Communication device of metal watch based on GNSS antenna and Beidou short message antenna

Abstract

The invention discloses a communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna, and belongs to the technical field of metal watches, the communication device comprises a metal ring, an LC matching circuit, an SPST switch, a radio frequency device antenna tuning switch, an ANT2, an ANT3 and an ANT1, the radio frequency device antenna tuning switch, the ANT2, the ANT3 and the ANT1 are connected outside the metal ring, and the SPST switch and the LC matching circuit are arranged in the metal ring; according to the communication device, the metal whole ring, the LDS support and the SPST radio frequency device switch are arranged, the communication device adopts the metal ring material and the LDS technology to achieve multi-band antenna co-feed and sub-feed, the multi-band antenna efficiency is achieved through the SPST change-over switch, the polarization ratio is small, satellite receiving of the antenna performance is achieved, and the communication device is reliable. Therefore, the human body is not easy to influence the far-area radiation pattern, the input impedance, the radiation efficiency, the radiation coefficient and the like of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal watches, and in particular relates to a communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna. Background Art

[0002] Now, due to the appearance of metal watches, higher requirements are put forward for antennas. Not only the overall structure ID and user experience are required to be good, but also in order to meet the requirements of communication GNSS performance, the antenna is required to have dual-mode positioning, multi-band and broadband characteristics, integration with various switch devices, co-feed and split-feed design with the carrier, easy to realize dual-frequency L1 / L5 GNSS, multi-band including Beidou short message antenna, and realize polarization diversity. The bandwidth of the antenna refers to the frequency band range that meets all the antenna indicators. The operating frequency refers to all frequencies within the antenna bandwidth range;

[0003] The shortcomings of the overall environmental structure of communication watches are that conventional antennas cannot be used, it is not easy to stick the antenna on, and the antenna performance is not good. Therefore, a metal watch communication device based on GNSS antenna and Beidou short message antenna is needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a communication device for a metal watch based on a GNSS antenna and a Beidou short message antenna to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna, comprising a metal ring, an LC matching circuit, an SPST switch, a radio frequency device antenna tuning switch, ANT2, ANT3 and ANT1, wherein the radio frequency device antenna tuning switch, ANT2, ANT3 and ANT1 are connected outside the metal ring, and the SPST switch and the LC matching circuit are arranged inside the metal ring.

[0006] By setting the above structure, the device can realize multi-frequency co-feeding and splitting to achieve antenna performance. The metal ring of the device realizes the co-body splitting of the antenna, which is achieved through the multi-frequency metal ring + ANT1 / ANT2 and ANT3 on the bracket LDS + RF device antenna tuning switch + SPST switch.

[0007] As a preferred solution, seven ports are provided in the LC matching circuit, and the seven ports are respectively set as PORT1, PORT2, PORT3, PORT4, PORT5, PORT6 and PORT7.

[0008] As a preferred solution, the PORT3 is connected to the SPST C, the SPST C is connected to the inductor of 10n, and the inductor of 10n is grounded;

[0009] PORT3 switches the inductance through the SP2T C switch to ensure the left-hand circular polarization of BEIDOUTX.

[0010] As a preferred solution, the PORT4 is connected to the SPST D, the SPST D is respectively connected to a 0.5p capacitor, a 3p capacitor and a 3.3n inductor, the 3p capacitor and the 3.3n inductor are connected to a 0.8p capacitor, and the 0.8p capacitor and the 0.5p capacitor are both grounded;

[0011] PORT4 switches the capacitor and inductor through the SP2T D switch to ensure the left-hand circular polarization of BEIDOUTX.

[0012] As a preferred solution, the PORT5 is connected to a 3p capacitor and a 3.3n inductor, the PORT5 is connected to a 3.9p capacitor and a 4.7n inductor, the 3.9p capacitor and the 4.7n inductor are both connected to a 5.1n inductor and a 0.8p capacitor, the 5.1n inductor is grounded, the 0.8p capacitor is connected to SP2T A, and the SP2T A is connected to L1 and BEIDOUTX;

[0013] L1+L5 and BEIDOUTX are co-fed and fed by PORT5, and L1 and BEIDOUTX switch the feeding signals through the SP2T switch.

[0014] As a preferred solution, the PORT6 is connected to SP2T B, the SP2T B is connected to the inductor of 33n and the inductor of 3.3n, and the inductor of 33n and the inductor of 3.3n are both grounded.

[0015] As a preferred solution, the PORT7 is connected to a 3p capacitor and a 3.3n inductor, and both the 3p capacitor and the 3.3n inductor are connected to BEIDOU-EX.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention is provided with a metal full circle + LDS bracket and an SPST radio frequency device switch. The communication device adopts a metal circle material + LDS process to realize multi-band antenna co-feeding and splitting, and realizes multi-frequency antenna efficiency through an SPST switching switch. It has a small polarization ratio, so that the antenna performance can realize satellite reception and is reliable, and it is not easy for the human body to affect the far-field radiation pattern, input impedance, radiation efficiency, and radiation coefficient of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention in a front view;

[0019] Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention viewed from above;

[0020] Figure 3 This is the LC matching circuit diagram of the present invention.

[0021] In the figure: 1. Metal ring; 2. LC matching circuit; 3. SPST switch; 4. RF device antenna tuning switch; 5. ANT2; 6. ANT3; 7. ANT1. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] The following examples are used to illustrate the present invention, but they cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions. Simple improvements to the method of the present invention under the premise of the concept of the present invention belong to the scope of protection claimed in the present invention.

[0024] See also Figure 1-3 The present invention provides a communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna, comprising a metal ring 1, an LC matching circuit 2, an SPST switch 3, a radio frequency device antenna tuning switch 4, ANT25, ANT36 and ANT17, wherein the radio frequency device antenna tuning switch 4, ANT25, ANT36 and ANT17 are connected outside the metal ring 1, the SPST switch 3 and the LC matching circuit 2 are arranged inside the metal ring 1, seven ports are arranged inside the LC matching circuit 2, and the seven ports are respectively set as PORT1, PORT2, PORT3, PORT4, PORT5, PORT6 and PORT7, PORT3 is connected to SPST C, SPST C is connected to an inductor of 10n, the inductor of 10n is grounded, and PORT3 switches the inductor through the SP2T C switch to ensure the left-hand circular polarization of BEIDOUTX;

[0025] PORT4 is connected to SPST D, SPST D is respectively connected to a 0.5p capacitor, a 3p capacitor and a 3.3n inductor, the 3p capacitor and the 3.3n inductor are connected to a 0.8p capacitor, the 0.8p capacitor and the 0.5p capacitor are both grounded, PORT4 switches the capacitor and the inductor through the SP2TD switch to ensure the left-hand circular polarization of BEIDOUTX;

[0026] PORT5 is connected to a 3p capacitor and a 3.3n inductor, PORT5 is connected to a 3.9p capacitor and a 4.7n inductor, the 3.9p capacitor and the 4.7n inductor are both connected to a 5.1n inductor and a 0.8p capacitor, the 5.1n inductor is grounded, the 0.8p capacitor is connected to SP2T A, SP2T A is connected to L1 and BEIDOUTX, L1+L5 and BEIDOUTX are co-fed and fed by PORT5, and L1 and BEIDOUTX switch the feeding signal through the SP2T switch;

[0027] PORT6 is connected to SP2T B, SP2T B is connected to the inductor of 33n and the inductor of 3.3n, the inductor of 33n and the inductor of 3.3n are both grounded, PORT7 is connected to the capacitor of 3p and the inductor of 3.3n, the capacitor of 3p and the inductor of 3.3n are both connected to BEIDOU-EX.

[0028] The working principle and use process of the present invention: The design scheme of the co-body splitting is realized by adopting the RF device tuning switch and then using the metal shell to return to the ground, ANT17 controls 1164-1189MHZ / 1560-1610MHZ, ANT2 5 brackets LDS controls Beidou short message TX (1610-1622MHZ), ANT2 5 brackets LDS realizes BT / WIFI+Beidou short message-RX (2480-2500MHZ), and multi-frequency is realized through a series of LC matching circuits 2;

[0029] Among them, ANT1 7 uses a metal bezel as a radiator, and the feeding method adopts direct feeding, covering: L1+L5 (1164-1189&1560-1610); ANT2 5 uses the bracket LDS as a radiator to cover Beidou short message TX (1610-1622); ANT3 6 uses the bracket LDS to cover BT / WIFI+Beidou short message-RX (2480-2500); L1+L5+Beidou TX is co-fed and fed by PORT5; L1+BEIDOUTX uses an SP2T switch to switch the feed signal; PORT6 loads an SP2T switch; PORT4 and PORT3 each use an SP2T switch to switch the capacitor and inductor to ensure the left-hand circular polarization of BEIDOUTX;

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A communication device for a metal watch based on a GNSS antenna and a Beidou short message antenna, comprising a metal ring (1), an LC matching circuit (2), an SPST switch (3), a radio frequency device antenna tuning switch (4), ANT2 (5), ANT3 (6) and ANT1 (7), characterized in that: The radio frequency device antenna tuning switch (4), ANT2 (5), ANT3 (6) and ANT1 (7) are connected outside the metal ring (1), and the SPST switch (3) and the LC matching circuit (2) are arranged inside the metal ring (1).

2. A communication device for a metal watch based on a GNSS antenna and a Beidou short message antenna according to claim 1, characterized in that: The LC matching circuit (2) is provided with seven ports, which are respectively set as PORT1, PORT2, PORT3, PORT4, PORT5, PORT6 and PORT7.

3. The communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna according to claim 1, characterized in that: The PORT3 is connected to the SPST C, the SPST C is connected to the inductor of 10n, and the inductor of 10n is grounded.

4. The communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna according to claim 1, characterized in that: The PORT4 is connected to the SPST D, the SPST D is respectively connected to a 0.5p capacitor, a 3p capacitor and a 3.3n inductor, the 3p capacitor and the 3.3n inductor are connected to a 0.8p capacitor, and the 0.8p capacitor and the 0.5p capacitor are both grounded.

5. The communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna according to claim 1, characterized in that: The PORT5 is connected to a 3p capacitor and a 3.3n inductor, the PORT5 is connected to a 3.9p capacitor and a 4.7n inductor, the 3.9p capacitor and the 4.7n inductor are both connected to a 5.1n inductor and a 0.8p capacitor, the 5.1n inductor is grounded, the 0.8p capacitor is connected to SP2T A, and the SP2T A is connected to L1 and BEIDOUTX.

6. The communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna according to claim 1, characterized in that: The PORT6 is connected to SP2T B, the SP2T B is connected to the inductor of 33n and the inductor of 3.3n, and the inductor of 33n and the inductor of 3.3n are both grounded.

7. The communication device of a metal watch based on a GNSS antenna and a Beidou short message antenna according to claim 1, characterized in that: The PORT7 is connected to the 3p capacitor and the 3.3n inductor, and the 3p capacitor and the 3.3n inductor are both connected to BEIDOU-EX.

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