CN106953179B - Single-port antenna switching system and method - Google Patents
Single-port antenna switching system and method Download PDFInfo
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- CN106953179B CN106953179B CN201710124533.4A CN201710124533A CN106953179B CN 106953179 B CN106953179 B CN 106953179B CN 201710124533 A CN201710124533 A CN 201710124533A CN 106953179 B CN106953179 B CN 106953179B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
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Abstract
The invention relates to a single-port antenna switching system and a method, which is characterized by comprising the following steps: a control module and a metal back cover. The control module includes: a radio frequency channel module for receiving and transmitting a communication signal; the received signal detection module judges the strength of the communication signal according to the communication signal; and a switch logic control module, which transmits a control signal according to the strength of the communication signal; and the metal back cover is provided with a single-pole single-throw (SPST) switch, a single-pole four-throw (SP4T) switch, an antenna structure, an antenna port and a variable capacitor, wherein the antenna structure is connected with the antenna port through the variable capacitor to obtain a first signal or a second signal, the switch logic control module is used for transmitting the control signal switching switch, and the control module is used for adjusting the capacitance value of the variable capacitor to enable the antenna port to generate low-frequency resonance.
Description
Technical Field
The invention relates to the technical field of mobile phone frequency switching operation systems, in particular to a single-port antenna switching system and a single-port antenna switching method for switching frequencies according to signal strength.
Background
With the rapid development of wireless communication technology, the wireless communication industry is developed rapidly, so that the integration of light, thin, short, small and multi-band operation of mobile communication devices becomes a very important design goal, and therefore, an antenna applied to a mobile communication device must have the requirements of small size and multi-band operation, and a wireless network is usually accessed through a built-in antenna of an electronic product with wireless communication function. Therefore, in order to enable a user to access a wireless communication network more conveniently, the bandwidth of an ideal antenna should be increased as much as possible within an allowable range, and the size should be reduced as much as possible, so as to fit the trend of reducing the volume of the portable wireless communication equipment, and integrate the antenna into the portable wireless communication equipment. In addition, as wireless communication technology evolves, the operating frequencies of different wireless communication systems may vary, and therefore, an ideal antenna should cover the frequency bands required by different wireless communication networks with a single antenna.
Disclosure of Invention
In view of the above disadvantages in the prior art, the present invention provides a single-port antenna switching system suitable for an all-metal back cover design, working in multiple frequency bands in the same structure, realizing antenna reconfiguration and directional diagram change, and optimizing the antenna performance of GSM850/900 according to the communication state.
The purpose of the invention and the technical problem to be solved are realized by the following technical measures. According to a single-port antenna switching system provided by the invention, the system comprises: a control module and a metal back cover. The metal back cover is provided with a resonant circuit which comprises a first switch, a second switch, an antenna structure and an antenna port connected through a variable capacitor. The antenna structure is matched with the antenna port, a first signal is obtained when the first switch is switched on, and a second signal is obtained when the first switch is switched off and the second switch is switched to be a 0-ohm resistor. The control module detects the first signal and the second signal obtained through the antenna structure, obtains a first signal value and a second signal value, analyzes whether the difference value of the first signal value and the second signal value is higher than a set value, and controls the switching state of the first switch and the second switch according to the analysis result so as to adjust the resonant circuit and enable the antenna port to generate low-frequency resonance.
In an embodiment of the present invention, the method further includes: if the first switch is turned on, the control module detects a first signal value of the antenna port, and at this time, the variable capacitance value is C1;
if the first switch is turned off and the second switch is switched to 0 ohm resistance, the control module detects a second signal value of the antenna port, and at the moment, the variable capacitance value is C2, and C2 is less than C1 compared with the former state;
when the control module judges that the difference value between the second signal value and the first signal value is higher than a set value, the single-pole single-throw switch is switched off, the single-pole four-throw switch is switched to be a 0-ohm resistor, and the capacitance value of the variable capacitor is adjusted, so that the antenna port generates low-frequency resonance;
when the control module judges that the difference value between the second signal value and the first signal value is not higher than the set value, the first switch is turned on, the capacitance value of the variable capacitor is adjusted, the antenna port generates low-frequency resonance, and the second switch is switched in one of a resistance circuit, an inductance circuit or a capacitance circuit, so that the antenna port realizes the offset of the low-frequency resonance.
In an embodiment of the present invention, the method further includes: the upper end and the lower end of the metal back cover are respectively provided with a gap, the metal back cover is divided into a metal back cover and an antenna end by taking the gap as a boundary, the width of the gap is 0.5-5 mm, and the shape of the gap is linear, C-shaped or U-shaped.
In an embodiment of the present invention, the method further includes: the antenna structure is characterized in that the first switch is a single-pole single-throw switch, the second switch is a single-pole four-throw switch, the antenna structure is connected with an inductor, a capacitor and a resistor through the single-pole four-throw switch, and the inductor, the capacitor and the resistor are connected with the metal rear cover.
The purpose of the invention and the technical problem to be solved can be further realized by adopting the following technical scheme. A single-port antenna switching method comprises the following steps: a control module obtains a first signal through an antenna port when a first switch is switched on through an antenna structure, and obtains a second signal through the antenna port when the first switch is switched off and the second switch is switched to 0 ohm resistance, wherein the antenna structure is connected with the antenna port through a variable capacitor and is connected with the first switch and the second switch to form a resonant circuit; and analyzing whether the difference value of the first signal value and the second signal value is higher than a set value or not through the control module, and controlling the switching states of the first switch and the second switch according to the analysis result so as to adjust the resonant circuit and enable the antenna port to generate low-frequency resonance.
In an embodiment of the present invention, the method further includes: if the first switch is turned on, the control module detects a first signal value of the antenna port, and at this time, the variable capacitance value is C1;
if the first switch is turned off and the second switch is switched to 0 ohm resistance, the control module detects a second signal value of the antenna port, and at the moment, the variable capacitance value is C2, and C2 is less than C1 compared with the former state;
when the control module judges that the difference value between the second signal value and the first signal value is higher than a set value, the single-pole single-throw switch is switched off, the single-pole four-throw switch is switched to be a 0-ohm resistor, and the capacitance value of the variable capacitor is adjusted, so that the antenna port generates low-frequency resonance;
when the control module judges that the difference value between the second signal value and the first signal value is not higher than the set value, the first switch is turned on, the capacitance value of the variable capacitor is adjusted, the antenna port generates low-frequency resonance, and the second switch is switched in one of a resistance circuit, an inductance circuit or a capacitance circuit, so that the antenna port realizes the offset of the low-frequency resonance.
In an embodiment of the present invention, the method further includes: the upper end and the lower end of the metal back cover are respectively provided with a gap, the metal back cover is divided into a metal back cover and an antenna end by taking the gap as a boundary, the width of the gap is 0.5-5 mm, and the shape of the gap is linear, C-shaped or U-shaped.
In an embodiment of the present invention, the method further includes: the antenna structure is characterized in that the first switch is a single-pole single-throw switch, the second switch is a single-pole four-throw switch, the antenna structure is connected with an inductor, a capacitor and a resistor through the single-pole four-throw switch, and the inductor, the capacitor and the resistor are connected with the metal rear cover.
By the technical scheme, the single-port antenna switching system and the method at least have the following advantages and beneficial effects: the antenna is suitable for all-metal back cover design, works in multiple frequency bands in the same structure, realizes antenna reconfiguration and directional diagram change, and optimizes the antenna performance of GSM850/900 according to the communication state.
In conclusion, the invention has obvious progress in technology and obvious positive technical effect, and becomes a novel, advanced and practical novel invention.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of the components of the single-port antenna switching system of the present invention.
Fig. 2 to fig. 3 are flow charts of steps of a single-port antenna switching method according to the present invention.
Fig. 4 to 7 are schematic diagrams of a single-port antenna switching system and method according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the embodiments, structures, features and effects of the single-port antenna switching system and method according to the present invention with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1, a schematic diagram of an original element of the single-port antenna switching system of the present invention is shown, wherein the single-port antenna switching system includes: a control module 110 and a metal back cover 120. The control module 110 includes: a radio frequency path module 111 for transceiving a communication signal; a received signal detection module 112, for determining the strength of the communication signal according to the communication signal; a switch logic control module 113, which transmits a control signal according to the strength of the communication signal.
In fig. 1, a gap is respectively disposed at the upper end and the lower end of the metal back cover 120, the width of the gap is 0.5-5 mm, the gap is usually plastic, and the metal back cover 120 is divided into a metal back cover 130 and an antenna end 140 by using the gap as a boundary. The metal back cover 120 is provided with a first switch and a second switch, in this example, the first switch is a single-pole single-throw (SPST) switch 150, the second switch is a single-pole four-throw (SP4T) switch 160, an antenna structure 170, an antenna port 180, and a variable capacitor 190, the single-pole single-throw (SPST) switch 150 and the single-pole four-throw (SP4T) switch 160 are switched according to the control signal transmitted by the switch logic control module 113, and the capacitance of the variable capacitor 190 is adjusted by the control module 110, so that the antenna port 180 generates low-frequency resonance.
Referring to fig. 2 to fig. 3, a flowchart of a single port antenna switching method according to the present invention is shown.
In fig. 2, the main steps are as follows:
step S210: the signal processing and control cycle begins.
Step S220: and setting the storage state of the last period as a first state through the received signal detection module, and storing a first signal value.
Step S230: and in the communication gap time period, the switch state is switched to be the second state through the switch logic control module, and the second signal value is stored through the received signal detection module.
Step S240: and judging whether the difference between the second signal value and the first signal value is higher than a set value. If the value is higher than the set value (typically 10dB), step S250 is continued; otherwise, if the value is lower than the set value, the step S260 is continued.
Step S250: maintaining a switch state in the second state by the switch logic control module.
Step S260: and adjusting the switch state back to the first state through the switch logic control module.
Step S270: the cycle ends and the next cycle begins.
In fig. 3, the main steps are substantially the same as those in fig. 2, and only the set state difference is as follows:
step S310: the signal processing and control cycle begins.
Step S320: and setting the storage state of the previous period to be a second state through the received signal detection module, and storing a second signal value.
Step S330: in the communication gap time period, the switch state is switched to be the first state through the switch logic control module, and the first signal value is stored through the received signal detection module.
Step S340: and judging whether the difference between the first signal value and the second signal value is higher than a set value. If the value is higher than the set value (typically 10dB), the step S350 is continued; otherwise, if the value is lower than the set value, the step S360 is continued.
Step S350: maintaining a switch state in the first state by the switch logic control module.
Step S360: and adjusting the switch state back to the second state through the switch logic control module.
Step S370: the cycle ends and the next cycle begins.
Please refer to fig. 4 to 7, which are schematic diagrams illustrating a system and method for switching a single-port antenna according to an embodiment of the present invention. Please refer to fig. 1 for its main components.
In fig. 4, it is mainly illustrated that a gap is respectively disposed at the upper end and the lower end of the metal back cover 120, the width of the gap is 0.5-5 mm, the gap is usually plastic, and the metal back cover 120 is divided into a metal back cover 130 and an antenna end 140 by using the gap as a boundary. The metal back cover 120 is provided with a single-pole single-throw (SPST) switch 150, a single-pole four-throw (SP4T) switch 160, an antenna structure 170 and an antenna port 180, the single-pole single-throw (SPST) switch 150 and the single-pole four-throw (SP4T) switch 160 are switched according to the control signal transmitted by the switch logic control module 113, and the capacitance of the variable capacitor 190 is adjusted by the control module 110, so that the antenna port 180 generates low-frequency resonance. The antenna port 180 is disposed on the metal back cover 130 and connected to the antenna structure 170 through the variable capacitor 190, the antenna structure 170 is connected to the metal back cover 130 through the single-pole single-throw (SPST) switch 150, and the antenna structure 170 is connected to the inductor, the capacitor, and the resistor through the single-pole four-throw (SP4T) switch 160 and finally connected to the metal back cover 130.
In the embodiment of fig. 5, the right Single Pole Single Throw (SPST) switch 150 is conductive. At this time, as shown in fig. 5, the current path diagram of the single-port antenna switching system, by adjusting the variable capacitor 190, the antenna port 180 can realize 3-frequency resonance, which is respectively a low-frequency path from the antenna port 180 to the left end of the antenna structure 170 through the variable capacitor 190, so as to generate a low-frequency resonance f 1; the path of the antenna port 180 through the variable capacitance 190 directly to the right end of the antenna structure 170 creates a high frequency resonance f 3. The path of the Single Pole Single Throw (SPST) switch 150 to the right end of the antenna structure 170 produces a mid frequency resonance f 2. In this state, the capacitance value of the variable capacitor 190 is C1, a 3-band operation is generated, f1< f2< f3, and at this time, the left single-pole four-throw (SP4T) switch 160 is switched by at least one of a resistor circuit, an inductor circuit, and a capacitor circuit, thereby shifting the low-frequency resonance f 1.
In the embodiment of fig. 6, the Single Pole Single Throw (SPST) switch 150 is off, the single pole four throw (SP4T) switch 160 is turned to 0 ohm resistance, and the antenna port 180 can achieve 2 frequency resonances by adjusting the variable capacitance 190, respectively the low frequency path of the antenna port 180 through 0 ohm resistance through the single pole four throw (SP4T) switch 160 to the right end to create the low frequency resonance f 4; the antenna port 180 is directed to the high frequency path at the right end of the antenna structure 170 through the variable capacitor 190 to create a high frequency resonance f 5. In the second state, the capacitance value of the variable capacitor 190 is C2, which results in the 2-band operation, f4< f 5. Wherein f4 is the GSM850/900 frequency band. C2< C1 compared to C1 in the previous state.
As described above, the single-port antenna switching system detects the signal quality of the antenna port 180, controls the single-pole four-throw (SP4T) switch 160, the single-pole single-throw (SPST) switch 150, and the rf path 111, and switches the antenna system when a trigger condition occurs. When the antenna is in the first state, and the system operates in the low frequency GSM850/900, the user holds the left slot to cause the quality of the f1 band signal received by the antenna port 180 to be degraded, and at this time, the switch logic control module 113 controls the configuration of the single-pole four-throw (SP4T) switch 160, the single-pole single-throw (SPST) switch 150 and the radio frequency path 111, and configures 0 ohm for the single-pole four-throw (SP4T) switch 160, and turns off the single-pole single-throw (SPST) switch 150, so that the antenna port 180 covers the low frequency GSM850/900 through the right side of the antenna structure 170. The signal transmission and reception of the low frequency f1 are continuously completed through the right slot of the antenna structure 170, and the quality of the low frequency signal is ensured. Similarly, the human hand holds the right gap, and the system switches the low frequency to the left.
In this embodiment, the slit may be a straight line, or may be C-shaped or U-shaped, as shown in fig. 7.
In this embodiment, the metal back cover can be bent to a certain radian to adapt to the shape design of the whole machine.
In this embodiment, at least one variable capacitor is included.
In this embodiment, the metal back cover may also be two separated pieces, and a gap is formed between the two separated pieces, and the gap is usually made of plastic.
In this embodiment, for the low frequency GSM850/900 frequency band, the antenna has at least two working states, and the radiation slots of the two working states are two sides of the antenna respectively, and can be controllably switched.
The single-port antenna switching system and the method have the advantages that: the antenna is suitable for all-metal back cover design, works in multiple frequency bands in the same structure, realizes antenna reconfiguration and directional diagram change, and optimizes the antenna performance of GSM850/900 according to the communication state.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A single port antenna switching system, comprising:
a metal back of body lid, the upper and lower both ends of metal back of body lid set up a gap respectively, and use the gap is the border, divide into behind a metal lid and an antenna end, include:
a first switch;
a second switch;
an antenna structure, which is connected with an antenna port through a variable capacitor, and is connected with the first switch and the second switch to form a resonance circuit, and obtains a first signal when the first switch is conducted, and obtains a second signal when the first switch is disconnected and the second switch is switched to 0 ohm resistance;
the control module is used for detecting the first signal and the second signal obtained by the antenna structure, obtaining a first signal value and a second signal value, analyzing whether the difference value of the first signal value and the second signal value is higher than a set value or not, and when the difference value of the first signal value and the second signal value exceeds the set value, disconnecting the first switch, switching the second switch to a 0-ohm resistor, adjusting the capacitance value of the variable capacitor to adjust the resonance circuit and enable the antenna port to generate low-frequency resonance; when the difference value between the first signal value and the second signal value does not exceed the set value, the first switch is turned on, the capacitance value of the variable capacitor is adjusted, the antenna port generates low-frequency resonance, and the second switch is switched among one of a resistance circuit, a capacitance circuit and an inductance circuit, so that the antenna port forms the offset of the low-frequency resonance;
the antenna structure is connected with an inductor, a capacitor and a resistor device through the single-pole four-throw switch, and the inductor, the capacitor and the resistor device are connected with the metal rear cover;
wherein the switching state is switched by a switching logic control module of the control module during a communication gap period.
2. The single-port antenna switching system according to claim 1, further comprising: the shape of the gap is linear, C-shaped or U-shaped, and the width of the gap is 0.5 mm to 5 mm.
3. A single-port antenna switching method is characterized by comprising the following steps:
a control module obtains a first signal through an antenna port when a first switch is switched on through an antenna structure, and obtains a second signal through the antenna port when the first switch is switched off and a second switch is switched to be 0 ohm resistor, wherein the antenna structure is connected with the antenna port through a variable capacitor and is connected with the first switch and the second switch to form a resonant circuit; the resonant circuit is arranged on a metal back cover, the upper end and the lower end of the metal back cover are respectively provided with a gap, and the resonant circuit is divided into a metal back cover and an antenna end by taking the gap as a boundary; and
analyzing whether the difference value of the first signal value and the second signal value is higher than a set value or not through the control module, and when the difference value of the first signal value and the second signal value exceeds the set value, switching off the first switch, switching the second switch into a 0-ohm resistor, and adjusting the capacitance value of the variable capacitor so as to adjust the resonant circuit and enable the antenna port to generate low-frequency resonance;
when the difference value between the first signal value and the second signal value does not exceed the set value, the first switch is turned on, the capacitance value of the variable capacitor is adjusted, the antenna port generates low-frequency resonance, and the second switch is switched among one of a resistance circuit, a capacitance circuit and an inductance circuit, so that the antenna port forms the offset of the low-frequency resonance;
the antenna structure is connected with an inductor, a capacitor and a resistor through the single-pole four-throw switch, and the inductor, the capacitor and the resistor are connected with the metal rear cover;
wherein the switching state is switched by a switching logic control module of the control module during a communication gap period.
4. The method of claim 3, further comprising: the shape of the gap is linear, C-shaped or U-shaped, and the width of the gap is 0.5 mm to 5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710124533.4A CN106953179B (en) | 2017-03-03 | 2017-03-03 | Single-port antenna switching system and method |
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| CN201710124533.4A CN106953179B (en) | 2017-03-03 | 2017-03-03 | Single-port antenna switching system and method |
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| CN106953179B true CN106953179B (en) | 2021-06-08 |
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| WO2016154851A1 (en) * | 2015-03-30 | 2016-10-06 | 华为技术有限公司 | Terminal |
| CN105789831A (en) * | 2016-04-11 | 2016-07-20 | 深圳市万普拉斯科技有限公司 | Mobile terminal and antenna structure thereof |
| CN106374990A (en) * | 2016-08-25 | 2017-02-01 | 珠海市魅族科技有限公司 | Antenna system, antenna control method and apparatus, and terminal device |
| CN106340724A (en) * | 2016-10-24 | 2017-01-18 | 广东欧珀移动通信有限公司 | Antenna apparatus and mobile terminal |
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