the first-second W body 51, and the second signal Feeding structure 72 as

Page 15 1272742 V. INSTRUCTION DESCRIPTION (11) Impedance matching between slot line 62 and second microstrip radiator 52. The signal feed structure mentioned in the following paragraphs has the same structure or similar structure as the first signal feed structure 7 1 , for example, may be T-shaped, including two short-circuit slot ends. The second microstrip radiator 52 can also be regarded as a load. The first slot line 6 1 and the second slot line 6 2 are angle reference lines respectively disposed on the perturbation parts 5 1 1 , 512 of the first microstrip radiator 5 1 and the second microstrip radiator 5 2 . 5 21, 5 2 2, located at 45 ° and 2 2 5 °, respectively, to produce a right-hand circularly polarized Korean signal. If they are located at 1 3 5 ° and 31 5 °, respectively, a left-hand circle can be generated. Polarized radiation signal. The first slot line 61 and the second slot line 62 and the first signal feeding structure 71 and the second signal feeding structure 7 2 are respectively located on the lower surface of the substrate 4 1 , that is, the first microstrip radiator 5 1 . It has a different surface than the second microstrip radiator 52. In addition, a first empty bridge structure 8 1 may be disposed approximately at a coupling between the coplanar waveguide structure 2 1 and the first slot line 6 1 and the second slot line 6 2 for conducting the coplanar waveguide structure 2 1 . Two separate ground planes. According to the principle of the present invention, the first empty bridge structure 8.1 can be, for example, a metal wire or a metal foil. Continuation, please refer to FIG. 6 , which is a second embodiment of a circularly polarized microstrip antenna fed by a coplanar waveguide according to the present invention, which is a microstrip antenna fed by a first slot line. The microstrip antenna fed by the two slot lines, the microstrip antenna fed by the third slot line, and the microstrip antenna fed by the fourth slot line are composed. In addition to the main structure of the first embodiment, a third microstrip radiator 53, a third slot line 63 and a fourth microstrip radiator 54, a fourth slot line 64, and a third microstrip radiation are further included. Body 5 3 and fourth microstrip radiator 5 4, for example,

Page 16 1272742 V. Description of the invention (12) can be \ square or round, with two perturbations, 5 3 1 , 5 3 2 and 5 4 1 , 5 4 2, with the third slot line 6 3 And the fourth slot line 64 is an angle reference line, which is located at 4 5 ° and 2 2 5 °, respectively, to generate a right-hand circularly polarized radiation signal, if located at 1 3 5 ° and 3 1 5 °, respectively. , the left hand circularly polarized radiation signal can be generated. A third signal feeding structure 73 is disposed between one end of the third slot line 63 and the third microstrip radiator 53. For example, it may be T-shaped for transmitting the signal from the third slot line 6. 3 is fed into the third microstrip radiator 53 and achieves impedance matching between the third slot line 63 and the third microstrip radiator 53. A fifth signal feeding structure 75 is disposed between the other end of the third slot line 63 and the first microstrip radiator 51. For example, it may be a T-shaped body and the first microstrip radiator. 5 1 is coupled to the fifth signal feed end for coupling the signal from the first microstrip radiator 5 1 to the third slot line 63. A fourth signal feeding structure 74 is disposed between one end of the fourth slot line 64 and the fourth microstrip radiator 54. For example, it may be T-shaped for transmitting the signal from the fourth slot line 6. 4 feeding the fourth microstrip radiator 5 4 and achieving impedance matching between the fourth slot line 64 and the fourth microstrip radiator 54. A sixth signal feeding structure 7 6 is disposed between the other end of the fourth slot line 64 and the second microstrip radiator 52. For example, it may be a T-shaped body and a second radiating body 5 2 is coupled to the fifth signal feed end for coupling the signal from the second microstrip radiator 52 to the fourth slot line 64. The third slot line 6 3 and the fourth slot line 64, for example, may be of equal length and the length is a length that causes a phase delay of 180°. At the same time, the first slot line 6 1 and the second slot line 6 2 can be equal in length to achieve synchronous excitation first.

1272742 V. Description of the invention (13) Effect of the microstrip radiator 5, the second microstrip radiator 5, the third microstrip radiator 5 3 and the fourth microstrip radiator 5 4 . The third microstrip radiator 53 and the fourth microstrip radiator 54 are located on the same plane as the first microstrip radiator 51 and the second microstrip radiator 52. As in the first embodiment, in the second embodiment, the microstrip antenna is located on the same surface of the substrate, and the other components are located on the other surface of the substrate. In addition, a first empty bridge structure 8 1 may be disposed approximately at a coplanar wave. The guiding structure 2 1 is coupled to the first slot line 6 1 and the second slot line 6 2 for conducting the coplanar waveguide structure 2 1 in the ground plane separated from each other. According to the principle of the present invention, the first empty bridge structure 8 1 ' can be, for example, a metal wire or a metal foil. Please refer to FIG. 7 for a third embodiment of a circularly polarized microstrip antenna fed by a coplanar waveguide according to the present invention, which is a microstrip antenna fed by a first slot line. The microstrip antenna fed by the two slot lines, the microstrip antenna fed by the third slot line, and the microstrip antenna fed by the fourth slot line comprise a coplanar waveguide structure 2 1 and a first microstrip radiation The body 5 1 , a first slot line 6 1 , a second microstrip radiator 5 2 , a second slot line 6 2 , a third microstrip radiator 5 3 , a third slot line 6 3 and a first Four microstrip radiators 5 4 and a fourth slot line 64. The first microstrip radiator 5:L, the second microstrip radiator 5 2, the third microstrip radiator 5 3 and the fourth microstrip radiator 5 4 are formed on the same surface of a substrate 4 1 , for example In other words, it may be square or circular, and has two perturbations 511, 512, 521, 5 2 2, 531, 5 3 2 and 541, 5 4 2, respectively, with the first slot line 6 1 and the second The slot line 6 2, the third slot line 63 and the fourth slot line 64 are angle reference lines, which are respectively located at 45° and 2 2 5°, to generate

Page 18 ^U742 I, invention description (14) _ hand circular polarization M ^ -----·-

Then, / I m , σ ^ can be generated, and the right is located in the left-hand circularly polarized radiation signal of U. 35 and 315. The position—but the % mother-slot line and the corresponding micro-striped 夭 Jing°° feed-in structure γ 1 筮, “between the two sides right--feeding Qifu 7Q, the second signal is fed into the sister-in-law The T-shaped opening and the fourth signal feeding structure 7 structure 72 and a third signal antenna ^ are used together to form the signal, respectively, through each slot. And the microstrip corresponding to the corresponding microstrip and the corresponding impedance of the microstrip, and the impedance between the antennas are matched to a r-line 6丨 and a third slot 63, for example, 氺~, %6 4 mesh The side of the bit-delay coplanar waveguide 2 2, said: vertically coupled, 彳 can be vertically coupled to the length of the phase two slot line 62 and the fourth slot line delay coplanar waveguide 22, the waveguide 22 The other side. According to the transmission line theory, the line width and the groove width are: the groove line 62, the third groove line 63 and the fourth groove-, the first-slot line 6i, and the sensible impedance of 100 ohms. Wide to, can be equal length L22, anti-... synchronous excitation of the first fruit. In addition, the emitter 53 and the fourth microstrip radiator (4) coplanar oil have an impedance-graded coplanar waveguide 23, and one end of the impedance gradient L' is caused by, for example, 1 degree coupling of 1 0 0 ohm impedance. Connected to the phase-delay coplanar waveguide 22, the other end is caused by a width of 5, and has been coupled to the coplanar waveguide structure 2丨. The phase delay coplanar ^ 2 2 2 〇 〇 ohmic impedance can be matched to the 50 ohm impedance of the coplanar waveguide structure 2 1 via the impedance gradual coplanar waveguide 2 3 conversion. 1 Page 19 1272742 V. DESCRIPTION OF THE INVENTION (15) As in the first and second embodiments, in the third embodiment, the microstrip antenna is located on the same surface of the substrate, and the other components are located on the other surface of the substrate. In addition, a first empty bridge structure 8 1 can be included between the phase delay coplanar waveguide 2 2 and the first slot line 6 1 and the second slot line 6 2 for conducting the phase delay coplanar waveguide 22 . In the two ground planes separated from each other, a second air bridge structure 8 2 is approximately located at the phase delay coplanar waveguide 22 coupled to the third slot line 6 3 and the fourth slot line 64 for conducting the phase delay Two mutually separated ground planes in the coplanar waveguide 2 2 , a third air bridge structure 8 3 is located opposite the second air bridge structure 8 2 for conducting two mutually separated ground planes in the phase delay coplanar waveguide 2 2 . In accordance with the principles of the present invention, the first empty bridge structure 181, the second hollow bridge structure 8.2, and the third hollow bridge structure 8.3 can be, for example, a metal wire or foil. Applying the principle of sequential rotation to the design of the novel coplanar waveguide feed network disclosed in the present invention can increase the bandwidth of the circularly polarized microstrip antenna fed by the coplanar waveguide disclosed in the present invention. Please refer to FIG. 8 , which is a fourth embodiment of a circularly polarized microstrip antenna fed by a coplanar waveguide according to the present invention, which is a microstrip antenna fed by a first slot line and a second The slot line feeds the microstrip antenna, comprising a coplanar waveguide structure 2, a first microstrip radiator 5 1 , a first slot line 6 1 , a second microstrip radiator 5 2 and a second slot Line 6 2. The first microstrip radiator 5 1 and the second microstrip radiator 5 2 are formed on the same surface of a substrate 4 1 , for example, may be square or circular. A first signal feeding structure 7 1 and a filter are respectively disposed between each slot line and the corresponding microstrip antenna.

Page 20 1272742 V. INSTRUCTION DESCRIPTION (16) The second signal feed structure 7 2 is formed and configured in the same manner as the previous embodiment. The first slot line 6 1 and the second slot line 6 2 may have curved portions 61 1 1 and 6 2 1 to achieve a spatial configuration requirement according to the principle of sequential rotation. In addition, a first phase delay slot line 9 1 is coupled to the first slot line 61, and the coplanar waveguide structure 21 and the other end of the first phase delay slot line 9 1 and the second slot are further coupled. Line 6 2 is coupled. The first microstrip radiator 5 1 and the second microstrip radiator 52 are configured according to the principle of sequential rotation. Further, the first phase delay slot line 9 1 is used, for example, to generate a phase delay of 90°. The phase difference of 180° between the two slot lines in the coplanar waveguide mode (CPW m〇de) is matched with the coplanar waveguide structure 2 1 to achieve the signal phase configuration requirement according to the principle of sequential rotation. In addition, the first microstrip radiator 5 1 and the second microstrip radiator 52 may have two perturbations 5 1 1 , 5 1 2 and 5 2 1 , 5 2 2, respectively, to generate a right-hand circular polarization. Radiation signal. In addition, a first empty bridge structure 8 1 may be disposed approximately at the junction of the coplanar waveguide structure 21 and the first phase delay slot line 9 1 and the second slot line 6 2 for conducting the coplanar waveguide structure 2 In the middle of the two, the two are separated from each other. In accordance with the principles of the present invention, the first empty bridge structure 8.1 can be, for example, a wire or foil. Continuation, please refer to FIG. 9 , which is a fifth embodiment of a circularly polarized microstrip antenna fed by a coplanar waveguide according to the present invention, which is a microstrip antenna fed by a first slot line. The two-slot line feeding microstrip antenna, the third slot line feeding microstrip antenna and the fourth slot line feeding microstrip antenna comprise a coplanar waveguide structure 2 and a first microstrip radiator 5 1. A first slot line 6 1 , a second microstrip radiator 5 2, a second slot line 6 2, a third micro

Page 21 1272742 V. Description of the Invention (17) A radiator 5 3, a third slot line 63 and a fourth microstrip radiator 5 4, and a fourth slot line 64. The first microstrip radiator 5 1 , the second microstrip radiator 5 2 , the third microstrip radiator 5 3 and the fourth microstrip radiator 5 4 are formed on the same surface of a substrate 4 1 , for example. Said to be square or round. A first signal feeding structure 7 1 , a second signal feeding structure 7 2 , a third signal feeding structure 7 3 and a fourth signal are respectively disposed between each slot line and the corresponding microstrip antenna. The feed structure 74 is formed and configured in the same manner as the previous embodiments. The first groove line 6 1 , the second groove line 6 2 , the third groove line 6 3 and the fourth groove line 6 4 may have curved portions 6 1 1 , 6 2 1 , 6 3 1 and 6 4 1 to reach According to the spatial configuration requirements of the principle of sequential rotation. In addition, a first phase delay slot line 9 1 , a second phase delay slot line 9 2 and a phase delay coplanar waveguide 22 are further included. The first phase delay slot line 91 has one end coupled to the first slot line 61, and the second phase delay slot line 92 has one end coupled to the fourth slot line 64. The first phase delay slot line 9 1 and the third slot line 63 are, for example, vertically coupled to one side of the phase delay coplanar waveguide 2 2 , and the second slot line 6 2 and the second phase delay slot line 9 2 can be vertically coupled to the other side of the phase delay coplanar waveguide 2 2 . The phase-delay coplanar waveguide 22 may, for example, have a bent portion, and the length of the phase-delay coplanar waveguide 22, the center strip line width, and the groove width are determined according to the transmission line theory, for example, The length of the phase delay of 360 degrees is caused and caused, for example, by the width of the impedance of 100 ohms, and further, the first groove line 6 1 , the second groove line 6 2 , the third groove line 6 3 and the fourth groove The line 6 4 may be of equal length and a width of 1000 ohm impedance, and the first phase delay slot line 9 1 and the second phase delay slot line 9 2 may be

Page 22 1272742 V. Description of invention (18) Causes 90. The length of the phase delay and the wide yield of the ohmic impedance are matched, and the coplanar waveguide structure 21 is matched in the Cpw mode and the impedance of the phase delayed coplanar waveguide 22 is matched. effect. In addition, an impedance-grading coplanar waveguide 23 may be included, and one end of the impedance-graded coplanar wave i 2 3 is a width of 1 〇〇 ohm impedance and is connected to the phase-delay coplanar waveguide 2 2 , and the other end is caused by The width of the 50 ohm impedance is coupled to the coplanar waveguide structure 21. The phase-delay coplanar waveguide 2 2 〇〇 ohmic impedance can be matched to the 50 ohm impedance of the coplanar waveguide structure 2 i via the impedance gradation coplanar waveguide 23 conversion ◦ In addition, the 'first microstrip radiator 5 1 , The second microstrip radiator 5 2, the third f-belt emitter 5 3 and the fourth microstrip radiator 5 4 may have two perturbations 5 1 1 , 5 1 2, 5 2 1 , 5 2 , respectively 2, 5 3 1, 5 3 2 and 5 4 1 , 5 4 2 to generate a right-hand circularly polarized radiation signal. In addition, a first empty bridge structure 8 1 may be disposed approximately at a phase delay coplanar waveguide 2 2 coupled to the first phase delay slot line 9 1 and the second slot line 6 2 for conducting phase delay coplanar Two mutually separated ground planes in the waveguide 2 2 , and a second air bridge structure 8 2 are located approximately at the phase delay coplanar waveguide 2 2 and the third slot line 63 and the second phase delay slot line 9 2 A ground plane for separating two mutually separated ground planes in the phase-delayed coplanar waveguide 2 2 is located opposite the second bridge structure 8 2 for two phase-delay coplanar waveguides 2 2 Ground planes that are separated from each other. In accordance with the principles of the present invention, the first empty bridge structure 8丨, the second empty bridge structure 8 2 and the second empty bridge structure 83 can be, for example, a metal wire or foil. The antenna fed by the slot line described in the above embodiment is in addition to the structure shown in the figure.

Ϊ 272742 V. Inventive Note (19) In addition, for example, five embodiments of a circularly polarized microstrip antenna fed by a coplanar waveguide as disclosed above for a slotted antenna fed loop antenna, verified The results will be described in detail in the following paragraphs. Please refer to ^1, Fig. jj and "11th", which are respectively the first embodiment of the circularly polarized microstrip antenna of the coplanar waveguide m-in which is disclosed in the present invention. The test result with respect to the frequency and the return loss versus frequency test result with respect to the axis ratio of the second embodiment. The substrate 41 can be selected from the FR4 substrate, the dielectric constant < v ε r) is 4.3, the thickness is 1. The E mm microstrip antenna has a diameter of 20 mm, and the size of the perturbation portion is 0·65 of the microstrip antenna area. As shown in the figure, the 3 dB-axis specific bandwidth of the first embodiment is about 0·9 ° / 〇 most 4, and the axial ratio is 0. 7 3 dB, which is at the same frequency of 4. 02 GHz and the first - the embodiment The minimum return loss is quite close at the frequency of 4. 03 GHz. The return loss in the range of the B-axis specific bandwidth for the 3 d of the first embodiment is less than -15 dB. The second embodiment shown in the figure has a 3 dB-axis specific bandwidth of about 0.9%, and a minimum axial ratio of 0.77 dB, which is located at a frequency of 4.01 GHz and a minimum of the second embodiment. The wave loss system is located at a frequency of 4. 02 GHz, which is quite close. The return loss in the range of the 3 dB-axis specific bandwidth of the second embodiment is less than -15 dB. Therefore, the antenna disclosed in the present invention can be known from the results of FIG. 10 and FIG. Having the characteristics of simultaneously generating circularly polarized radiation in the same frequency range and achieving good impedance matching, please refer to "1:2Fig.j] and "Fig.13", which are respectively the coplanar waveguide feeds disclosed in the present invention. The right-hand circularly polarized radiation pattern of the first embodiment and the second embodiment of the circularly polarized microstrip antenna; measured at a minimum axial ratio of 4.02 GHz and 4 • 0 1 1 GHz, respectively - Embodiment and Second Embodiment

Page 24 1272742_ V. INSTRUCTIONS (20) The antenna gain (an_tenna Sain) measured at the minimum axial ratio frequency is 6.93 dB and 9.57 dB ° respectively. Please refer to "Figure 14" and " Figure 15 is a test result of the frequency ratio of the first embodiment and the fourth embodiment of the circularly polarized microstrip antenna fed by the coplanar waveguide disclosed in the present invention. Wave loss test results for frequency. The substrate 4 1 can be selected from the TTM substrate of R 〇gers, the dielectric constant (ε r) is 4.5, the thickness is 1.905 mm, the microstrip antenna diameter is 19 mm, and the size of the perturbation portion is 0. 8 % of the microstrip antenna area. . As shown in the figure, the three-axis specific bandwidth of the first embodiment without the empty bridge structure is about * 4. 0 5 5 GHz to 4_ 0 9 GHz, which is about 0.9%, and the center frequency is • GHz, and the first The embodiment has no empty bridge structure - the bandwidth of the 1 〇 dB return loss is about 4. 2 GHz to 4.15 GHz, which is about 32%, and the center frequencies of the 丨·Γ GHz' are quite close. The 3rd (10) axis ratio of the 4.L "τΪ...sky bridge structure shown in the figure is about 4. 0 0 5 GHz to about A · 1 A, and the center frequency is 4 〇 6 7 ΓΗ7, π η 筮 筮 筮 施 无 无 无 , , , , U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 6.1%, the center frequency is 4·0.75 GHz, and the two can be found in the following. The new coplanar waveguide feed network of the sigh juice disclosed by the invention disclosed in the present invention can be found. Increasing the bandwidth of the local wave loss. The axial ratio of the circularly-polarized microstrip antenna fed by the waveguide and the back-to-back 3 _ specific bandwidth are larger == 7^ ~ Embodiments have an empty bridge structure. The example has an empty bridge structure. 0 5 5 GHz to 4· 〇9 GHz, while the first to 4. 4 4 t - 10 0 return loss frequency 士 Shi milk " λ / λ i Example Yikong Bridge suspected " ..., The results of the structure of the second Yang and the ° are quite similar. In the figure * GHz, with the _ every a, one by one, see from about 4. 〇i GHz

Page 25 1272742

'_ Invention description (21) shown in the first GHz to 4] 4 ^ Example of the 3 dB axis ratio of the empty bridge structure bandwidth from about 4. 01 wave loss, such as Z on the same day, the fourth instance is free Bridge structure _ 1 〇 dB back empty bridge structure: junction GHz to 4.19 GHz 'and the fourth embodiment without revealing the 17th picture", respectively, is the fifth real # ^ 士波 v feeding circularly polarized microstrip The third embodiment of the antenna 盥 wave loss without the bridge structure of the axial ratio of the test results and frequency for the frequency: base = quality ... ") is 45, the thickness is, the micro-band diagram 仫 is 19 〃 mm 'memory The size is 〇·g % of the area of the microstrip antenna. : The second embodiment has no 3 dB axis ratio of the empty bridge structure. The bandwidth is about 654.065 GHz to 4·! GHz, which is about 〇9 %, and the center frequency is 4 〇8 scps GHz, while the third embodiment has no The return loss of the empty bridge structure is about 4 to 03 GHz to 4.16 GHz, which is about 3.2%. The center frequency is "0 9 5 GHz, and the two center frequencies are quite close. The fifth example of the no-floating structure shown in the figure has a 3 dB axis ratio from about 4 〇 1 ^ to 4. 13 GHz, which is about 3.2 %, and the center frequency is 4. 〇 65 GHz, while the fifth Example | The empty bridge structure -1 0 dB return loss bandwidth is approximately from 3, 91 ^. To 4 2/, , GHz, about 8_3 %, the center frequency is 4.08 GHz, and the two center frequencies are close. It can be seen from the figure that the novel coplanar waveguide feed network designed according to the present invention can be used to increase the axis of the circularly polarized microstrip antenna fed by the coplanar waveguide of the present invention. Compared with the return loss frequency and width. Further, as shown in the figure, the third embodiment has an empty bridge structure 3 with a frequency of about 1. 0 6 5 G Η z to 4. 0 9 5 G Η z, while the third embodiment has

Page 26 1272742 V. INSTRUCTIONS (22) The -10 dB return loss bandwidth of the empty bridge structure is approximately from 4. 02 GHz to 4.15 G Η z, which is comparable to the results of the no-floating structure of the third embodiment. The fifth embodiment shown in the figure has a 3 dB axis ratio of the space bridge structure from about 3.98 GHz to 4.16 GHz, which is about 4.4%, and the center frequency is 4.07 GHz. The five embodiment has a null bridge structure -1 0 dB return loss bandwidth from about 3.94 GHz to 4.24 GHz, about 7.3%, the center frequency is 4.09 GHz, the two center frequencies are quite close. Comparing the results of the fifth embodiment with or without the empty bridge structure, it has been found that the use of the empty bridge structure can further increase the axial specific bandwidth of the circularly polarized microstrip antenna fed by the coplanar waveguide disclosed in the present invention. According to the circularly polarized ring-slot antenna fed by the coplanar waveguide disclosed in the present invention, the empty bridge structure is applied to the signal feeding end of the ring-slot antenna for conducting two mutually separated ground planes in the coplanar waveguide structure, and further Overcoming the coplanar waveguide directly feeding into the ring-slot antenna can not have the technical problem of simultaneously generating circularly polarized radiation and achieving good impedance in the same frequency band. The present invention perturbs the ring-slot antenna to produce circularly polarized radiation, and uses the transmission line equation to design an impedance matching circuit to achieve good input impedance matching. Due to its small size, conformability, low cost, light weight, and ease of fabrication, the coplanar waveguide fed circularly polarized ring-slot antenna of the present invention can be used in a variety of communication systems. According to the circularly polarized microstrip antenna of the coplanar waveguide feeding according to the present invention, the antenna element is placed in a direction perpendicular to the fed coplanar waveguide structure, and the single element microstrip antenna is fed by a single slot line. A pair of slot lines merge to form a fed coplanar waveguide structure. The present invention perturbs the microstrip antenna to produce circularly polarized radiation. T-shaped slot line to microstrip proposed by the present invention

Page 27 1272742 V. INSTRUCTIONS (23) The antenna feed-in structure can achieve excitation of a circularly polarized microstrip antenna and achieve good impedance matching. In addition, the feed structure can be used to couple energy to other array elements for designing a one-dimensional array of microstrip antennas containing more components. The T-shaped feed structure can also be applied to the design of a two-dimensional antenna array. In addition, by applying the principle of sequential rotation to the design of the novel coplanar waveguide feed network disclosed in the present invention, the bandwidth of the circularly polarized microstrip antenna fed by the coplanar waveguide of the present invention can be increased. The circularly polarized microstrip antenna fed by the coplanar waveguide of the present invention can be used in various communication systems due to its small size, conformability, low cost, light weight, and ease of fabrication. While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the present invention, and it is intended that the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.

• Page 28 1272742 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of a circularly polarized ring-slot antenna fed by a coplanar waveguide according to the present invention; FIG. 2 is an axial ratio of the structure of FIG. Test results; Fig. 3 is the test result of the return loss of the structure of Fig. 1; Fig. 4 is the radiation field pattern of the structure of Fig. 1; Fig. 5 is the coplanar waveguide disclosed in the present invention. A schematic structural view of a first embodiment of a circularly polarized microstrip antenna fed in; FIG. 6 is a schematic structural view of a second embodiment of a circularly polarized microstrip antenna fed by a coplanar waveguide according to the present invention; 7 is a schematic structural view of a third embodiment of a circularly polarized microstrip antenna fed by a coplanar waveguide according to the present invention; FIG. 8 is a circular polarization micro of a coplanar waveguide feeding according to the present invention. A schematic structural view of a fourth embodiment with an antenna; FIG. 9 is a schematic structural view of a fifth embodiment of a circularly polarized microstrip antenna fed by a coplanar waveguide according to the present invention; Measurement of the frequency ratio of the first and second embodiments of the microstrip antenna Test results; FIG. 1 is a test result of return loss for frequency of the first and second embodiments of the microstrip antenna of the present invention; FIG. 2 is a right hand of the first embodiment of the microstrip antenna of the present invention Circularly polarized radiation pattern, Fig. 13 is a right-hand circularly polarized radiation pattern of the second embodiment of the microstrip antenna of the present invention, and Fig. 14 is the first and the third of the microstrip antenna of the present invention. Four embodiments with or without empty bridge

Page 29 1272742 The diagram briefly illustrates the test results of the axial ratio of the structure for the frequency; Figure 15 is the test result of the return loss of the first and fourth embodiments of the microstrip antenna of the present invention with or without the empty bridge structure. Figure 16 is a test result of the axial ratio of the third and fifth embodiments of the microstrip antenna of the present invention with or without an empty bridge structure; and the seventh embodiment is the third and the third embodiment of the microstrip antenna of the present invention; The fifth embodiment has the result of the return loss of the empty bridge structure for the frequency. [Description of schematic symbols] 1 0 circularly polarized ring-slot antenna · 1 1 annular groove structure 1 2, 1 3 perturbation part 2 0 coplanar waveguide structure 2 0 A high-impedance part 21 coplanar waveguide structure 2 2 phase delay Coplanar waveguide 2 3 impedance gradient coplanar waveguide 30 0 bridge structure 40, 41 substrate 51 first microstrip radiator 5 2 second microstrip radiator 5 3 third microstrip radiator 5 4 fourth microstrip radiator 5 1 1 , 5 1 2 , 5 2 1 , 5 2 2 , 5 3 1 , 5 3 2 , 5 4 1 , 5 4 2 perturbation part 6 1 first slot line

Page 30 1272742 Brief description of the drawing 6 2 second slot line 6 3 third slot line 6 4 fourth slot line 611, 621, 631, 641 bend 7 1 first signal feed structure 7 2 second signal feed Structure 7 3 third signal feeding structure 7 4 fourth signal feeding structure 7 5 fifth signal feeding structure 7 6 sixth signal feeding structure 7 1 1 , 7 1 2 shorting groove line end 81 first empty bridge Structure 8 2 second empty bridge structure 8 3 third empty bridge structure 9 1 first phase delay slot line 9 2 second phase delay slot line

Page 31

Claims (1)

1272742 VI. Patent Application Range 1. A circularly polarized ring-slot antenna with a coplanar waveguide feeding, comprising: an annular groove structure having a signal feeding end and at least one perturbation part, used for the perturbation part Generating a circularly polarized radiation signal; a coplanar waveguide structure coupled to the signal feed end; and at least one empty bridge structure for connecting different ground planes of the coplanar waveguide structure. 2. The antenna of claim 1, wherein the empty bridge structure is disposed approximately at the signal feed end. 3. The antenna of claim 1, wherein the empty bridge structure is a metal wire. 4. The antenna of claim 1, wherein the empty bridge structure is a metal foil. The antenna of claim 1, wherein the coplanar waveguide structure further comprises a high impedance portion for impedance matching. 6. The antenna of claim 5, wherein the high impedance portion lies between the meandering groove structure and the coplanar waveguide structure. 7. The antenna of claim 6, wherein the empty bridge structure is disposed approximately at the signal feed end. 8. The antenna of claim 1, wherein the perturbation portion comprises two, respectively disposed at an angle of 45° and 225° of an angle reference line of the annular groove structure. 9. The antenna of claim 1, wherein the perturbation portion comprises two angular reference lines respectively disposed on the annular groove structure. Page 32 1272742 VI. Patent application scope 13 5° and 315° position. 1 0. The antenna of claim 1, wherein the coplanar waveguide structure has an impedance value of approximately 50 ohms. A microstrip antenna with a slot line feed, comprising: a microstrip radiator having a first signal feed end; a first slot line coupled to the microstrip radiator to the first signal feed And a first signal feeding structure disposed at the first signal feeding end and coupled to the first slot line as an impedance matching between the microstrip radiator and the first slot line. The antenna of claim 11, wherein the first signal feed structure comprises at least one shorting slot end. The antenna of claim 12, wherein the first signal feed structure comprises two shorting slot ends. The antenna of claim 13 wherein the first signal feed structure is a T-shape. The antenna of claim 11, wherein the first slot line has an impedance value of approximately 100 ohms. The antenna of claim 11, wherein the microstrip radiation system is a square microstrip radiator. The antenna of claim 11, wherein the microstrip radiation system is a circular microstrip radiator. The antenna of claim 17, wherein the microstrip radiator has at least one perturbation portion to cause circular polarization of the microstrip radiator Page 33 1272742 VI. Application for patent coverage Radiation signal. The antenna of claim 18, wherein the microstrip radiator has two perturbations, respectively disposed at 45° and 2 2 from the first slot line of the microstrip radiator 5° position. The antenna of claim 18, wherein the microstrip radiator has two perturbation portions respectively disposed on the microstrip radiator from the first slot line 1 3 5 And 3 1 5 ° position. 2. The antenna of claim 1 , further comprising a second slot line and a second signal feed structure, wherein the microstrip radiator further has a second signal feed end, wherein The second slot line is coupled to the second signal feed end, and the second signal feed structure is disposed at the second signal feed end and coupled to the second slot line Pick up. The antenna of claim 21, wherein the first slot line is approximately collinear with the second slot line. The antenna of claim 2, wherein the second slot is coupled to a load (1 oad) with respect to the other end of the second signal feed end. The antenna of claim 23, wherein the load is a microstrip antenna fed by another slot line. The invention relates to a microstrip antenna array fed by a coplanar waveguide, comprising: a microstrip antenna fed by a first slot line, comprising: a first microstrip radiator having a first signal feeding end ; Page 34 Ϊ 272742 6. Applying for a patent range, a first slot line, coupled to the first microstrip radiator to the first signal feed end; and a first signal feed structure disposed on the first signal feed The input end is coupled to the first slot line to match the impedance between the first microstrip radiator and the first slot line; and the second slot line feeds the microstrip antenna, including: a second microstrip radiator having a second signal feed end; a second slot line coupled to the second signal radiating body to the second signal feed end; and a second signal feed structure configured The second signal feed end is coupled to the second slot line as an impedance matching between the second microstrip radiator and the second slot line; and a coplanar waveguide structure coupled to the first a slot line and the second slot line. The antenna array of claim 25, wherein the first signal feeding structure and the second signal feeding structure are in a T shape. The antenna array of claim 25, wherein the coplanar waveguide structure has an impedance value of approximately 50 ohms. The antenna array of claim 25, wherein the first microstrip radiator and the second microstrip radiation system are square microstrip radiators. The antenna array of claim 25, wherein the first microstrip radiator and the second microstrip radiation system are circular microstrip radiation Page 35 1272742 VI. Application for patent scope. The antenna array of claim 29, wherein the first microstrip radiator and the second microstrip radiator have at least one perturbation portion, the first microstrip radiator and the The second microstrip radiator produces a circularly polarized radiation signal. The antenna array of claim 30, wherein the first microstrip radiator and the second microstrip radiator respectively have two perturbations, and the first microstrip radiator The two micro-interference portions are respectively disposed at positions of the first microstrip radiator from the first slot line by 4° and 2 2 5°, and the two perturbation portions of the second microstrip radiator are respectively disposed on The second microstrip radiator is at a position of 5° and 2 2 5° from the second slot line. The antenna array of claim 30, wherein the first microstrip radiator and the second microstrip radiator respectively have two perturbations, the first microstrip radiator The two micro-interference portions are respectively disposed at positions of the first microstrip radiator 1 3 5 ° and 3 1 5 ° from the first slot line, and the two micro-interference portions of the second micro-band radiator respectively The second microstrip radiator is disposed at a position of 1 3 5° and 3 15 5 degrees from the second slot line. The antenna array of claim 25, further comprising a microstrip antenna fed by a third slot line, comprising: a third microstrip radiator having a third a signal feeding end; a third slot line coupled to the third microstrip radiator to the third signal feeding end; Page 36 Ϊ 272742 VI. Patent Application Scope A third signal feed structure is disposed at the third signal feed end and coupled to the third slot line as the third microstrip radiator and the third slot An impedance matching between the lines; and a fifth signal feeding structure disposed at a fifth signal feeding end of the first microstrip radiator and coupled to the third slot line. The antenna array of claim 3, further comprising: a fourth slot line feeding microstrip antenna, comprising: a fourth microstrip radiator having a fourth signal a fourth slot line coupled to the fourth signal feeding end; and a fourth signal feeding structure disposed on the fourth signal feeding end, and The fourth slot line is coupled to serve as an impedance matching between the fourth microstrip radiator and the fourth slot line; and a sixth signal feeding structure is disposed in the sixth of the second microstrip radiator The signal feed end is coupled to the fourth slot line. The antenna array of claim 25, wherein the coplanar waveguide structure further comprises a first air bridge structure for connecting different ground planes of the coplanar waveguide structure. The antenna array of claim 35, wherein the first air bridge structure is disposed approximately at a position where the coplanar waveguide structure engages with the first slot line and the second slot line. 3 7. The antenna array according to claim 25, which further includes Page 37 1272742 6. The scope of the patent application is as follows: a microstrip antenna fed by a third slot line is coupled to the coplanar waveguide structure and is located on the same side as the microstrip antenna fed by the first slot line. The method includes: a third microstrip radiator having a third signal feed end; a third slot line coupled to the third microstrip radiator to the third signal feed end; and a third signal a feeding structure is disposed at the third signal feeding end and coupled to the third slot line as an impedance matching between the third microstrip radiator and the third slot line; and a fourth slot line The microstrip antenna is coupled to the coplanar waveguide structure and is located on the same side of the microstrip antenna fed by the second slot line, and includes: a fourth microstrip radiator having a fourth signal a fourth slot line coupled to the fourth signal feeding end; and a fourth signal feeding structure disposed at the fourth signal feeding end, and Coupling with the fourth slot line as a resistance between the fourth microstrip radiator and the fourth slot line Anti-match. The antenna array of claim 37, wherein the coplanar waveguide structure comprises a phase delay coplanar waveguide, as the third slot line and the first slot line and the fourth slot are generated Between the line and the second slot line Page 38 1272742 VI. Patent application range 3 6 0° phase delay. The antenna array of claim 3, wherein the phase delay coplanar waveguide has an impedance value of approximately 100 ohms. The antenna array of claim 39, wherein the coplanar waveguide structure comprises an impedance-graded coplanar waveguide coupled to the phase-delay coplanar waveguide as the phase-delay coplanar waveguide Impedance matching between coplanar waveguide structures. The antenna array of claim 37, further comprising: a second air bridge structure for connecting different two ground planes of the coplanar waveguide structure; and a second air bridge The structure 'is used to connect different two ground planes of the coplanar waveguide structure. The antenna array of claim 4, wherein the second air bridge structure is disposed approximately at a coupling between the coplanar waveguide structure and the third slot line and the fourth slot line, wherein The third air bridge structure is disposed approximately on the opposite side of the second air bridge structure. 4 3. A circularly polarized antenna array fed by a coplanar waveguide, comprising: a first slot line feeding antenna having a first signal feeding end; and a second slot line feeding antenna having a second signal feed end; a first slot line coupled to the antenna of the first slot line and coupled to the first signal feed end; Page 39 1272742 6. Applying for a patent range, a second slot line, coupled to the antenna of the second slot line is coupled to the second signal feed end; a first phase delay slot line coupled to the first a slot line; and a coplanar waveguide structure coupled to the first phase delay slot line and the second slot line. The antenna array of claim 4, wherein the first slot line further includes a bent portion for feeding the antenna of the first slot line and the second slot line. The antennas are arranged in a rotating manner. The antenna array of claim 4, wherein the second slot line further includes a bent portion for feeding the antenna of the first slot line and the second slot line. The antennas are arranged in a rotating manner. The antenna array of claim 4, wherein the antenna fed by the first slot line and the antenna fed by the second slot line are microstrip antennas fed by the slot line. The antenna array of claim 4, wherein the antenna fed by the first slot line and the antenna fed by the second slot line are ring groove antennas fed by the slot line. The antenna array of claim 4, wherein the first phase delay slot line is used to generate a phase delay of approximately 90°. The antenna array of claim 4, wherein the coplanar waveguide structure further comprises a first air bridge structure for connecting different ground planes of the coplanar waveguide structure. The antenna array of claim 49, wherein the first air bridge structure is disposed approximately at the coplanar waveguide structure and the first phase Page 40 1272742 VI. Patent Application Range The delay slot line and the second slot line coupling. 5 1 . A circularly polarized antenna array fed by a coplanar waveguide, comprising: 'a first slot line fed antenna having a first signal feed end; and a second slot line fed antenna, Having a second signal feed end; a third slot line feed antenna having a third signal feed end; a fourth slot line feed antenna having a fourth signal feed end; The slot line is coupled to the antenna of the first slot line and coupled to the first signal feed end. The second slot line is coupled to the antenna of the second slot line and coupled to the second signal feed end. a third slot line coupled to the antenna of the third slot line and coupled to the third signal feed end; a fourth slot line connected to the antenna of the fourth slot and the line feed a four-phase feed end; a first phase delay slot line 'handle connected to the first slot line; a second phase delay slot line coupled to the fourth slot line; and a coplanar waveguide structure, one side handle The first phase delay slot line and the third slot line are coupled to the second slot line and the second phase delay slot line. 5 2. The antenna array according to claim 51, wherein the first Page 41 1272742 6. Patent application scope. Each of the slot line, the second slot line, the third slot line and the fourth slot line further includes a bent portion for feeding the antenna of the first slot line, The second slot line fed antenna, the third slot line fed antenna, and the fourth slot line fed antenna are sequentially arranged in rotation. The antenna array of claim 51, wherein the first slot line feeding antenna, the second slot line feeding antenna, the third slot line feeding antenna, and the Each of the antennas fed by the four-slot line is a microstrip antenna fed by the slot line. The antenna array of claim 5, wherein the first slot line feeding antenna, the second slot line feeding antenna, the third slot line feeding antenna, and the Each of the antennas fed by the four-slot line is a ring-slot antenna into which the slot line is fed. The antenna array of claim 5, wherein the coplanar waveguide structure comprises a phase delay coplanar waveguide, as the third slot line and the first phase delay slot line are generated A phase delay of approximately 360° between the two phase delay slot lines and the second slot line. The antenna array of claim 5, wherein the phase delay coplanar waveguide has an impedance value of approximately 100 ohms. The antenna array of claim 5, wherein the coplanar waveguide structure comprises an impedance-graded coplanar waveguide coupled to the phase-delay coplanar waveguide as the phase-delay coplanar waveguide Impedance matching between coplanar waveguide structures. The antenna array of claim 51, wherein the first phase delay slot line is used to generate a phase delay of approximately 90°. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The antenna array of claim 51, further comprising at least one empty bridge structure for connecting different two ground planes of the coplanar waveguide structure. The antenna array of claim 60, wherein the empty bridge structure comprises: a first empty bridge structure, a second empty bridge structure and a third empty bridge structure, all of which are used to connect the antenna array Different ground planes of the coplanar waveguide structure. The antenna array of claim 61, wherein the first air bridge structure is disposed approximately at a coupling between the coplanar waveguide structure and the first phase delay slot line and the second slot line The second air bridge structure is disposed approximately at the coplanar waveguide structure and the third slot line and the second phase delay slot line, wherein the third air bridge structure is approximately disposed in the second space The opposite side of the bridge structure. Page 43