CN206498399U - WiFi radio frequency front-end devices - Google Patents
WiFi radio frequency front-end devices Download PDFInfo
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- CN206498399U CN206498399U CN201720100524.7U CN201720100524U CN206498399U CN 206498399 U CN206498399 U CN 206498399U CN 201720100524 U CN201720100524 U CN 201720100524U CN 206498399 U CN206498399 U CN 206498399U
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Abstract
The utility model provides a kind of WiFi radio frequency front-end devices, including：First switch unit, low-noise amplifier, second switch unit, one end of first switch unit is connected with antenna port, the other end of first switch unit is switchably connected with one in transmission channel port, the input of the low-noise amplifier, one end of second switch unit, one in described one end of second switch unit output end switchably with the low-noise amplifier, the other end of first switch unit is connected, and the other end of second switch unit is connected with receiving channel port.The WiFi radio frequency front-end devices can separate the bypass condition of receiving channel and noise magnifying state, so that while low noise is realized, can realize the low insertion loss and higher maximum of bypass channel can bear power.
Description
Technical field
The utility model is related to WiFi radio frequency front-end devices.
Background technology
WiFi radio frequency front-end devices mainly include RF switch, the low-noise amplifier that can be bypassed and corresponding numeral and patrolled
Collect control circuit.Its function is that switching is launched and receiving channel between launching and receiving time slot for WiFi equipment (TDD system).Mesh
The WiFi radio frequency front-end devices of preceding use are as shown in figure 1, the RFFM4555 such as RFMD companies employs the structure.
As shown in figure 1, WiFi radio frequency front-end devices 1 include single-pole double throw RF switch 11, low-noise amplifier (LNA) 13
With digital logic control element 15.Wherein, one end 111 of single-pole double throw RF switch 11 is connected with antenna port 10, and numeral is patrolled
Collect the control single-pole double throw RF switch 11 of control unit 15 so that the changeable one end 111 of the other end 112 and transmission channel port 12
With a connection in the input 131 of low-noise amplifier 13, output end 132 and the receiving channel end of low-noise amplifier 13
Mouth 14 is connected.
In addition, in antenna port 10, transmission channel port 12, receiving channel port 13, Digital Logic control unit difference
It is connected with electrostatic discharge protective circuit (ESD) 16,17,18,19.
One by-pass switch 133 is set on the side of low-noise amplifier 13, Digital Logic control unit 15 is to by-pass switch 133
It is controlled so that by-pass switch 133 is opened or closed.In the state of by-pass switch 133 is controlled as closure, low noise is put
Big device 13 is bypassed.However, the insertion loss under bypass condition is big, and the noise coefficient of low-noise amplifier 13 is high, together
When, the maximum under bypass condition can bear power limited.
Utility model content
In order to solve the problems of the prior art, the utility model provides a kind of WiFi radio frequency front-end devices, including：The
One switch unit, low-noise amplifier, the second switch unit,
One end of first switch unit is connected with antenna port, the other end switchable antenna end of first switch unit
Mouth is connected with one in transmission channel port, the input of the low-noise amplifier, one end of second switch unit,
The changeable receiving channel port in described one end of second switch unit and the output of the low-noise amplifier
A connection in end, the other end of first switch unit, the other end and the receiving channel end of second switch unit
Mouth connection.
Further, first switch unit is SP3T RF switch, and second switch unit is single-pole double throw
RF switch.
WiFi radio frequency front-end devices further comprise Digital Logic control unit, and the Digital Logic control unit is controlled respectively
Make first switch unit and second switch unit.
When the Digital Logic control unit controls first switch unit and second switch unit respectively so that
When the other end of first switch unit is connected with described one end of second switch unit, bypass path is formed.
Further, between described one end of first switch unit and the antenna port, in the described first switching
Between the other end of unit and the transmission channel port, the other end of second switch unit with it is described receive
Partiting dc capacitor is respectively arranged between access port.
Further, the antenna port, the transmission channel port, the receiving channel port, the Digital Logic control
Unit processed is connected to electrostatic discharge protective circuit.
WiFi radio frequency front-end devices of the present utility model can be by the bypass condition of receiving channel and low noise amplification state
Separate, so that while low noise is realized, can realize the low insertion loss and higher maximum of bypass channel can bear
Power.
Brief description of the drawings
Fig. 1 is the structural representation of WiFi radio frequency front-end devices of the prior art；
Fig. 2 is the structural representation of WiFi radio frequency front-end devices according to an embodiment of the invention.
Embodiment
With reference to Figure of description, embodiment of the present utility model is described in detail.
Fig. 2 is the structural representation of WiFi radio frequency front-end devices according to an embodiment of the invention.As shown in Fig. 2 WiFi
Radio frequency front-end device 2 includes the first switch unit 21, low-noise amplifier 22, the second switch unit 23.In the present embodiment, first
Switch unit 21 is SP3T RF switch, and the second switch unit 23 is single-pole double throw RF switch.
One end 211 of first switch unit 21 is connected with antenna port 27, and the other end 212 of the first switch unit 21 can be cut
Change with one in transmission channel port 24, the input 221 of low-noise amplifier 22, one end 231 of the second switch unit 23
Individual connection.
One end 231 of second switch unit 23 switchably switches single with the output end 222, first of low-noise amplifier 22
A connection in the other end 212 of member 21, the other end 232 of the second switch unit 23 is connected with receiving channel port 25.
WiFi radio frequency front-end devices 2 further comprise Digital Logic control unit 26, and Digital Logic control unit 26 is distinguished
Control the first switch unit 21 and the second switch unit 23.
As shown in the dotted arrow A in Fig. 2, Digital Logic control unit 26 controls the first switch unit 21 so that first
The other end 212 of switch unit 21 switchably with transmission channel port 24, the input 221, second of low-noise amplifier 22
A connection in one end 231 of switch unit 23.As shown in the dotted arrow B in Fig. 2, Digital Logic control unit 26 is controlled
Second switch unit 23, one end 232 of changeable second switch unit 23 and the output end 222, second of low-noise amplifier 22
A connection in the other end 231 of switch unit 23.
For example, when Digital Logic control unit 26 controls the first switch unit 21 and the second switch unit 23 so that first
When the other end 212 of switch unit 21 is connected with one end 231 of the second switch unit 23, the bypass path shown in Fig. 2 is formd
P.In this way, the bypass condition of receiving channel port and low noise amplification state can be separated, so as to realize low noise
Meanwhile, it is capable to which power can be born by realizing the low insertion loss and higher maximum of bypass channel.
In addition, as shown in Fig. 2 between one end 211 of the first switch unit 21 and antenna port 27, in the first switching list
Between the other end 212 of member 21 and transmission channel port 24, in the other end 232 and the receiving channel port of the second switch unit 23
Partiting dc capacitor 291,292,293 is respectively arranged between 25.
Further, antenna port 27, transmission channel port 24, receiving channel port 25,26 points of Digital Logic control unit
Electrostatic discharge protective circuit (ESD) 281,282,283,284 is not connected with.
Further, the first switch unit 21, low-noise amplifier 22, the second switch unit 23, partiting dc capacitor 291,
292,293, and the electrostatic discharge protective circuit 281,282,283,284 is arranged in same Semiconductor substrate.
Although by being described in conjunction with specific embodiments to the utility model, for this area ordinary artisan and
Speech, with changing will be apparent according to many replacements, modification made after mentioned above.Therefore, when it is such substitute, repair
Change and change when falling within the spirit and scope of appended claims, it should be included in the utility model.
Claims (7)
1. a kind of WiFi radio frequency front-end devices, it is characterised in that including：First switch unit, low-noise amplifier, the second switching
Unit,
Wherein, one end of first switch unit is connected with antenna port, and the other end of first switch unit is changeable
In the antenna port and transmission channel port, the input of the low-noise amplifier, one end of second switch unit
One connection,
The changeable receiving channel port in described one end of second switch unit and the output end of the low-noise amplifier, institute
State a connection in the other end of the first switch unit, the other end of second switch unit and the receiving channel port
Connection.
2. WiFi radio frequency front-end devices as claimed in claim 1, it is characterised in that first switch unit is SP3T
RF switch, second switch unit is single-pole double throw RF switch.
3. WiFi radio frequency front-end devices as claimed in claim 2, it is characterised in that further comprise that Digital Logic control is single
Member, the Digital Logic control unit controls first switch unit and second switch unit respectively.
4. WiFi radio frequency front-end devices as claimed in claim 3, it is characterised in that when Digital Logic control unit difference
Control first switch unit and second switch unit so that the other end of first switch unit with it is described
During described one end connection of the second switch unit, bypass path is formed.
5. WiFi radio frequency front-end devices as claimed in claim 4, it is characterised in that described the one of first switch unit
Between end and the antenna port, between the other end and the transmission channel of first switch unit, described the
Partiting dc capacitor is respectively arranged between the other end and the receiving channel of two switch units.
6. WiFi radio frequency front-end devices as claimed in claim 5, it is characterised in that the antenna port, the transmission channel,
The receiving channel, the Digital Logic control unit are connected to electrostatic discharge protective circuit.
7. WiFi radio frequency front-end devices as claimed in claim 6, it is characterised in that first switch unit, the low noise
Acoustic amplifier, second switch unit, the partiting dc capacitor, and the electrostatic discharge protective circuit are arranged on same half
On conductor substrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016213782001 | 2016-12-15 | ||
| CN201621378200 | 2016-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206498399U true CN206498399U (en) | 2017-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720100524.7U Active CN206498399U (en) | 2016-12-15 | 2017-01-24 | WiFi radio frequency front-end devices |
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| CN (1) | CN206498399U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880600A (en) * | 2018-07-23 | 2018-11-23 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| CN108988903A (en) * | 2018-07-23 | 2018-12-11 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
-
2017
- 2017-01-24 CN CN201720100524.7U patent/CN206498399U/en active Active
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880600A (en) * | 2018-07-23 | 2018-11-23 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| CN108965533A (en) * | 2018-07-23 | 2018-12-07 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN108964677A (en) * | 2018-07-23 | 2018-12-07 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN108988875A (en) * | 2018-07-23 | 2018-12-11 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN108988877A (en) * | 2018-07-23 | 2018-12-11 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN108988903A (en) * | 2018-07-23 | 2018-12-11 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN108988904A (en) * | 2018-07-23 | 2018-12-11 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN109004942A (en) * | 2018-07-23 | 2018-12-14 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN109039370A (en) * | 2018-07-23 | 2018-12-18 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN109088643A (en) * | 2018-07-23 | 2018-12-25 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN109150204A (en) * | 2018-07-23 | 2019-01-04 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN109167611A (en) * | 2018-07-23 | 2019-01-08 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN109245779A (en) * | 2018-07-23 | 2019-01-18 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN109274379A (en) * | 2018-07-23 | 2019-01-25 | Oppo广东移动通信有限公司 | Radio frequency system and Related product |
| CN109274398A (en) * | 2018-07-23 | 2019-01-25 | Oppo广东移动通信有限公司 | Radio frequency system, signal reception control method and Related product |
| CN109245779B (en) * | 2018-07-23 | 2020-07-28 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| CN108880600B (en) * | 2018-07-23 | 2020-08-04 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| CN109274398B (en) * | 2018-07-23 | 2020-08-04 | Oppo广东移动通信有限公司 | Radio frequency system, signal receiving control method and related product |
| CN109004942B (en) * | 2018-07-23 | 2020-08-18 | Oppo广东移动通信有限公司 | Radio frequency system and electronic equipment |
| CN109167611B (en) * | 2018-07-23 | 2020-08-21 | Oppo广东移动通信有限公司 | Radio frequency system and electronic equipment |
| CN109088643B (en) * | 2018-07-23 | 2020-08-21 | Oppo广东移动通信有限公司 | Radio frequency system and electronic equipment |
| CN108988904B (en) * | 2018-07-23 | 2020-10-30 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| CN108964677B (en) * | 2018-07-23 | 2020-12-08 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| CN108965533B (en) * | 2018-07-23 | 2021-01-08 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| US11165484B2 (en) | 2018-07-23 | 2021-11-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Radio frequency system, method for controlling antenna switching, and related products |
| US11431356B2 (en) | 2018-07-23 | 2022-08-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Radio frequency system, method for controlling antenna switching, and related products |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 1101-22, building a, building 4, Nanjing Baixia hi tech Industrial Development Zone, No.6 Yongzhi Road, Qinhuai District, Nanjing City, Jiangsu Province Patentee after: Jiangsu hairuida Microelectronics Technology Co.,Ltd. Address before: No.188 Tongsheng Avenue, Nantong Development Zone, Nantong City, Jiangsu Province 226200 Patentee before: JIANGSU ANQIWEI MICROELECTRONICS TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220323 Address after: 201210 building 02, building 51, No. 1387, Zhangdong Road, Pudong New Area, Shanghai Patentee after: SHANGHAI ARCHIWAVE ELECTRONIC TECHNOLOGY CO.,LTD. Address before: Room 1101-22, building a, building 4, Nanjing Baixia hi tech Industrial Development Zone, No.6 Yongzhi Road, Qinhuai District, Nanjing City, Jiangsu Province Patentee before: Jiangsu hairuida Microelectronics Technology Co.,Ltd. |