Co-polarization mobile phone frame antenna based on millimeter wave dipole and sub-6ghz loop antenna

Abstract

The application provides a co-aperture mobile phone frame antenna based on a millimeter wave dipole and a sub-6GHz loop antenna, which comprises a dipole antenna, a loop antenna, a first feeding point, a second feeding point, a microstrip line and a chip inductor; the dipole antenna is arranged on the inner side of the mobile phone frame and is located in the YOZ plane and has an included angle theta with the Y axis; the loop antenna is arranged on the outer side of the mobile phone frame and is located in the YOZ plane; the first feeding point is arranged in the external dielectric plate located in the XOY plane; the first feeding point is connected with one end of the dipole antenna through the microstrip line and feeds the dipole antenna; the second feeding point is arranged in parallel with the chip inductor on the top of the loop antenna and feeds the loop antenna; the dipole antenna fed by the first feeding point radiates electromagnetic waves to the outside of the mobile phone frame through the loop antenna. The application has a simple structure, the co-aperture designed dipole antenna is arranged on the mobile phone frame, more mobile phone space can be saved, and the application is relatively easy to realize.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and more specifically, to a common-aperture mobile phone frame antenna based on a millimeter-wave vibrator and a sub-6GHz loop antenna. Background Technology

[0002] In recent years, the rapid development of fifth-generation mobile communication (5G) has led to the development of 5G communication, which includes both sub-6GHz and millimeter-wave frequency bands. The sub-6GHz band has a longer wavelength, making it suitable for long-distance communication; however, spectrum resources in the sub-6GHz band are scarce, and its transmission rate struggles to meet increasingly demanding requirements. The millimeter-wave band, on the other hand, has abundant spectrum resources and a high transmission rate, making it more suitable for high-speed, low-latency, and short-range communication. For 5G phones, supporting both sub-6GHz and millimeter-wave bands is the future trend. At the same time, the internal space of 5G phones is becoming increasingly limited, posing further challenges to antenna design. Therefore, designing a common-aperture antenna on the phone's frame has become both a research topic and a practical necessity. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a common-aperture mobile phone frame antenna based on a millimeter-wave vibrator and a sub-6GHz loop antenna.

[0004] The common-aperture mobile phone frame antenna based on millimeter-wave dipole and sub-6GHz loop antenna provided by the present invention includes dipole antenna, loop antenna, first feed point, second feed point, microstrip line and chip inductor;

[0005] Establish a coordinate system, with the midpoint of the bottom of the phone frame as the origin O, the Y-axis parallel to the length extension direction of the phone frame, and the Z-axis parallel to the width extension direction of the phone frame. The vibrator antenna is located inside the phone frame and in the YOZ plane, with an angle θ between it and the Y-axis.

[0006] The loop antenna is located on the outside of the phone frame and in the YOZ plane. The first feed point is located in the external dielectric substrate in the XOY plane. The first feed point is connected to one end of the vibrating antenna through a microstrip line and feeds the vibrating antenna. The second feed point is located on the top of the loop antenna in parallel with the chip inductor. The second feed point feeds the loop antenna.

[0007] The vibrating antenna, fed by the first or second feed point, radiates electromagnetic waves outwards from the phone's frame via a loop antenna.

[0008] Preferably, the included angle θ is in the range of 45° < θ < 90°.

[0009] Preferably, there are multiple dipole antennas, which are arranged in parallel along the Y-axis direction.

[0010] Preferably, the first feed point and the microstrip line are each set to correspond one-to-one with the dipole antenna.

[0011] Preferably, the spacing between adjacent vibrating antennas is 4.22 mm.

[0012] Preferably, the length of the vibrating antenna is 3.3 mm.

[0013] Preferably, the width of the vibrating antenna is 0.34 mm.

[0014] Preferably, the length of the loop antenna extends parallel to the Y-axis and its length is 50 mm.

[0015] Preferably, the width of the loop antenna extends parallel to the Z-axis and has a width of 5 mm.

[0016] Preferably, the inductance value of the chip inductor is 22nH.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention has a simple structure and adopts the technique of placing the vibrating antenna with the same aperture design on the edge of the mobile phone, which can save more mobile phone space and is relatively easy to implement.

[0019] 2. This invention achieves excellent performance such as high gain and adjustable frequency band by simply adjusting the length of the dipole antenna and the loop antenna. Attached Figure Description

[0020] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a side view of the structure of the present invention in the xoz plane;

[0023] Figure 3 This is a side view of the structure of the present invention in the yoz plane;

[0024] Figure 4 This is a schematic diagram of the S11 parameters of the present invention in the sub-6GHz band;

[0025] Figure 5 This is a schematic diagram of parameters S12, S13, S14, and S15 of the present invention in the sub-6GHz frequency band;

[0026] Figure 6This is a schematic diagram of parameters S22, S33, S44, and S55 in the millimeter-wave band of the present invention.

[0027] Figure 7 This is a schematic diagram of parameters S21, S23, S24, and S25 in the millimeter-wave band of the present invention.

[0028] Figure 8 This is the radiation pattern of the xoz plane at 28 GHz according to the present invention;

[0029] Figure 9 This is the radiation pattern of the plane with theta = 45 degrees at 28 GHz according to the present invention;

[0030] Figure 10 This is the radiation pattern of the xoy plane at 28 GHz according to the present invention;

[0031] Figure 11 This is the radiation pattern of the xoz plane at 3.5 GHz according to the present invention;

[0032] Figure 12 This is the radiation pattern of the xoy plane at 3.5 GHz according to the present invention.

[0033] The diagram shows:

[0034] Dipole antenna 1 Second feed point 3b

[0035] 2 loop antennas, 4 microstrip lines

[0036] First feed point 3a, chip inductor 5 Detailed Implementation

[0037] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0038] This invention discloses a common-aperture mobile phone frame antenna based on a millimeter-wave vibrator and a sub-6GHz loop antenna. The common-aperture antenna design is placed on the mobile phone frame, saving more space in the phone. Furthermore, the antenna can achieve excellent performance such as high gain and adjustable frequency band by simply adjusting the length of the vibrator antenna and the loop antenna.

[0039] The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna provided by the present invention, such as... Figure 1 As shown, it includes a dipole antenna 1, a loop antenna 2, a first feed point 3a, a second feed point 3b, a microstrip line 4, and a chip inductor 5; as Figure 2-3As shown, a spatial rectangular coordinate system o-xyz is established. The midpoint of the bottom of the mobile phone frame is set as the origin O. The Y-axis is parallel to the length extension direction of the mobile phone frame, and the Z-axis is parallel to the width extension direction of the mobile phone frame. The vibrator antenna 1 is set on the inner side of the mobile phone frame and is located in the YOZ plane, with an angle θ between it and the Y-axis.

[0040] The loop antenna 2 is disposed on the outer side of the phone frame and located in the YOZ plane. The first feed point 3a is disposed in an external dielectric substrate located in the XOY plane. The first feed point 3a is connected to one end of the vibrator antenna 1 through a microstrip line 4 and feeds the vibrator antenna 1. The second feed point 3b is disposed on top of the loop antenna 2 in parallel with the chip inductor 5, and the second feed point 3b feeds the loop antenna 2. The vibrator antenna 1, fed by the first feed point 3a or the second feed point 3b, radiates electromagnetic waves to the outside of the phone frame through the loop antenna 2. This invention achieves a shared aperture design for a millimeter-wave vibrator antenna and a sub-6GHz loop antenna on the phone frame, which has practical value given the current scarcity of internal space in 5G phones.

[0041] Specifically, the included angle θ ranges from 45° to 90°. Multiple dipole antennas 1 are arranged parallel to each other along the Y-axis. The first feed point 3a and the microstrip line 4 are each corresponding to a dipole antenna 1. The spacing between adjacent dipole antennas 1 is 4.22 mm. The length of each dipole antenna 1 is 3.3 mm. The width of each dipole antenna 1 is 0.34 mm. The length of the loop antenna 2 extends parallel to the Y-axis, and its length is 50 mm. The width of the loop antenna 2 extends parallel to the Z-axis, and its width is 5 mm. The inductance value of the chip inductor 5 is 22 nH.

[0042] The working principle of this invention is as follows:

[0043] The dipole antenna 1 is fed through the first feed point 3a, and the dipole antenna 1 radiates millimeter-wave electromagnetic waves to the outside of the mobile phone frame through the loop antenna 2. The loop antenna 2 is fed through the second feed point 3b, and radiates sub-6GHz electromagnetic waves.

[0044] Tests showed that its gain and isolation performance were quite good, such as... Figure 4 The figure shows the S11 parameters of the loop antenna in the sub-6GHz band. Figure 5 This is a schematic diagram of the S12, S13, S14, and S15 parameters of the loop antenna in the sub-6GHz band. Figure 6 This is a schematic diagram of the S22, S33, S44, and S55 parameters of a dipole antenna in the millimeter-wave band. Figure 7 This is a schematic diagram of the S21, S23, S24, and S25 parameters of the dipole antenna in the millimeter-wave band. Figure 8The antenna radiation pattern in the xoz plane at 28 GHz is shown. Figure 9 The antenna radiation pattern is shown at theta = 45 degrees at 28 GHz. Figure 10 This is the radiation pattern of the antenna in the xoy plane at 28 GHz.

[0045] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0046] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna, characterized in that, It includes a vibratory antenna (1), a loop antenna (2), a first feed point (3a), a second feed point (3b), a microstrip line (4), and a chip inductor (5); Establish a coordinate system, set the midpoint of the bottom of the mobile phone frame as the origin O, the Y axis is parallel to the length extension direction of the mobile phone frame, the Z axis is parallel to the width extension direction of the mobile phone frame, the vibrator antenna (1) is set on the inner side of the mobile phone frame and located in the YOZ plane, with an angle θ between it and the Y axis; The loop antenna (2) is set on the outside of the mobile phone frame and is located in the YOZ plane. The first feed point (3a) is set in the external dielectric board located in the XOY plane. The first feed point (3a) is connected to one end of the vibrating antenna (1) through the microstrip line (4) and feeds the vibrating antenna (1). The second feed point (3b) is set on the top of the loop antenna (2) in parallel with the chip inductor (5). The second feed point (3b) feeds the loop antenna (2). The dipole antenna (1) fed through the first feed point (3a) radiates millimeter-wave electromagnetic waves to the outside of the mobile phone frame through the loop antenna (2), and the loop antenna (2) fed through the second feed point (3b) radiates sub-6GHz electromagnetic waves to the outside of the mobile phone frame.

2. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 1, characterized in that, The included angle θ is in the range of 45° < θ < 90°.

3. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 1, characterized in that, The vibrating antenna (1) is multiple, and the multiple vibrating antennas (1) are arranged in parallel along the Y-axis direction.

4. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 3, characterized in that, The first feed point (3a) and the microstrip line (4) are both set to correspond one-to-one with the dipole antenna (1).

5. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 3, characterized in that, The spacing between adjacent dipole antennas (1) is 4.22 mm.

6. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 1, characterized in that, The length of the dipole antenna (1) is 3.3 mm.

7. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 1, characterized in that, The width of the dipole antenna (1) is 0.34 mm.

8. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 1, characterized in that, The length of the loop antenna (2) is parallel to the Y-axis and its length is 50 mm.

9. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 1, characterized in that, The width of the loop antenna (2) extends parallel to the Z-axis and has a width of 5 mm.

10. The common-aperture mobile phone frame antenna based on a millimeter-wave dipole and a sub-6GHz loop antenna according to claim 1, characterized in that, The inductance value of the chip inductor (5) is 22nH.

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