CN101741406A - Antenna switchover control device, antenna terminal equipment and method - Google Patents
Antenna switchover control device, antenna terminal equipment and method Download PDFInfo
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- CN101741406A CN101741406A CN200810225886A CN200810225886A CN101741406A CN 101741406 A CN101741406 A CN 101741406A CN 200810225886 A CN200810225886 A CN 200810225886A CN 200810225886 A CN200810225886 A CN 200810225886A CN 101741406 A CN101741406 A CN 101741406A
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Abstract
The invention provides an antenna switchover control device, an antenna terminal equipment and a method thereof. The antenna switchover control device is embedded in the antenna terminal equipment and comprises a first antenna, a second antenna, a CPU, a radio frequency (RF) switch and a frequency modulation (FM) chip, wherein the first antenna receives FM signals in the first state; the second antenna receives RF signals in the second state; the CPU is used for generating switchover signals and transmitting to the RF switch according to the current working states of different antennae and the preset service logic; the RF switch is connected with the CPU and the first antenna or the second antenna, and used for switching between the first state and the second state according to the generated signals; and the FM chip is connected with the RF switch and used for demodulating the received FM signals. The embodiment of the invention has the following beneficial effects: addition of matching circuit is unnecessary due to adopting embedded FM antennae as antennae to save space, thus the antennae can be embedded in radio terminal equipment and technique implementation is simple; receiving effect on FM wave band is good, and dozens of channels or more are accessible in the open air.
Description
Technical field
The present invention relates to the wireless electron technology, be meant a kind of antenna switching control, wireless terminal device and method especially.
Background technology
Radio broadcasting is at the signal of frequency modulation (FM) wave band, and for example the broadcast singal of 87～108MHz frequency range is the universal signal of radio programming; All have the FM receiving function on a lot of wireless terminal devices, make wireless terminal device can receive functions such as FM broadcasting and tin FM wave band music.
The most frequently used earphone cord of current industry is as the antenna that receives the FM wave band.
The inventor is in realizing process of the present invention, and find that there are the following problems at least in the prior art: the user need additionally carry an earphone cord, use very inconvenient, and if when not having earphone cord the FM receiving function of wireless terminal device can't use.
Summary of the invention
The purpose of this invention is to provide a kind of antenna switching control, wireless terminal device and method, be used for solving prior art, the employed antenna of wireless terminal device carries inconvenient defective.
A kind of antenna switching control is built in wireless terminal device, comprises at least two antennas: first antenna, be used under first state, and receive FM signal; Second antenna is used under second state, receives FM signal; Also comprise: CPU is used for generating switching signal and sending to radio-frequency (RF) switch according to different antennae current working state and predetermined service logic; Described radio-frequency (RF) switch links to each other with described first antenna or described second antenna with described CPU, is used for switching between described first state and described second state according to the described switching signal that generates; The frequency modulation chip links to each other with described radio-frequency (RF) switch, is used for the described FM signal that receives is carried out demodulation.
A kind of wireless terminal device comprises an antenna switching control, and described antenna switching control comprises at least two antennas: first antenna, be used under first state, and receive FM signal; Second antenna is used under second state, receives FM signal; Also comprise: CPU is used for generating switching signal and sending to radio-frequency (RF) switch according to different antennae current working state and predetermined service logic; Described radio-frequency (RF) switch links to each other with described first antenna or described second antenna with described CPU, is used for switching between described first state and described second state according to the described switching signal that generates; The frequency modulation chip links to each other with described radio-frequency (RF) switch, is used for the described FM signal that receives is carried out demodulation.
A kind of employing has the wireless terminal device of operating state detecting unit, in order to receive the method for wireless signal, comprise: when described operating state detecting unit detects second antenna when not in running order, described radio-frequency (RF) switch is linked to each other with first antenna, and receive FM signal from described first antenna; Wherein, described second antenna is an earphone antenna, and described second antenna is not in running order not to be connected to described wireless terminal device for described earphone.
Embodiments of the invention have following beneficial effect, adopt built-in FM antenna little to space requirement as antenna, need not to add match circuit again, therefore can be built in the wireless terminal device, and technology realize simple; Have good reception at the FM wave band, can receive more than ten platform even more out of doors.
Description of drawings
Fig. 1 is the embodiment of the invention receives FM wave band program with earphone cord a wireless device architecture schematic diagram;
Fig. 2 is the structural representation of embodiment of the invention FM antenna;
Fig. 3 is an embodiment of the invention antenna switching control structural representation;
Fig. 4 be the embodiment of the invention built-in the structural representation of wireless terminal device of FM antenna.
Embodiment
For making purpose of the present invention, technical characterictic and implementation result clearer, below in conjunction with the accompanying drawings and the specific embodiments technical scheme of the present invention is described in detail.Among the embodiment provided by the invention, the antenna (hereinafter to be referred as the FM antenna) that receives the FM wave band is built in the inside of wireless terminal device 10, with the FM antenna miniaturization of wireless terminal device 10.
Should comprise when as shown in Figure 1, existing wireless terminal device 10 is used to receive the FM wave band: the body 11 of wireless terminal device 10, earphone cord 12 and earplug 13.
A kind of antenna switching control that the embodiment of the invention provides is built in the inside of wireless terminal device 10, comprises at least two antennas:
First antenna is used under first state, receives the FM signal;
Second antenna is used under second state, receives the FM signal;
The antenna switching control also should comprise:
CPU32 is used for generating switching signal and sending to described radio-frequency (RF) switch 34 according to different antennae current working state and predetermined service logic;
Radio-frequency (RF) switch 34 links to each other with described first antenna or described second antenna with described CPU, is used for switching between described first state and described second state according to the switching signal of feedback;
Frequency modulation (FM) chip 33 links to each other with described radio-frequency (RF) switch, is used for the described FM signal that receives is carried out demodulation.
The antenna switching control that provides more than the employing need not to add match circuit again, therefore can be built in the wireless terminal device, and technology realizes simple; Have good reception at the FM wave band, can receive more than ten platform even more out of doors.
If adopt more antenna, then radio-frequency (RF) switch 34 can be switched between the changeable state that is increased with regard to needing accordingly.
In order to improve the function of antenna switching control, can also increase by one, the operating state detecting unit is used to detect the operating state of described first antenna or second antenna, and sends to described CPU32.
In embodiment provided by the invention, 20, the second antennas specifically adopt earphone antenna if first antenna specifically adopts the FM antenna, promptly with the antenna of earphone cord 12 as reception FM signal; Then as shown in Figure 2, in rectangular coordinate system in space XYZ, be described:
The material of the inner core plug of FM antenna 20 is nickel zinc (NiZn) ferrite 21 of low-loss high magnetic permeability, and nickel-zinc ferrite 21 outside coilings are with the enamelled wire 22 of high conductivity conductor, and for example specifically can adopt thin copper wire is the enamelled wire 22 of heart yearn; One end 23 of the enamelled wire 22 of spiral coiling is as the feedback point of antenna, and the extended line of the enamelled wire 22 at feedback point place is a feeder line 23, and the length of feeder line 23 can suitably be adjusted according to actual product.Wherein, described high magnetic permeability should be determined according to the industrial standard of industry.
It is fixed that the shape of the built-in FM antenna 20 of the body 11 of wireless terminal device 10 can be come according to the actual product needs.
The FM antenna 20 that provides among the embodiment is provided, has effectively reduced antenna volume, can realize receiving the function of FM wave band equally.
Can be in order to take into account earphone cord 12 equally as FM antenna 20, being suitable for different users's use habit, embodiment provided by the invention supports automatic selection and the switching between earphone cord 12 and the built-in FM antenna 20.As shown in Figure 3, to increasing a radio-frequency (RF) switch 34 in the wireless terminal device 10, constitute an antenna switching control, described antenna switching control comprises: FM chip 33, antenna 20, radio-frequency (RF) switch 34, earphone cord 12, earphone base 31 and CPU32.Wherein,
Between FM chip 33 and FM antenna 20, increase a radio-frequency (RF) switch 34, be that radio-frequency (RF) switch 34 connects FM chip 33 and FM antenna 20 and earphone base 31, switch by circuit and to select to connect different antennas, wherein earphone base 31 has connected same earphone cord 12 as antenna, and has constituted earphone together.As can be seen, constituted two strip antenna paths, be respectively according to different antennas:
First path comprises: FM antenna 20, radio-frequency (RF) switch 34 and FM chip 33;
Alternate path comprises: earphone cord 12, earphone base 31, radio-frequency (RF) switch 34 and FM chip 33.
Radio-frequency (RF) switch 34, its circuit handoff functionality is by detecting whether on the throne realization of earphone, be used for switching according to carry out circuit from the switching signal of CPU32, described circuit switching comprises first state, second state, first path is unimpeded under first state, and alternate path is unimpeded under second state.Radio-frequency (RF) switch 34 is specially single-pole double-throw switch (SPDT) (SPDT, Single Pole Double Throw).
Earphone antenna then comprises earphone cord 12 and earphone base 31; Wherein,
Earphone cord 12 is used under second state, receives the FM signal.
Whether earphone base 31, whether be used to be provided with described earphone cord 12 on the throne, promptly in running order.
CPU32 is used for sending switching signal according to predetermined service logic to described radio-frequency (RF) switch 34.
In the course of work of described antenna switching control, when radio-frequency (RF) switch 34 detects earphone when on the throne, radio-frequency (RF) switch 34 sends a level to CPU32, and CPU32 allows the circuit of radio-frequency (RF) switch 34 automatically switch to alternate path according to the service logic that sets in advance; Do not open FM antenna 20 if same earphone is on the throne, perhaps the user extracts earphone cord 12 suddenly in listening to process, and radio-frequency (RF) switch 34 will automatically switch to first path.
The FM antenna 20 that provides among the embodiment is provided, has effectively reduced antenna volume, and farthest reduce conductor around the radio terminal body 11 such as portable terminal the Effect on Performance of built-in FM antenna 20.
Corresponding therewith, the present invention also provides the wireless terminal device 10 of using the antenna switching control; For convenience of description, still specifically adopt FM antenna 20, the second antennas specifically to adopt earphone antenna with first antenna.
As shown in Figure 4, remain in rectangular coordinate system in space XYZ and be described, Z-direction is described the length of wireless terminal device 10, and X-direction is the thickness of wireless terminal device 10, and Y direction is the width of wireless terminal device 10.In wireless terminal device 10 inner places,, be built-in with FM antenna 20 along Y direction near the casing edge.
The antenna switching control that wireless terminal device 10 is adopted specifically comprises:
CPU32 is used for sending switching signal according to predetermined service logic to described radio-frequency (RF) switch 34.
Radio-frequency (RF) switch 34 links to each other with described first antenna or described second antenna with described CPU, is used for switching between described first state and described second state according to the switching signal of feedback; Its circuit handoff functionality is by detecting whether on the throne realization of earphone, be used for switching according to carry out circuit from the switching signal of CPU32, described circuit switching comprises first state, second state, and first path is unimpeded under first state, and alternate path is unimpeded under second state.
Frequency modulation (FM) chip 33 links to each other with described radio-frequency (RF) switch, is used for the described FM signal that receives is carried out demodulation.
In order to improve the function of wireless terminal device 10, antenna switching control wherein can also increase by one, and the operating state detecting unit is used to detect the operating state of described first antenna or second antenna, and sends to described CPU32.
Described earphone antenna then comprises earphone cord 12 and earphone base 31; Wherein,
Earphone cord 12 is used under second state, receives the FM signal.
Whether earphone base 31, whether be used to be provided with described earphone cord 12 on the throne, promptly in running order.
Wherein, first path comprises: FM antenna 20, radio-frequency (RF) switch 34 and FM chip 33;
Alternate path comprises: earphone cord 12, earphone base 31, radio-frequency (RF) switch 34 and FM chip 33.
Casing is used to adhere to fixedly FM antenna 20, at different wireless terminal device 10, and Tong wireless terminal device 10 not even, the particular location that FM antenna 20 is put, size and profile can be according to the appearance design needs adjustment of wireless terminal device 10.
If FM antenna 20 receives radiofrequency signal, then radiofrequency signal is input to FM chip 33 in the wireless terminal device 10 by radio-frequency (RF) switch 34, checks the performance of FM antenna 20 by the receiving sensitivity RSSI that searches platform and check each radio station of storage.
The wireless terminal device 10 that the embodiment of the invention also provides a kind of employing to have the operating state detecting unit, in order to the method for reception wireless signal,
When described operating state detecting unit detects second antenna when not in running order, described radio-frequency (RF) switch is linked to each other with first antenna, and receive FM signal from described first antenna;
Wherein, described second antenna is an earphone antenna, and described second antenna is not in running order not to be connected to described wireless terminal device for described earphone.
Described second antenna is promptly with the antenna of earphone cord 12 as reception FM signal.
The method that adopts present embodiment to provide, wireless terminal device 10 is built in FM antenna 20 in the equipment, and the user no longer is confined to only receive the FM signal by earphone cord.
Embodiments of the invention have following beneficial effect, adopt built-in FM antenna little to space requirement as antenna, need not to add match circuit again, therefore can be built in the wireless terminal device, and technology realize simple; Have good reception at the FM wave band, can receive more than ten platform even more out of doors.
Should be noted that above embodiment is only unrestricted in order to technical scheme of the present invention to be described, all parameter values can be according to the actual conditions adjustment, and in this rights protection scope.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spiritual scope of technical solution of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (11)
1. an antenna switching control is built in wireless terminal device, it is characterized in that, comprises at least two antennas:
First antenna is used under first state, receives FM signal;
Second antenna is used under second state, receives FM signal;
Also comprise:
CPU is used for generating switching signal and sending to radio-frequency (RF) switch according to different antennae current working state and predetermined service logic;
Described radio-frequency (RF) switch links to each other with described first antenna or described second antenna with described CPU, is used for switching between described first state and described second state according to the described switching signal that generates;
The frequency modulation chip links to each other with described radio-frequency (RF) switch, is used for the described FM signal that receives is carried out demodulation.
2. device according to claim 1 is characterized in that, described radio-frequency (RF) switch also comprises:
The operating state detecting unit is used to detect the operating state of described first antenna or second antenna, and sends to described CPU.
3. device according to claim 1 is characterized in that, described first antenna comprises: plug and enamelled wire, and described enamelled wire is around described plug coiling;
Described plug is a nickel-zinc ferrite, and described enamelled wire is the high conductivity conductor.
4. device according to claim 1 is characterized in that, described second antenna is an earphone antenna.
5. device according to claim 1 is characterized in that, described radio-frequency (RF) switch is a single-pole double-throw switch (SPDT).
6. a wireless terminal device comprises an antenna switching control, it is characterized in that, described antenna switching control comprises at least two antennas:
First antenna is used under first state, receives FM signal;
Second antenna is used under second state, receives FM signal;
Also comprise:
CPU is used for generating switching signal and sending to radio-frequency (RF) switch according to different antennae current working state and predetermined service logic;
Described radio-frequency (RF) switch links to each other with described first antenna or described second antenna with described CPU, is used for switching between described first state and described second state according to the described switching signal that generates;
The frequency modulation chip links to each other with described radio-frequency (RF) switch, is used for the described FM signal that receives is carried out demodulation.
7. equipment according to claim 6 is characterized in that, described radio-frequency (RF) switch also comprises:
The operating state detecting unit is used to detect the operating state of described first antenna or second antenna, and sends to described CPU.
8. equipment according to claim 6 is characterized in that, described first antenna comprises: plug and enamelled wire, and described enamelled wire is around described plug coiling;
Described plug is a nickel-zinc ferrite, and described enamelled wire is the high conductivity conductor.
9. equipment according to claim 6 is characterized in that, described second antenna is an earphone antenna.
10. equipment according to claim 6 is characterized in that, described radio-frequency (RF) switch is a single-pole double-throw switch (SPDT).
11. a method that adopts the described wireless terminal device of claim 7 to receive wireless signal is characterized in that,
When described operating state detecting unit detects second antenna when not in running order, described radio-frequency (RF) switch is linked to each other with first antenna, and receive FM signal from described first antenna;
Wherein, described second antenna is an earphone antenna, and described second antenna is not in running order not to be connected to described wireless terminal device for described earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810225886A CN101741406A (en) | 2008-11-04 | 2008-11-04 | Antenna switchover control device, antenna terminal equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810225886A CN101741406A (en) | 2008-11-04 | 2008-11-04 | Antenna switchover control device, antenna terminal equipment and method |
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| CN101741406A true CN101741406A (en) | 2010-06-16 |
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| CN200810225886A Pending CN101741406A (en) | 2008-11-04 | 2008-11-04 | Antenna switchover control device, antenna terminal equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102638285A (en) * | 2012-03-22 | 2012-08-15 | 上海华勤通讯技术有限公司 | Mobile terminal with television function |
| CN103617407A (en) * | 2013-12-07 | 2014-03-05 | 威海北洋电气集团股份有限公司 | Double-wireframe-type dinner plate label reading device and method |
| CN104617971A (en) * | 2015-01-23 | 2015-05-13 | 深圳市航盛电子股份有限公司 | Radio and method for selecting two antennae or single antenna |
| WO2015085541A1 (en) * | 2013-12-12 | 2015-06-18 | 华为终端有限公司 | Antenna device, terminal and antenna multiplexing method |
| CN108965560A (en) * | 2018-07-16 | 2018-12-07 | 厦门美图移动科技有限公司 | Antenna state detection method and terminal equipment |
| CN112219359A (en) * | 2019-08-20 | 2021-01-12 | 深圳市大疆创新科技有限公司 | Transfer communication equipment, machine nest, control system and transfer communication method |
| CN112243066A (en) * | 2020-10-20 | 2021-01-19 | Oppo广东移动通信有限公司 | Method for selecting FM (frequency modulation) playing mode of electronic equipment and electronic equipment |
| CN112350053A (en) * | 2019-08-09 | 2021-02-09 | 富泰华工业（深圳）有限公司 | Antenna structure and wireless communication device with same |
| CN117498974A (en) * | 2023-12-28 | 2024-02-02 | 荣耀终端有限公司 | Terminal equipment, peripheral equipment and terminal system |
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- 2008-11-04 CN CN200810225886A patent/CN101741406A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638285A (en) * | 2012-03-22 | 2012-08-15 | 上海华勤通讯技术有限公司 | Mobile terminal with television function |
| CN102638285B (en) * | 2012-03-22 | 2015-06-03 | 上海华勤通讯技术有限公司 | Mobile terminal with television function |
| CN103617407A (en) * | 2013-12-07 | 2014-03-05 | 威海北洋电气集团股份有限公司 | Double-wireframe-type dinner plate label reading device and method |
| CN103617407B (en) * | 2013-12-07 | 2017-01-18 | 威海北洋电气集团股份有限公司 | Double-wireframe-type dinner plate label reading device and method |
| WO2015085541A1 (en) * | 2013-12-12 | 2015-06-18 | 华为终端有限公司 | Antenna device, terminal and antenna multiplexing method |
| CN104617971A (en) * | 2015-01-23 | 2015-05-13 | 深圳市航盛电子股份有限公司 | Radio and method for selecting two antennae or single antenna |
| CN108965560A (en) * | 2018-07-16 | 2018-12-07 | 厦门美图移动科技有限公司 | Antenna state detection method and terminal equipment |
| CN108965560B (en) * | 2018-07-16 | 2020-04-24 | 厦门美图移动科技有限公司 | Antenna state detection method and terminal equipment |
| CN112350053A (en) * | 2019-08-09 | 2021-02-09 | 富泰华工业（深圳）有限公司 | Antenna structure and wireless communication device with same |
| CN112350053B (en) * | 2019-08-09 | 2023-09-15 | 富泰华工业（深圳）有限公司 | Antenna structure and wireless communication device with same |
| CN112219359A (en) * | 2019-08-20 | 2021-01-12 | 深圳市大疆创新科技有限公司 | Transfer communication equipment, machine nest, control system and transfer communication method |
| CN112243066A (en) * | 2020-10-20 | 2021-01-19 | Oppo广东移动通信有限公司 | Method for selecting FM (frequency modulation) playing mode of electronic equipment and electronic equipment |
| CN112243066B (en) * | 2020-10-20 | 2021-07-23 | Oppo广东移动通信有限公司 | Method for selecting FM (frequency modulation) playing mode of electronic equipment and electronic equipment |
| CN117498974A (en) * | 2023-12-28 | 2024-02-02 | 荣耀终端有限公司 | Terminal equipment, peripheral equipment and terminal system |
| CN117498974B (en) * | 2023-12-28 | 2024-05-31 | 荣耀终端有限公司 | Terminal equipment, peripheral equipment and terminal system |
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Application publication date: 20100616 |
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