Omnidirectional tri-band cellular antenna

Abstract

The application discloses an omnidirectional three-waveband cellular antenna which comprises a connector, a base, an antenna body, a fixing sleeve, a first oscillator, a second oscillator, a support, a protective sleeve and a protective sleeve cover; the antenna body is a rod-shaped body with a silver-plated surface, so that the rod-shaped body can conduct signals as a whole, and the rod-shaped body comprises a needle part, a fixing part, a first oscillator mounting part, a support mounting part and a second oscillator mounting part arranged in sequence along an axis; the first oscillator is fixed to the first oscillator mounting part of the antenna body, the support is fixed to the support mounting part of the antenna body, and the second oscillator is fixed to the second oscillator mounting part of the antenna body and the second sleeve-shaped mounting part of the support; the needle part passes through the base as a receiving output end or a receiving input end, and the fixing part is mounted in the base. The omnidirectional three-waveband cellular antenna only uses the first oscillator and the second oscillator to realize accurate matching of three frequency bands under cellular communication.

Description

Technical Field

[0001] This invention relates to antennas, and more particularly to cellular antennas. Background Technology

[0002] In modern mobile communication systems, especially in the cellular communication field, such as 4G LTE, 5G NR, and future 6G, omnidirectional antennas are widely used as key components of base stations, mobile terminals, or portable devices in urban coverage, rural expansion, emergency communications, and IoT scenarios. Omnidirectional antennas can achieve uniform radiation in the horizontal azimuth angle, making them suitable for non-directional signal transmission and reception, and particularly suitable for hotspot areas in cellular networks requiring multi-user coverage. With the expansion of 5G to the millimeter-wave band and the multi-band integration requirements of 6G, omnidirectional antennas need to support multiple frequency bands simultaneously, such as the Sub-6GHz low-frequency band for wide-area coverage, the 2.4 / 5GHz mid-frequency band for high-capacity transmission, and higher-frequency bands for ultra-high data rates, to achieve seamless switching and efficient spectrum utilization.

[0003] In existing technologies, the main solutions for realizing multi-band omnidirectional cellular antennas include the following: using multi-element parallel or array structures, such as dual-polarized MIMO antennas or microstrip cross-element antennas, to cover dual or tri-band frequencies through multiple independent elements. However, such designs usually rely on complex arrays, such as N-element equal-amplitude linear arrays or collinear folded element arrays, which leads to increased size and cost. Moreover, the gain is uneven in omnidirectional radiation mode, and the gain ripple can reach 2-3 dB, which is not conducive to portable or vehicle-mounted applications. Therefore, there is still a lack of a simple, low-cost omnidirectional tri-band antenna suitable for cellular communication in existing technologies. Utility Model Content

[0004] The purpose of this invention is to provide an improved omnidirectional antenna that enables the input and output of three-band cellular signals with a simple structure.

[0005] Therefore, some embodiments of this application provide an omnidirectional three-band cellular antenna, which includes a connector, a base, an antenna body, a fixing sleeve, a first vibrator, a second vibrator, a support member, a protective sleeve, and a protective sleeve cover. The antenna body includes a rod-shaped body made of rigid material with a silver-plated surface, thereby enabling overall signal conduction. The rod-shaped body includes a pin portion, a fixing portion, a first vibrator mounting portion, a support member mounting portion, and a second vibrator mounting portion arranged sequentially along the axis. The first vibrator is fixed to the first vibrator mounting portion of the antenna body, the support member is fixed to the support member mounting portion of the antenna body, and the second vibrator is fixed to the second vibrator mounting portion of the antenna body and the second cylindrical mounting portion of the support member. The pin portion passes through the base as a receiving output end or a receiving input end, and the fixing portion is installed inside the base. The protective sleeve and the antenna body are fixed to the base by the fixing sleeve. The connector is fixed to the base, and the protective sleeve cover covers the protective sleeve.

[0006] In some embodiments, the connector is an N-type connector with a generally cylindrical body. The inner side of the body includes a base connection portion for connecting the base, and also includes built-in threads to fix the omnidirectional tri-band cellular antenna to the antenna interface of the cellular communication device. The outer side of the body is knurled.

[0007] In some embodiments, the base has a three-section structure, including a columnar connector mating section, a terminal fixing section extending radially smaller from the connector mating section toward the connector side, and an engagement section extending from the connector mating section toward the opposite side of the connector to engage the fixing sleeve, the engagement section being a threaded section to match the thread on the fixing sleeve; the engagement section has a recess inside to receive the fixing portion of the antenna body, and the terminal fixing section and the mating section have holes through which the pin portion of the antenna body passes.

[0008] In some embodiments, an operating section may be provided between the connector mating section and the engagement section to facilitate the engagement of external tools to perform a fastening operation on the base.

[0009] In some embodiments, the first vibrator is fixed to the recess of the base by the fixing sleeve, and the needle is configured as a terminal fixing section extending into the base.

[0010] In some embodiments, the fixing sleeve is a sleeve-shaped structure used to fix the antenna body and the protective sleeve as a whole to the base. The fixing sleeve includes a threaded portion for connecting the engagement section of the base and providing a reference ground together with the base, and a tapered portion for engaging and fixing the protective sleeve.

[0011] In some embodiments, the first oscillator is a copper tube or a silver-plated copper tube with a first length, and the second oscillator is a copper tube or a silver-plated copper tube with a second length; the first length is greater than the second length, and the center point of the first oscillator and the center point of the second oscillator are designed according to 1 / 4 wavelength and 5 / 8 wavelength of the excitation signal, respectively.

[0012] In some embodiments, the support includes a first cylindrical mounting portion and a second cylindrical mounting portion disposed opposite to each other, and a tubular connecting portion between the first cylindrical mounting portion and the second cylindrical mounting portion, wherein the first cylindrical mounting portion is used to engage with the end face of the first oscillator mounting portion, and the second cylindrical mounting portion is used to receive and mount the second oscillator; the support has a silver-plated coating to electrically connect the first oscillator and the second oscillator, while the body is made of an elastic material to allow the first oscillator and the second oscillator to be elastically connected.

[0013] In some embodiments, the protective sleeve is a tubular glass fiber material protective sleeve, one end of the protective sleeve is fixed to the tapered portion of the fixed sleeve, and the protective sleeve cover is fixed to the other end.

[0014] The beneficial effects of this utility model include: the omnidirectional three-band cellular antenna proposed in this utility model achieves precise matching of three frequency bands under cellular communication using only the first and second elements, and is equipped with a protective structure to cope with outdoor environmental challenges such as wind, rain, and vibration, thereby improving the transmission efficiency and coverage reliability of cellular signals. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0016] Figure 2 This is an exploded view of the structure of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the connector structure of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the base of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0019] Figure 5 This is a schematic diagram of the antenna body of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0020] Figure 6 This is a schematic diagram of the structure of the fixing sleeve for an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0021] Figure 7 This is a schematic diagram of the structure of the first and second elements of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0022] Figure 8 This is a schematic diagram of the structure of the support member for an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0023] Figure 9 This is a schematic diagram of the structure of a protective sleeve for an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0024] Figure 10 This is a schematic diagram of the protective sleeve and protective cover of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0025] Figure 11 This is a first partial structural assembly diagram of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0026] Figure 12 This is a second partial structural assembly diagram of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0027] Figure 13 This is a third partial structural assembly diagram of an omnidirectional three-band cellular antenna according to an embodiment of this application.

[0028] Figure 14 This is a fourth partial structural assembly diagram of an omnidirectional three-band cellular antenna according to an embodiment of this application. Detailed Implementation

[0029] The embodiments of this application will now be described with reference to the accompanying drawings.

[0030] The omnidirectional three-band cellular antenna proposed in this application can provide ideal three-band oscillation, thereby realizing the transmission of corresponding cellular signals. Therefore, the omnidirectional three-band cellular antenna 100 of this application, such as... Figure 1 , Figure 2 The device shown includes a connector 1, a base 2, an antenna body 3, a fixing sleeve 4, a first vibrator 5, a second vibrator 6, a support 7, a protective sleeve 8, and a protective sleeve cover 9.

[0031] Connector 1 can be an N-type connector with an impedance of 50 ohms, and its structure is as follows: Figure 3 As shown, the body has a generally cylindrical configuration. The inner side of the body 11 includes a base connection portion to connect the base 2 and the built-in threads, thereby allowing the omnidirectional tri-band cellular antenna to be integrally fixed to the antenna interface of the cellular communication device. The outer side of the body 11 may be machined with knurling 12 for easy operation. The cylindrical configuration of the body provides a reference ground.

[0032] The base 2, as Figure 4 As shown, the structure consists of three sections: a columnar connector mating section 22; a terminal fixing section 21 extending radially from the connector mating section 22 towards the connector side, with a reduced radial dimension; and an engagement section 23 extending from the connector mating section 22 towards the opposite side of the connector to engage the fixing sleeve 4. The engagement section 23 may be threaded to match the threads on the fixing sleeve 4. An operating part 24 may also be provided between the connector mating section 22 and the engagement section 23 to facilitate the use of external tools for fastening the base 2. The engagement section 23 has a recess 231 inside to accommodate the fixing seat 32 of the antenna body 3. Holes are provided in the terminal fixing section 21 and the mating section 22 for the pins 31 of the antenna body 3 to pass through.

[0033] Antenna body 3 as Figure 5 As shown, the rod-shaped body may include a rigid material and be silver-plated on the surface, so that the whole can conduct signals. The rod-shaped body includes a needle part 31, a fixing part 32, a first oscillator mounting part 33, a support mounting part 34, and a second oscillator mounting part 35 arranged sequentially along the axis.

[0034] Fixed sleeve 4 Figure 6 The diagram shows a sleeve-shaped structure used to fix the antenna body 3 and the protective sleeve 8 as a whole to the base 2. The fixing sleeve 4 includes a threaded portion 41 for connecting the engagement section 23 of the base 2 to provide a reference ground together with the base 2, and a tapered portion 42 for fitting and fixing the protective sleeve 8.

[0035] like Figure 7 As shown, the first oscillator 5 can be a copper tube or a silver-plated copper tube with a first length, and the second oscillator 6 can be a copper tube or a silver-plated copper tube with a second length. The first length is greater than the second length, and the center point of the first oscillator and the center point of the second oscillator can be designed according to 1 / 4 wavelength and 5 / 8 wavelength of the excitation signal, respectively.

[0036] like Figure 8 As shown, the support member 7 includes a first cylindrical mounting portion 71 and a second cylindrical mounting portion 72 disposed opposite to each other, and a tubular connecting portion 73 between the first cylindrical mounting portion 71 and the second cylindrical mounting portion 72. The first cylindrical mounting portion 71 is used to mate with the end face of the first oscillator mounting portion 33, and the second cylindrical mounting portion 72 is used to receive and mount the second oscillator 6. The support member 7 has a silver-plated coating to electrically connect the first oscillator and the second oscillator, while the body can be made of an elastic material, such as rubber, thereby allowing the first oscillator and the second oscillator to be elastically connected.

[0037] The first vibrator 5 is mounted on the first vibrator mounting part 33 of the antenna body 3. The first vibrator 5 is fixed to the base 2 by the fixing sleeve 4, and in particular, fixed to the recess 231 of the base by the fixing seat 32. The pin part 31 is configured to extend into the terminal fixing section 21 of the base 2 and connect to the output end of the cellular communication device. The pin part 31 serves as the receiving output (TX) or receiving input (RX) end of the omnidirectional tri-band cellular antenna. Through this, the vibration unit composed of the first vibrator 5, the support member 7, and the second vibrator 6 generates transmission signals of different frequency bands or receives signals of different frequency bands based on the excitation signal provided by the cellular communication device, and inputs them into the cellular communication device.

[0038] The protective sleeve 8, such as Figure 9 The protective sleeve shown can be a tubular fiberglass material, with one end fixed to the tapered portion 42 of the fixing sleeve 4, and the other end able to fix the protective sleeve cap 9, as shown. Figure 10 As shown.

[0039] During assembly, the first vibrator 5 can be fixed to the first vibrator fixing part 33 of the antenna body first, then the support member 7 can be fixed to the support member mounting part 34 of the antenna body, and then the second vibrator can be fixed to the second vibrator mounting part 35 of the antenna body and the second cylindrical mounting part 72 of the support member 7, resulting in the following structure. Figure 11 As shown.

[0040] Will Figure 11 The antenna pin 31 of the assembly shown passes through the joint section 23 and the fixing section 22 of the base and enters the terminal section 21 shown, so that the fixing part 32 is installed in the recess 231 of the base, thereby obtaining... Figure 12 The assembly.

[0041] Will Figure 12 After the protective sleeve 8 and the fixing sleeve 4 are fitted onto the assembly shown, the fixing sleeve 4 is screwed tightly onto the base 2, thereby fixing both the protective sleeve 8 and the antenna body to the base 2, resulting in the following: Figure 13 The assembly shown.

[0042] Will Figure 13 The assembly shown is fixed to the base 2 of the fixed section 22, for example, by an interference fit connector 1. Figure 14 The assembly shown. Adding the protective cap 9 then yields... Figure 1 The omnidirectional three-band cellular antenna shown is shown.

[0043] Using the base as the feed point, by setting the lengths of the first and second elements, signal transmission in three frequency bands within the cellular band can be achieved: the first element to the feed point, the second element to the feed point, and the first element plus the second element to the feed point. By constructing the antenna body, the first element, and the second element in a centrally symmetrical configuration, omnidirectional transmission can be achieved.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. An omnidirectional three-band cellular antenna, characterized in that: The antenna body includes a connector (1), a base (2), an antenna body (3), a fixing sleeve (4), a first vibrator (5), a second vibrator (6), a support (7), a protective sleeve (8), and a protective sleeve cover (9). The antenna body (3) comprises a rod-shaped body made of rigid material, with a silver-plated surface, so that the whole can conduct signals. The rod-shaped body includes a pin portion (31), a fixing portion (32), a first vibrator mounting portion (33), a support mounting portion (34), and a second vibrator mounting portion (35) arranged sequentially along the axis. The first vibrator (5) is fixed to the first vibrator mounting portion (33) of the antenna body, and the support (7) The second vibrator (6) is fixed to the second vibrator mounting part (35) of the antenna body and the second cylindrical mounting part (72) of the support (7); the needle part (31) passes through the base (2) as a receiving output end or receiving input end, and the fixing part (32) is installed inside the base (2); wherein, the protective sleeve (8) and the antenna body (3) are fixed to the base (2) by the fixing sleeve (4); the connector (1) is fixed to the base (2), and the protective sleeve cover (9) covers the protective sleeve (8).

2. The omnidirectional three-band cellular antenna according to claim 1, characterized in that: The connector (1) is an N-type connector with a body (11) that is generally cylindrical. The inner side of the body (11) includes a base connection part (111) to connect the base (2), and also includes a built-in thread (112) so that the omnidirectional three-band cellular antenna can be fixed to the antenna interface of the cellular communication device. The outer side of the body (11) is knurled (12).

3. The omnidirectional three-band cellular antenna according to claim 2, characterized in that: The base (2) has a three-section structure, including a columnar connector mating section (22), a terminal fixing section (21) with a radially reduced size extending from the connector mating section (22) toward the connector side, and a connecting section (23) extending from the connector mating section (22) toward the opposite side of the connector to engage the fixing sleeve (4). The connecting section (23) is threaded to match the thread on the fixing sleeve (4). The connecting section (23) has a recess (231) inside to accommodate the fixing part (32) of the antenna body (3). The terminal fixing section (21) and the mating section (22) have holes through which the pin (31) of the antenna body (3) passes.

4. The omnidirectional three-band cellular antenna according to claim 3, characterized in that: An operating section (24) may also be provided between the connector mating section (22) and the engagement section (23) to facilitate the engagement of external tools to perform a fastening operation on the base (2).

5. The omnidirectional three-band cellular antenna according to claim 3, characterized in that: The first vibrator (5) is fixed in the recess (231) of the base (2) by the fixing sleeve (4), and the needle (31) is configured as a terminal fixing section (21) extending into the base (2).

6. The omnidirectional three-band cellular antenna according to claim 5, characterized in that: The fixing sleeve (4) is a sleeve-shaped structure used to fix the antenna body (3) and the protective sleeve (8) as a whole to the base (2). The fixing sleeve (4) includes a threaded part (41) for connecting the joint section (23) of the base (2) to provide a reference ground together with the base (2), and has a tapered part (42) for fitting and fixing the protective sleeve (8).

7. The omnidirectional three-band cellular antenna according to claim 6, characterized in that: The first oscillator (5) is a copper tube or a silver-plated copper tube with a first length, and the second oscillator (6) is a copper tube or a silver-plated copper tube with a second length; the first length is greater than the second length, and the center point of the first oscillator and the center point of the second oscillator are designed according to 1 / 4 wavelength and 5 / 8 wavelength of the excitation signal, respectively.

8. The omnidirectional three-band cellular antenna according to claim 7, characterized in that: The support member (7) includes a first cylindrical mounting portion (71) and a second cylindrical mounting portion (72) disposed opposite to each other, and a tubular connecting portion (73) between the first cylindrical mounting portion (71) and the second cylindrical mounting portion (72), wherein the first cylindrical mounting portion (71) is used to fit on the end face of the first oscillator mounting portion (33), and the second cylindrical mounting portion (72) is used to receive and mount the second oscillator (6); the support member (7) has a silver-plated coating to electrically connect the first oscillator and the second oscillator, while the body is made of an elastic material to allow the first oscillator and the second oscillator to be elastically connected.

9. The omnidirectional three-band cellular antenna according to claim 8, characterized in that: The protective sleeve (8) is a tubular glass fiber material protective sleeve. One end of the protective sleeve (8) is fixed to the tapered part (42) of the fixed sleeve (4), and the protective sleeve cover (9) is fixed to the other end.

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