CN105792341B - Wireless communication module and electronic device - Google Patents
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- CN105792341B CN105792341B CN201410814914.1A CN201410814914A CN105792341B CN 105792341 B CN105792341 B CN 105792341B CN 201410814914 A CN201410814914 A CN 201410814914A CN 105792341 B CN105792341 B CN 105792341B
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Abstract
A wireless communication module and an electronic device are disclosed. The wireless communication module includes: the antenna radiator is used for receiving data from the outside and sending the data to the outside in a wireless mode; the signal receiving and transmitting chip is used for processing data received from the outside through the antenna radiating body or generating data sent to the outside by the antenna radiating body; a sensor for sensing approach of a human body within a predetermined threshold range from the antenna radiator and generating a sensing signal indicating whether there is an approaching human body within the predetermined threshold range; and an attenuator connected between the antenna radiator and the signal transceiver chip for selectively attenuating power of the signal transceiver chip based on a sensing signal of the sensor.
Description
Technical Field
The present invention relates to the field of wireless communication, and more particularly, to a wireless communication module and an electronic device mounted with the same.
Background
The SAR is generally called Specific Absorption Rate, Chinese is generally called electromagnetic wave Absorption ratio or Specific Absorption Rate, and is the electromagnetic wave energy Absorption ratio of a mobile phone or a wireless product, and is defined as that an induced electromagnetic field is generated in a human body under the action of an external electromagnetic field, and various organs of the human body are all lossy media, so that the internal electromagnetic field can generate current to cause the Absorption and dissipation of electromagnetic energy.
However, this presents the problem of too low power for normal use, which degrades performance and provides poor throughput experience, and generally does not support dynamic changes in power by the manufacturer of the signal transceiver chip contained in the wireless communication module.
Disclosure of Invention
In view of the above, it is desirable to be able to adaptively adjust the power of a wireless communication module.
According to aspects of the present invention, there are provided kinds of wireless communication modules including an antenna radiator for wirelessly receiving and transmitting data from and to the outside, a signal transceiving chip for processing data received from or generating data transmitted to the outside via the antenna radiator, a sensor for sensing approach of a human body within a predetermined threshold range from the antenna radiator and generating a sensing signal indicating whether there is an approaching human body within the predetermined threshold range, and an attenuator connected between the antenna radiator and the signal transceiving chip for selectively attenuating power of the signal transceiving chip based on a sensing signal of the sensor.
Preferably, in the wireless communication module according to the embodiment of the present invention, the attenuator includes a th switching element having a th end connected to the transceiver chip and a second end including two contacts, wherein the th switching element is closed at a th contact in response to a sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to a sensing signal indicating the absence of an approaching human body, a second switching element having a th end connected to the antenna radiator and a second end including two contacts, wherein the second switching element is closed at a th contact in response to a sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to a sensing signal indicating the absence of an approaching human body, th to a third resistive element, wherein a th end of the th resistive element is connected to an th contact of the th switching element and a second end thereof is grounded, a th end of the second resistive element is connected to a th contact of the th switching element and a second end of the second resistive element is connected to a ground, and a 3638 th contact of the and the third resistive element is connected to a ground terminal of the 3638.
Preferably, in the wireless communication module according to the embodiment of the present invention, the attenuator includes a th switching element having a th end connected to the transceiver chip and a second end including two contacts, wherein the th switching element is closed at the th contact in response to the sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to the sensing signal indicating the absence of an approaching human body, a second switching element having a th end connected to the antenna radiator and a second end including two contacts, wherein the second switching element is closed at the nd contact in response to the sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to the sensing signal indicating the absence of an approaching human body, a th to a third resistive element, wherein a th end of the th resistive element is connected to the 2 nd contact of the th switching element and a second end thereof is connected to the nd contact of the second resistive element, the second end of the second resistive element is grounded, and a second end of the 463 th contact of the is connected to the second end of the second resistive element and the 68542 th contact of the second resistive element.
Preferably, in the wireless communication module according to the embodiment of the present invention, the attenuator includes an th switching element, a second end of which is connected to the transceiver chip, and the second end includes two contacts, wherein the th switching element is closed at the st contact in response to the sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to the sensing signal indicating the absence of an approaching human body, a second switching element, a second th end of which is connected to the antenna radiator, and the second end includes two contacts, wherein the second switching element is closed at the th contact in response to the sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to the sensing signal indicating the absence of an approaching human body, th to a fourth resistive element, wherein a th end of the th resistive element is connected to the th contact of the th switching element and a second end of which is connected to the th end of the second resistive element, a second end of the th resistive element is connected to the second contact 638 th contact of the second resistive element, and a second end of the grounding switch element is connected to the second contact of the th contact of the switch element, and the second switch element is connected to the second contact of the switch element , and the second contact of the switch element is connected to the second switch element, and the second contact of the switch assembly, and the second switch element is connected to the second contact of the switch element .
Preferably, in the wireless communication module according to an embodiment of the present invention, the sensor is integrally configured with the antenna radiator.
Preferably, in the wireless communication module according to the embodiment of the present invention, the attenuator further includes a detecting device for detecting an operating channel of the signal transceiver chip, an attenuation coefficient determining device for determining an attenuation coefficient according to the operating channel of the signal transceiver chip, and an attenuating device for performing attenuation according to the determined attenuation coefficient.
According to another aspect of the present invention, there is provided electronic devices including a wireless communication module including an antenna radiator to wirelessly receive and transmit data from and to the outside, a signal transceiving chip to receive data received from or transmit data desired to be transmitted to the outside via the antenna radiator, a sensor to sense approach of a human body within a predetermined threshold range from the wireless communication module and generate a sensing signal indicating whether there is an approaching human body within the predetermined threshold range, and an attenuator between the antenna radiator and the signal transceiving chip to selectively attenuate power of the signal transceiving chip based on a sensing signal of the sensor.
In the wireless communication module and the electronic device according to the embodiment of the invention, the attenuator is added on a hardware circuit of the wireless communication module, and a sensor capable of generating a sensing signal according to capacitance change caused by the approach of a human body is used near an antenna radiator, so that the operation/non-operation of the attenuator is controlled based on the sensing signal, which is pure hardware solutions.
Drawings
Fig. 1 is a functional block diagram illustrating a configuration of a wireless communication module according to an embodiment of the present invention;
FIG. 2 is a circuit schematic diagram illustrating an th example of a specific configuration of the attenuator shown in FIG. 1;
FIG. 3 is a circuit schematic diagram illustrating a second example of a specific configuration of the attenuator shown in FIG. 1;
FIG. 4 is a circuit schematic diagram illustrating a third example of a specific configuration of the attenuator shown in FIG. 1; and
fig. 5 is a functional block diagram illustrating the configuration of an attenuator according to another embodiment of the present invention.
Detailed Description
Various preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in understanding the exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist understanding, but they are to be construed as merely illustrative. Accordingly, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Also, in order to make the description clearer and simpler, a detailed description of functions and configurations well known in the art will be omitted.
First, a functional configuration of a wireless communication module according to an embodiment of the present invention will be described with reference to fig. 1. As shown in fig. 1, the wireless communication module 100 includes: an antenna radiator 101, a signal transceiving chip 102, a sensor 103, and an attenuator 104.
The antenna radiator 101 is used for receiving and transmitting data from and to the outside in a wireless manner. For example, the antenna radiator 101 here may be a WIFI antenna, a 3G antenna, or the like. Of course, this list is merely an example, and any other antenna capable of transmitting and receiving data wirelessly should be included in the scope of the present invention.
The signal transceiver chip 102 is configured to process data received from the outside through the antenna radiator 101 or generate data transmitted from the antenna radiator to the outside. For example, when the antenna radiator 101 is a WIFI antenna, the signal transceiver chip 102 is a WIFI chip.
The sensor 103 is used to sense the proximity of a human body within a predetermined threshold range from the antenna radiator 101 and generate a sensing signal indicating whether there is a proximate human body within the predetermined threshold range generally places the sensor 103 at a location proximate to the antenna radiator 101. As preferred embodiments, the sensor may be configured integrally with the antenna radiator. the predetermined threshold range described herein generally refers to a very close distance, such as 10-15 mm. for example, as embodiments, when a human hand or SAR test tissue fluid is proximate to the antenna radiator 101, the resulting change in capacitance causes the sensor 103 to generate a sensing signal indicating the presence of a proximate human body and provide the generated sensing signal to the attenuator 104.
The attenuator 104 is connected between the antenna radiator 101 and the signal transceiver chip 102, and is configured to selectively attenuate power of the signal transceiver chip 102 based on a sensing signal of the sensor 103. Specifically, when receiving the sensing signal provided from the sensor 103 indicating the presence of the human body, the wireless communication module 100 is adjusted to an attenuation mode in which the attenuator 104 attenuates the transmission power of the signal transceiver chip 102, so that the transmission power to the antenna radiator 101 can be reduced to ensure human health. Otherwise, the wireless communication module 100 is adjusted to a non-attenuation mode, that is, the attenuator 104 does not attenuate the transmission power of the signal transceiver chip 102, so that the transmission power to the antenna radiator 101 is kept at a high value to ensure performance requirements.
The basic idea of the invention is to add an attenuator to the hardware circuit of the wireless communication module and use a sensor capable of generating a sensing signal according to the capacitance change caused by the approach of a human body near the antenna radiator, so as to control the operation/non-operation of the attenuator based on the sensing signal, which is pure hardware solution.
In general, the attenuator 104 includes two modes, an attenuation mode and a non-attenuation mode, the attenuation mode and the non-attenuation mode correspond to different circuits, respectively, in the attenuation mode, the attenuator corresponds to a th circuit path, in which a attenuation network is included, through which power output from the signal transceiver chip is attenuated, and in the non-attenuation mode, the attenuator corresponds to a second circuit path, in which the attenuation network is not included, through which the power output from the signal transceiver chip is directly passed without attenuation.
Specifically, first, an th configuration example of the attenuator 104 is described with reference to fig. 2. a pi-type attenuation network is shown in fig. 2. as shown in fig. 2, the attenuator 104 includes a -th switching element sw1, a second switching element sw2, -th to third resistance elements R1-R3.
The th switch element sw1 is a single pole double throw switch, the th end of which is connected to the transceiver chip 102 and the second end contains two contacts, i.e., the th contact a1 and the second contact a2 shown in fig. 2. the th switch element sw1 is closed at the th contact a1 in response to a sensing signal indicating the presence of an approaching human body, thereby directing the signal to the th circuit path containing the attenuation network therebelow, and is closed at the second contact a2 in response to a sensing signal indicating the absence of an approaching human body, thereby directing the signal to the second circuit path containing no attenuation network thereabove.
The second switch element sw2 is also a single pole double throw switch, and has a terminal connected to the antenna radiator 101 and a second terminal also having two contacts, i.e., a th contact b1 and a second contact b2. shown in fig. 2. the second switch element sw2 is closed at a th contact b1 in response to a sensing signal indicating the presence of an approaching human body, thereby completing a path of an attenuated signal to the antenna radiator 101, and is closed at a second contact b2 in response to a sensing signal indicating the absence of an approaching human body, thereby completing a path of an unattenuated signal to the antenna radiator 101.
th to third resistance elements R1-R3, as shown in fig. 2, a 0 th end of the th resistance element R1 is connected to a th contact a1 of the th switching element sw1 and a second end thereof is grounded, a th end of the second resistance element R2 is connected to an th end of the th resistance element R1 and a second end thereof is connected to a th end of the third resistance element R3, a th end of the third resistance element R3 is connected to a th contact b1 of the second switching element sw2 and a second end thereof is grounded.
Next, a second configuration example of the attenuator 104 is described with reference to fig. 3. a T-type attenuation network is shown in fig. 3. as shown in fig. 3, the attenuator 104 includes an -th switching element sw1, a second switching element sw2, and -third resistance elements R1-R3.
The th switch element sw1 is a single pole double throw switch, the th end of which is connected to the transceiver chip 102 and the second end contains two contacts, i.e., the th contact a1 and the second contact a2 shown in fig. 3. the th switch element sw1 is closed at the th contact a1 in response to a sensing signal indicating the presence of an approaching human body, thereby directing the signal to the th circuit path containing the attenuation network therebelow, and is closed at the second contact a2 in response to a sensing signal indicating the absence of an approaching human body, thereby directing the signal to the second circuit path containing no attenuation network thereabove.
The second switch element sw2 is also a single pole double throw switch, and has a terminal connected to the antenna radiator 101 and a second terminal also having two contacts, i.e., a th contact b1 and a second contact b2. shown in fig. 3. the second switch element sw2 is closed at a th contact b1 in response to a sensing signal indicating the presence of an approaching human body, thereby completing a path of an attenuated signal to the antenna radiator 101, and is closed at a second contact b2 in response to a sensing signal indicating the absence of an approaching human body, thereby completing a path of an unattenuated signal to the antenna radiator 101.
to third resistor elements R1-R3, as shown in fig. 3, a th end of a th resistor element R1 is connected to a th contact a1 of the th switch element sw1 and a second end thereof is connected to a th end of a second resistor element R2, a second end of the second resistor element R2 is grounded, a th end of a third resistor element R3 is connected to a second end of the th resistor element R1 and a second end thereof is connected to a th contact b1 of the second switch element sw 2.
Next, a third configuration example of the attenuator 104 is described with reference to fig. 4. a bridge T-type attenuation network is shown in fig. 2. as shown in fig. 4, the attenuator 104 includes an -th switching element sw1, a second switching element sw2, and -fourth resistance elements R1-R4.
The th switch element sw1 is a single pole double throw switch, the th end of which is connected to the transceiver chip 102 and the second end contains two contacts, i.e., the th contact a1 and the second contact a2 shown in fig. 4. the th switch element sw1 is closed at the th contact a1 in response to a sensing signal indicating the presence of an approaching human body, thereby directing the signal to the th circuit path containing the attenuation network therebelow, and is closed at the second contact a2 in response to a sensing signal indicating the absence of an approaching human body, thereby directing the signal to the second circuit path containing no attenuation network thereabove.
The second switch element sw2 is also a single pole double throw switch, and has a terminal connected to the antenna radiator 101 and a second terminal also having two contacts, i.e., a th contact b1 and a second contact b2. shown in fig. 4. the second switch element sw2 is closed at a th contact b1 in response to a sensing signal indicating the presence of an approaching human body, thereby completing a path of an attenuated signal to the antenna radiator 101, and is closed at a second contact b2 in response to a sensing signal indicating the absence of an approaching human body, thereby completing a path of an unattenuated signal to the antenna radiator 101.
-fourth resistor element R1-R4. among them, as shown in FIG. 4, the 0 end of the resistor element R1 is connected with the 2 contact a1 of the said 1-th switch element sw1 and the second end is grounded, the 3 end of the second resistor element R2 is connected with the end of the 4-th resistor element R1 and the second end is connected with the end of the third resistor element R3, the end of the third resistor element R3 is connected with the contact b1 of the said second switch element sw2 and the second end is grounded, the end of the fourth resistor component R4 is connected with the contact a1 of the said -th switch element sw1 and the second end is connected with the b1 of the said second switch element sw 2.
Of course, the three attenuators described above with reference to fig. 2 to 4 are only examples. It will be appreciated by those skilled in the art that attenuators employing any other attenuation network and/or any other switching element may be similarly applied to the present invention and are intended to be included within the scope of the present invention.
In addition, the attenuation coefficient of the attenuator may be fixed. Of course, as a more preferred embodiment, the attenuation coefficient of the attenuator may be varied. For example, the attenuation coefficient may be adjusted according to the different channels on which the transceiver chip operates.
The case where the antenna radiator is a WIFI antenna and the signal transceiver chip is a WIFI chip is taken as an example for explanation. A channel is a channel through which a signal is transmitted in a communication system, and is a transmission medium through which the signal is transmitted from a transmitting end to a receiving end. Taking a wireless router as an example, a channel can be understood as different frequency bands in space. When the frequency band is operated in the 2.4G frequency band according to the IEEE 802.11b/G standard, the frequency range is 2.400-2.4835 GHz, and the bandwidth is 83.5M. It is divided into 14 sub-channels, each 22MHz wide. There is frequency overlap between adjacent channels (e.g., 1 channel has frequency overlap with 2, 3, 4, 5 channels). Only 3 (1, 6, 11) non-interfering channels are in the whole frequency band, so WIFI usually works on channels 1, 6, 11.
In general, however, in practice, when WIFI operates on different channels, its output power is different, and therefore, the amount of attenuation required when a human body approaches is correspondingly different, if the system sets the same attenuation coefficient regardless of the operating channel, unnecessary loss of power may occur, and therefore, as a more preferred embodiment, the attenuator 104 may further include a detecting means 1041 for detecting the operating channel of the transceiver chip, an attenuation coefficient determining means 1042 for determining the attenuation coefficient according to the operating channel of the transceiver chip, and an attenuating means 1043 for attenuating according to the determined attenuation coefficient.
Also, according to an embodiment of the present invention, an electronic device may include a wireless communication module, as described above, including an antenna radiator to wirelessly receive and transmit data from and to the outside, a signal transceiving chip to receive data received from or transmit data desired to be transmitted to the outside via the antenna radiator, a sensor to sense approach of a human body within a predetermined threshold range from the wireless communication module and to generate a sensing signal indicating whether there is an approaching human body within the predetermined threshold range, and an attenuator between the antenna radiator and the signal transceiving chip to selectively attenuate power of the signal transceiving chip based on a sensing signal of the sensor.
Of course, the electronic device may comprise other circuit modules besides the wireless communication module, which differ depending on the different kinds of electronic devices and functions to be implemented. Since other circuit blocks are not the focus of the present invention, they will not be described in the present specification.
For example, the electronic device including the wireless communication module according to the embodiment of the present invention may be a portable device such as a mobile phone and a tablet computer.
Even though a manufacturer of a signal transceiving chip does not support dynamic change of power, dynamic adjustment of power can be achieved in the final effect, thereby reducing transmission power when approaching a human body and increasing transmission power when moving away from a human body to simultaneously satisfy requirements in both health and performance experience of a human body.
It should be noted that in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises an series of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that the -series processing described above includes not only processing performed in time series in the order described herein, but also processing performed in parallel or separately, rather than in time series.
Based on the understanding that the present invention will contribute to the background art, all or part of which may be embodied in the form of a software product that may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and that includes instructions for causing computer devices (which may be personal computers, servers, or network devices, etc.) to perform the methods described in the various embodiments or parts of the embodiments of the present invention.
While the present invention has been described in detail, the principle and embodiments of the present invention have been illustrated by the specific examples and the description is only for the purpose of understanding the method and the core concept of the present invention, and meanwhile, the invention will not be limited by the content of the present description since the modifications of the specific embodiments and the application scope will occur to those skilled in the art based on the concept of the present invention.
Claims (6)
1, A wireless communication module, comprising:
the antenna radiator is used for receiving data from the outside and sending the data to the outside in a wireless mode;
the signal receiving and transmitting chip is used for processing data received from the outside through the antenna radiating body or generating data sent to the outside by the antenna radiating body;
a sensor for sensing approach of a human body within a predetermined threshold range from the antenna radiator and generating a sensing signal indicating whether there is an approaching human body within the predetermined threshold range; and
an attenuator connected between the antenna radiator and the signal transceiver chip for selectively attenuating power of the signal transceiver chip based on a sensing signal of the sensor,
wherein the attenuator further comprises:
the detection device is used for detecting the working channel of the signal transceiving chip;
attenuation coefficient determining means for determining an attenuation coefficient based on a working channel of the signal transceiver chip; and
and the attenuation device is used for carrying out attenuation according to the determined attenuation coefficient.
2. The wireless communication module of claim 1, wherein the attenuator comprises:
an th switching element of which a th terminal is connected with the signal transceiving chip and a second terminal includes two contacts, wherein the th switching element is closed at the th contact in response to a sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to a sensing signal indicating the absence of an approaching human body;
a second switch element having an th end connected to the antenna radiator and a second end including two contacts, wherein the second switch element is closed at the th contact in response to a sensing signal indicating the presence of a close human body and is closed at the second contact in response to a sensing signal indicating the absence of a close human body;
th to third resistance elements, wherein the 0 th end of the th resistance element is connected with the th contact of the th switch element and the second end is grounded, the th end of the second resistance element is connected with the th end of the th resistance element and the second end is connected with the th end of the third resistance element, and the th end of the third resistance element is connected with the th contact of the second switch element and the second end is grounded.
3. The wireless communication module of claim 1, wherein the attenuator comprises:
an th switching element of which a th terminal is connected with the signal transceiving chip and a second terminal includes two contacts, wherein the th switching element is closed at the th contact in response to a sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to a sensing signal indicating the absence of an approaching human body;
a second switch element having an th end connected to the antenna radiator and a second end including two contacts, wherein the second switch element is closed at the th contact in response to a sensing signal indicating the presence of a close human body and is closed at the second contact in response to a sensing signal indicating the absence of a close human body;
th to third resistance elements, wherein the th end of the th resistance element is connected with the th contact of the th switch element and the second end is connected with the th end of the second resistance element, the second end of the second resistance element is grounded, the th end of the third resistance element is connected with the second end of the th resistance element and the second end is connected with the th contact of the second switch element.
4. The wireless communication module of claim 1, wherein the attenuator comprises:
an th switching element of which a th terminal is connected with the signal transceiving chip and a second terminal includes two contacts, wherein the th switching element is closed at the th contact in response to a sensing signal indicating the presence of an approaching human body and is closed at the second contact in response to a sensing signal indicating the absence of an approaching human body;
a second switch element having an th end connected to the antenna radiator and a second end including two contacts, wherein the second switch element is closed at the th contact in response to a sensing signal indicating the presence of a close human body and is closed at the second contact in response to a sensing signal indicating the absence of a close human body;
th to fourth resistance elements, wherein the 0 th end of the th resistance element is connected with the 2 th contact of the 1 th switching element and the second end is connected with the th end of the second resistance element, the second end of the second resistance element is grounded, the th end of the third resistance element is connected with the second end of the th resistance element and the second end is connected with the th contact of the second switching element, the th end of the fourth resistance element is connected with the th contact of the th switching element and the second end is connected with the th contact of the second switching element.
5. The wireless communication module of claim 1, wherein the sensor is configured integrally with the antenna radiator.
An electronic device of the kind , comprising:
a wireless communication module for the wireless communication module,
wherein the wireless communication module comprises:
the antenna radiator is used for receiving data from the outside and sending the data to the outside in a wireless mode;
a signal transceiving chip for receiving data received from the outside through the antenna radiator or transmitting data desired to be transmitted to the outside to the antenna radiator;
a sensor for sensing approach of a human body within a predetermined threshold range from the wireless communication module and generating a sensing signal indicating whether there is an approaching human body within the predetermined threshold range; and
an attenuator positioned between the antenna radiator and the signal transceiving chip for selectively attenuating power of the signal transceiving chip based on a sensing signal of the sensor,
wherein the attenuator further comprises:
the detection device is used for detecting the working channel of the signal transceiving chip;
attenuation coefficient determining means for determining an attenuation coefficient based on a working channel of the signal transceiver chip; and
and the attenuation device is used for carrying out attenuation according to the determined attenuation coefficient.
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| CN201048379Y (en) * | 2007-04-28 | 2008-04-16 | 京信通信系统（中国）有限公司 | Time slot gain control circuit |
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| US8432322B2 (en) * | 2009-07-17 | 2013-04-30 | Apple Inc. | Electronic devices with capacitive proximity sensors for proximity-based radio-frequency power control |
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