CN215680928U

CN215680928U - Miniaturized circuit based on BT + WIFI + GPS integration three-in-one antenna

Info

Publication number: CN215680928U
Application number: CN202121492654.2U
Authority: CN
Inventors: 徐培文; 余焰生
Original assignee: Shenzhen Duowei Zhilian Technology Co ltd
Current assignee: Shenzhen Duowei Zhilian Technology Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-01-28
Anticipated expiration: 2031-07-01

Abstract

The utility model discloses a miniaturized circuit integrating a BT + WIFI + GPS-based three-in-one antenna, which comprises an antenna, a switch, a BT circuit, a WIFI circuit, a GPS circuit and a chip, wherein the output end of the antenna is connected with the input end of the switch, the output end of the switch is respectively connected with the input ends of the BT circuit, the WIFI circuit and the GPS circuit, and the output end of the BT circuit, the output end of the WIFI circuit and the output end of the GPS circuit are connected with the chip and are subjected to signal processing through the chip. According to the miniaturized circuit integrating the BT, WIFI and GPS into the three-in-one antenna, the BT circuit, the WIFI circuit and the GPS circuit are integrated into one circuit, so that the mobile terminal can realize the functions of BT, WIFI and GPS by only adopting one antenna, the installation space is saved, generated signals are not interfered with one another, and the use performance of the mobile terminal is improved.

Description

Miniaturized circuit based on BT + WIFI + GPS integration three-in-one antenna

Technical Field

The utility model relates to the technical field of Bluetooth, WIFI and GPS, in particular to a miniaturized circuit integrating a three-in-one antenna based on BT + WIFI + GPS.

Background

With the continuous development of communication technology, various mobile terminal devices with communication functions are in a wide range, which brings great convenience to daily communication of people. The mobile communication technology is widely applied to mobile terminals because of having ultrahigh data transmission speed, the mobile terminals generally comprise three modules of BT, WiFi and GPS, and because the working frequencies of the three modules are different, when the mobile terminals are arranged, three antennas need to be installed on a mainboard, so that the mobile terminals not only occupy space and have high cost and large power consumption, but also generate signal interference, and therefore a novel circuit is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a miniaturized circuit integrating a BT, WIFI and GPS into a three-in-one antenna, and aims to solve the technical problems that an existing mobile terminal needs three antennas arranged on a main board, and is large in occupied space, high in cost and large in power consumption.

In order to achieve the purpose, the utility model provides a miniaturized circuit integrated into a three-in-one antenna based on BT + WIFI + GPS, which comprises an antenna, a switch, a BT circuit, a WIFI circuit, a GPS circuit and a chip, wherein the output end of the antenna is connected with the input end of the switch, the output end of the switch is respectively connected with the input ends of the BT circuit, the WIFI circuit and the GPS circuit, and the output end of the BT circuit, the output end of the WIFI circuit and the output end of the GPS circuit are connected with the chip and are subjected to signal processing through the chip.

Preferably, the BT circuit is connected with a first signal filtering circuit, and the first signal filtering circuit is connected with a first rf front-end module SAW for filtering the same-frequency signal on the BT circuit in the middle.

Preferably, the WIFI circuit includes a module composed of a plurality of pi-type or L-type resistance capacitance inductance filtering matching circuits.

Preferably, the GPS circuit is connected to a second signal filtering circuit, and the second signal filtering circuit includes two second rf front-end modules SAW for filtering signals of the same frequency on the GPS circuit and an amplifying circuit electrically connected between the two second rf front-end modules SAW.

Preferably, the chip is an MT6625L chip.

The technical scheme of the utility model has the beneficial effects that:

according to the miniaturized circuit integrating the BT, WIFI and GPS into the three-in-one antenna, the BT circuit, the WIFI circuit and the GPS circuit are integrated into one circuit, so that the mobile terminal can realize the functions of BT, WIFI and GPS by only adopting one antenna, the installation space is saved, generated signals are not interfered with one another, and the use performance of the mobile terminal is improved.

Drawings

Fig. 1 is a block diagram of a miniaturized circuit integrated into a three-in-one antenna based on BT + WIFI + GPS according to an embodiment of the present invention;

fig. 2 is a BT circuit diagram of an embodiment of a miniaturized circuit integrated into a three-in-one antenna based on BT + WIFI + GPS according to the present invention;

fig. 3 is a WIFI circuit diagram of an embodiment of a miniaturized circuit integrated into a three-in-one antenna based on BT + WIFI + GPS of the present invention;

FIG. 4 is a GPS circuit diagram of an embodiment of a miniaturized circuit for integrating a three-in-one antenna based on BT + WIFI + GPS according to the present invention;

FIG. 5 is a circuit diagram of a chip of an embodiment of a miniaturized circuit for integrating a three-in-one antenna based on BT + WIFI + GPS according to the present invention;

fig. 6 is a general circuit diagram of an embodiment of a miniaturized circuit integrated into a three-in-one antenna based on BT + WIFI + GPS according to the present invention.

In the figure: 1 antenna, 2 switches, 3BT circuit, 4WIFI circuit, 5GPS circuit, 6 chips.

Detailed Description

In the following, the embodiments of the present invention will be described in detail with reference to the drawings in the following, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a miniaturized circuit integrating a three-in-one antenna based on BT + WIFI + GPS, which is shown in figures 1-6 and comprises an antenna 1, a switch 2, a BT circuit 3, a WIFI circuit 4, a GPS circuit 5 and a chip 6.

The output end of the antenna 1 is connected with the input end of the switch 2, the output end of the switch 2 is respectively connected with the input ends of the BT circuit 3, the WIFI circuit 4 and the GPS circuit 5, the output end of the BT circuit 3, the output end of the WIFI circuit 4 and the output end of the GPS circuit 5 are all connected with the chip 6, and signal processing is carried out on the output end of the WIFI circuit and the output end of the GPS circuit 5 through the chip 6. The circuit comprises an antenna 1, the antenna 1 is connected with a switch 2, the switch 2 controls signal input and output of a BT circuit 3, a WIFI circuit 4 and a GPS circuit 5, the BT circuit 3, the WIFI circuit 4 and the GPS circuit 5 are respectively connected with a chip, therefore, the BT circuit 3, the WIFI circuit 4 and the GPS circuit 5 are subjected to signal processing through a chip 6, and the BT circuit 3, the WIFI circuit 4 and the GPS circuit 5 are subjected to signal processing and then are subjected to switch distribution through a triplexer to actual mobile terminal application.

In a preferred embodiment, referring to fig. 2, the BT circuit 3 of the present invention is connected to a first signal filtering circuit, and a first rf front end module SAW for filtering the same frequency signal of the BT circuit is connected to the first signal filtering circuit. A first signal filtering circuit is added on the BT circuit 3, the same frequency point on the circuit is filtered through a first radio frequency front end module SAW, and power consumption output can be reduced.

In a preferred embodiment, referring to fig. 3, the WIFI circuit 4 of the present invention includes several pi-type or L-type modules of rc filter matching circuits. And a module consisting of a plurality of pi-shaped or L-shaped resistance-capacitance inductance filtering matching circuits replaces a filter by the filtering effect of the resistance-capacitance inductance filtering matching circuits, so that the installation space is saved. The characteristics that the direct current resistance is high and the impedance is smaller when the alternating current frequency is higher are utilized, the alternating current mixed in the direct current is filtered, and the filtering is realized. After filtering, alternating current returns to a power supply through the capacitor, pure direct current without fluctuation is left on two sides of the capacitor, and based on the same principle, alternating current signals can be screened out by the capacitor, direct current components are filtered out, and the antenna is fed by coupling. Usually, the electrolytic capacitor has large parasitic inductance and poor high-frequency ripple elimination capability, and the nonpolar capacitor has small parasitic inductance and good high-frequency ripple filtering capability.

In a preferred embodiment, with reference to fig. 4, the GPS circuit 5 of the utility model is connected to a second signal filtering circuit, which comprises two second rf front-end modules SAW for filtering the signals of the same frequency on the GPS circuit and an amplifying circuit connected between the two second rf front-end modules SAW. Increase second radio frequency front end module SAW on the GPS circuit, the radio frequency front end module SAW on the GPS circuit 5 is the same with the radio frequency front end module SAW on the BT circuit 3, all be used for filtering other signals on the circuit, when connecting the GPS circuit, carry out first filtration to the satellite signal that the GPS antenna received earlier, again through amplifier circuit to the signal after filtering the processing of enlargiing, carry out the second filtration at last again, and then make the accurate location of GPS antenna, improve the precision of GPS's location, it is worth noting, when filtering for the first time and filtering for the second time, all adopt second radio frequency front end module SAW

In a preferred embodiment, referring to FIG. 5, the chip of the present invention is an MT6625L chip.

The above description is only a part of or preferred embodiments of the present invention, and neither the text nor the drawings should be construed as limiting the scope of the present invention, and all equivalent structural changes, which are made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a miniaturized circuit based on BT + WIFI + GPS integrates into trinity antenna which characterized in that: including antenna, switch, BT circuit, WIFI circuit, GPS circuit and chip, the output linked switch's of antenna input, the input of BT circuit, WIFI circuit and GPS circuit is connected respectively to the output of switch, the output of BT circuit, the output of WIFI circuit and the output of GPS circuit all with the chip is connected, and passes through the chip carries out signal processing to it.

2. The integrated miniaturized circuit of claim 1 based on BT + WIFI + GPS into a triple action antenna, wherein the BT circuit is connected with a first signal filtering circuit, and the first signal filtering circuit is connected with a first rf front end module SAW for filtering the same frequency signal on the BT circuit.

3. The integrated miniaturized circuit of three-in-one antenna based on BT + WIFI + GPS of claim 1, wherein the WIFI circuit comprises a plurality of pi-shaped or L-shaped modules composed of RC-LC filter matching circuits.

4. The integrated miniaturized circuit of claim 1 based on BT + WIFI + GPS in one-in-one antenna, wherein the GPS circuit is connected with a second signal filtering circuit, the second signal filtering circuit comprises two second rf front end modules SAW for filtering the same frequency signal on the GPS circuit and an amplifying circuit connected between the two second rf front end modules SAW.

5. The integrated miniaturized circuit of antenna integrating three functions based on BT + WIFI + GPS as claimed in claim 1 wherein the chip is MT6625L chip.