WO2014000461A1

WO2014000461A1 - Cellphone

Info

Publication number: WO2014000461A1
Application number: PCT/CN2013/072174
Authority: WO
Inventors: 罗敏丽; 王亚辉
Original assignee: 惠州Tcl移动通信有限公司
Priority date: 2012-06-29
Filing date: 2013-03-05
Publication date: 2014-01-03
Also published as: CN102761639A; CN102761639B

Abstract

Disclosed is a cellphone. The cellphone comprises a common antenna module, a diplexer, an NFC chip module and a wireless charging chip module, wherein the common antenna module uses a first frequency-band signal received from the exterior and applied to NFC communications or a second frequency-band signal applied to wireless charging; and the diplexer comprises a first end electrically connected to the common antenna module, a second end electrically connected to the NFC chip module, and a third end electrically connected to the wireless charging chip module; when the first end obtains the first frequency-band signal, the diplexer sends the first frequency-band signal to the NFC chip module through the second end; and when the first end obtains the second frequency-band signal, the diplexer sends the second frequency-band signal to the wireless charging chip module through the third end. In the abovementioned manner, the present invention can enable the cellphone NFC and the wireless charging to share an antenna, thereby being simple and easy to achieve, saving space and reducing costs.

Description

Mobile phone

【技术领域】[Technical Field]

The present invention relates to the field of electronic technologies, and in particular, to a mobile phone.

【背景技术】【Background technique】

NFC (near field Communication) is a short-distance non-contact communication method that combines non-contact sensing and wireless connection technology to operate in the 13.56MHz band. Compared with other short-range wireless communication technologies, NFC is safer and has shorter response time. Therefore, it is very suitable as an e-wallet technology in a wireless transmission environment. Since NFC is compatible with existing contactless smart card technology, it has been supported by more and more manufacturers and become an official standard. As mobile phones are increasingly becoming a must-have tool in people's daily lives, telecom operators and mobile phone manufacturers are beginning to expand the functions of mobile phones. Mobile phones are not only used to make calls, but also provide more services, such as replacing modern people. Some cards, such as credit cards, loyalty cards, transportation cards, etc., integrate NFC into the phone, which will enable these functions.

With the rapid development of mobile phones and the development of various applications, people have more frequent charging of mobile phone batteries. Traditional wired charging is very limited for charging mobile phones during travel, which is very inconvenient. So in recent years, for wireless charging (wireless The demand for charging is getting stronger and stronger in August 2010 by the Wireless Charging Alliance (WPC, Wireless Power) Consor1um) has released a unified wireless charging standard Qi1.0, which has been supported and developed by more and more manufacturers, enabling mobile phones to have wireless charging capabilities.

Since the wireless charging Qi standard operates at 110 kHz to 205 kHz, a larger antenna (basically at 30 mm x 50 mm) is required for magnetic field induction. The frequency of NFC is 13.56MHz, and its antenna size is also relatively large (also in the range of 30mm × 40mm ~ 30mm × 50mm). If these two functions are integrated in the mobile phone, it is difficult to put down the two antennas at the same time in the limited size space of the mobile phone.

【发明内容】 [Summary of the Invention]

The technical problem to be solved by the present invention is to provide a mobile phone, which can realize an NFC communication function and a wireless charging function to share one antenna, thereby saving space and reducing cost.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a mobile phone, including a shared antenna module, a dual-channel device, an NFC chip module, and a wireless charging chip module, wherein: the shared antenna module includes a shared antenna and an antenna matching circuit, configured to receive a first frequency band signal suitable for NFC communication or a second frequency band signal suitable for wireless charging from the outside; the dual signal device includes: a first end, and the shared antenna module Electrically connecting; the second end is electrically connected to the NFC chip module; the third end is electrically connected to the wireless charging chip module; and the dual transmitter acquires the first frequency band at the first end Transmitting, by the second end, the first frequency band signal to the NFC chip module, and when the first frequency band acquires the second frequency band signal, the third end is used by the third end The second frequency band signal is sent to the wireless charging chip module, the wireless charging chip module includes a wireless charging chip and a wireless charging matching circuit; the NFC chip module includes an NFC chip and an NFC chip. a circuit, further generating a third frequency band signal suitable for NFC communication to the second end, wherein the dual signal is used by the first end when the second frequency band acquires the third frequency band signal The third frequency band signal is sent to the shared wire module, and the shared antenna module transmits the third frequency band signal.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a mobile phone, including a shared antenna module, a dual-channel device, an NFC chip module, and a wireless charging chip module, wherein: the shared antenna module Receiving, by the outside, a first frequency band signal suitable for NFC communication or a second frequency band signal suitable for wireless charging; the dual signal device includes: a first end electrically connected to the shared antenna module; and a second end, The NFC chip module is electrically connected; the third end is electrically connected to the wireless charging chip module; and the dual signal device passes the second when the first frequency signal is acquired by the first end Sending, by the terminal, the first frequency band signal to the NFC chip module, and when the first frequency band acquires the second frequency band signal, sending, by the third end, the second frequency band signal to the Wireless charging chip module.

The NFC chip module further generates a third frequency band signal suitable for NFC communication to the second end, and the dual signal device obtains the third frequency band signal by using the The first end sends the third frequency band signal to the shared wire module, and the shared antenna module sends the third frequency band signal.

The NFC chip module includes an NFC chip and an NFC matching circuit.

The wireless charging chip module includes a wireless charging chip and a wireless charging matching circuit.

The shared antenna module includes a shared antenna and an antenna matching circuit.

The shared antenna is disposed on a battery back casing of the mobile phone, and the antenna matching circuit, the dual-channel device, the NFC chip module, and the wireless charging chip module are disposed on a motherboard of the mobile phone. on.

The shared antenna is connected to the antenna matching circuit through a ejector pin.

The shared antenna is connected to the antenna matching circuit through a spring piece.

Wherein, the size of the shared antenna is 30 mm×50 mm.

The invention has the beneficial effects that the mobile phone of the invention can realize the NFC communication function and the wireless charging function to share one antenna by adding a dual-signal device, which is simple and easy to implement, saves space and reduces cost.

【附图说明】 [Description of the Drawings]

1 is a schematic structural view of an embodiment of a mobile phone according to the present invention;

2 is a schematic structural view of another embodiment of the mobile phone of the present invention;

3 is a schematic structural view of an embodiment of a dual transmitter according to the present invention;

Figure 4 is a diagram showing an antenna matching circuit of the present invention;

Figure 5 is a circuit diagram of the NFC matching circuit of the present invention;

Figure 6 is a diagram of a wireless charging matching circuit of the present invention.

【具体实施方式】【detailed description】

1 and 2, FIG. 1 and FIG. 2 are schematic structural diagrams of an embodiment of a mobile phone according to the present invention. As shown in the figure, the mobile phone of the present invention includes a shared antenna module 11, a dual-transmitter 12, an NFC chip module 13, and a wireless device. The charging chip module 14 is provided.

The shared antenna module 11 receives a first frequency band signal suitable for NFC communication or a second frequency band signal suitable for wireless charging from the outside;

As shown in FIG. 2, the duplexer 12 includes: a first end 211 electrically connected to the shared antenna module; a second end 212 electrically connected to the NFC chip module 13; and a third end 213 and a wireless charging chip The module 14 is electrically connected to the NFC chip module 13 through the second end 212 when the first terminal 211 acquires the first frequency band signal. When the terminal 211 acquires the second frequency band signal, the second frequency band signal is sent to the wireless charging chip module 14 through the third end 213.

In this embodiment, by adding a dual-signal device in the mobile phone, the NFC communication function and the wireless charging function of the mobile phone share an antenna to obtain a corresponding signal, which has the advantages of simple implementation, space saving, and cost reduction.

The NFC chip module 13 further generates a third frequency band signal suitable for NFC communication to the second end 212. When the second terminal 212 acquires the third frequency band signal, the dual frequency device 12 passes the third frequency band through the first end 211. The signal is sent to the shared wire module 11, and the shared antenna module 11 transmits the third band signal, thereby implementing the NFC signal transmitting function.

The NFC chip module 13 includes an NFC chip 312 and an NFC matching circuit 313.

The wireless charging chip module 14 includes a wireless charging chip 412 and a wireless charging matching circuit 411.

The shared antenna module 11 includes a shared antenna 111 and an antenna matching circuit 112.

The shared antenna 111 is disposed on the battery back casing 100 of the mobile phone. The antenna matching circuit 112, the duplexer 12, the NFC chip module 13 and the wireless charging chip module 14 are disposed on the main board 200 of the mobile phone.

The shared antenna 111 is connected to the antenna matching circuit 112 via a thimble or a spring 113.

The size of the shared antenna 111 is 30 mm × 50 mm. Of course, according to different mobile phones, the size of the shared antenna 111 is changed accordingly.

Please refer to FIG. 3 , which is a schematic structural diagram of an embodiment of a dual signal device according to the present invention. A dual-channel device is a passive three-port device that distinguishes signals at different frequencies and outputs them from different ports or multiplexes signals coming in from different ports. As shown in FIG. 3, the port 213 and the antenna port 211 are equivalent to a filter, and only the WLC is allowed (ie, wireless charging, wireless After receiving the signal (110K-205KHz), the signals of other frequencies will be filtered out; and between port 212 and antenna port 211, except for the WLC band receiving signal (110K-205KHz), the other frequencies can be Think it is straight through. Therefore, when the NFC signal is input to the antenna port 211, the NFC signal will all be output from the port 212 without leaking to the port 213 or affecting the port 213. Similarly, if the port 211 inputs the WLC signal, The WLC will all output from port 213 without leaking to port 212 or otherwise affecting port 212. That is, the input of signals in different frequency bands will be output from the corresponding port without interfering with another port.

Since the NFC antenna and the wirelessly charged antenna are both magnetic field induction coils, the dual signal device of the present invention is a differential form of the dual signal, the differential input first port 211 is connected to the antenna port for matching; the differential output second port 212 is connected to the NFC. The matching of the circuit, the differential output third port 213 is connected to the matching of the wireless charging circuit. When an NFC signal comes in, the dual-channel device will receive the signal from the first port 211 and output it from the second port 212 to the NFC circuit for processing; when a wireless charging signal comes in, the dual-signal will send the signal from the first port. 211 receives incoming and from the third port 213 The output is processed by the wireless charging circuit. At the same time, the NFC chip generates a signal suitable for the NFC communication to the second port 212, and the dual-transmitter transmits the signal suitable for the NFC communication after the second port is sent through the first port 211.

The antenna matching circuit is used to achieve the matching between the shared antenna and the duplexer. The antenna matching circuit of the present invention can be implemented by an antenna matching circuit in the prior art. 4 is a diagram of an antenna matching circuit according to an embodiment of the present invention, including capacitors C12 and C13, and inductors L3 and L4. The matching between the shared antenna and the duplexer is completed by the combination of the capacitor and the inductor.

The NFC matching circuit is a discrete circuit composed of components such as a capacitor inductor to achieve matching between the output of the NFC chip and a diplexer. The NFC matching circuit of the present invention can be implemented by an NFC matching circuit in the prior art. Please refer to FIG. 5 , which is a diagram of an NFC matching circuit according to an embodiment of the present invention, which mainly includes a plurality of components such as a capacitor, an inductor, and a resistor. The matching between the output of the NFC chip and the duplexer is completed by using a combination of a capacitor, an inductor, and a resistor. .

The wireless charging matching circuit is mainly used to achieve matching between the wireless charging chip output and the diplexer. The wireless charging matching circuit of the present invention can be implemented by a wireless charging matching circuit in the prior art. Please refer to FIG. 6 , which is a diagram of a wireless charging matching circuit according to an embodiment of the present invention, which includes two capacitors, and the matching between the output of the wireless charging chip and the diplexer is completed by using the two capacitors together.

It is worth mentioning that the above matching circuits can be adjusted according to the actual situation.

Compared with the prior art, the present invention has the advantages that the mobile phone realizes the NFC communication and the wireless charging function to share one antenna by adding a dual-signal device, which is simple and easy to implement, saves space, and reduces cost.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A mobile phone includes a shared antenna module, a dual-channel device, an NFC chip module, and a wireless charging chip module, wherein:

The shared antenna module includes a shared antenna and an antenna matching circuit for receiving a first frequency band signal suitable for NFC communication or a second frequency band signal suitable for wireless charging from the outside;

The dual signal device includes:

The first end is electrically connected to the shared antenna module;

a second end electrically connected to the NFC chip module;

The third end is electrically connected to the wireless charging chip module;

When the first terminal acquires the first frequency band signal, the dual signal sends the first frequency band signal to the NFC chip module through the second end, and acquires at the first end And sending, by the third end, the second frequency band signal to the wireless charging chip module, where the wireless charging chip module comprises a wireless charging chip and a wireless charging matching circuit;

The NFC chip module includes an NFC chip and an NFC matching circuit, and further generates a third frequency band signal suitable for NFC communication to the second end, where the dual frequency device acquires the third frequency band at the second end And transmitting, by the first end, the third frequency band signal to the shared antenna module, where the shared antenna module sends the third frequency band signal.
A mobile phone includes a shared antenna module, a dual-channel device, an NFC chip module, and a wireless charging chip module, wherein:

The shared antenna module is configured to receive a first frequency band signal suitable for NFC communication or a second frequency band signal suitable for wireless charging from the outside;

The dual signal device includes:

The first end is electrically connected to the shared antenna module;

a second end electrically connected to the NFC chip module;

The third end is electrically connected to the wireless charging chip module;

When the first terminal acquires the first frequency band signal, the dual signal sends the first frequency band signal to the NFC chip module through the second end, and acquires at the first end And sending, by the third end, the second frequency band signal to the wireless charging chip module.
The mobile phone according to claim 2, wherein the NFC chip module further generates a third frequency band signal suitable for NFC communication to the second end, and the duplexer acquires the And transmitting, by the first end, the third frequency band signal to the shared antenna module, where the shared antenna module sends the third frequency band signal.
The mobile phone according to claim 3, wherein the NFC chip module comprises an NFC chip and an NFC matching circuit.
The mobile phone according to claim 3, wherein the wireless charging chip module comprises a wireless charging chip and a wireless charging matching circuit.
The mobile phone according to claim 3, wherein the shared antenna module comprises a shared antenna and an antenna matching circuit.
The mobile phone according to claim 6, wherein the shared antenna is disposed on a battery back casing of the mobile phone, the antenna matching circuit, the dual-transmitter, the NFC chip module, and the wireless charging chip. The module is disposed on the main board of the mobile phone.
The mobile phone according to claim 7, wherein said shared antenna is connected to said antenna matching circuit via a ejector pin.
The mobile phone according to claim 7, wherein said shared antenna is connected to said antenna matching circuit by a spring.
The mobile phone according to claim 6, wherein the size of the shared antenna is 30 mm x 50 mm.