CN112543034A - Low-frequency filter circuit, communication chip module and antenna system based on 9x07 platform - Google Patents
Low-frequency filter circuit, communication chip module and antenna system based on 9x07 platform Download PDFInfo
- Publication number
- CN112543034A CN112543034A CN202011457255.2A CN202011457255A CN112543034A CN 112543034 A CN112543034 A CN 112543034A CN 202011457255 A CN202011457255 A CN 202011457255A CN 112543034 A CN112543034 A CN 112543034A
- Authority
- CN
- China
- Prior art keywords
- platform
- low
- filter circuit
- management chip
- power management
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1018—Means associated with receiver for limiting or suppressing noise or interference noise filters connected between the power supply and the receiver
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The invention discloses a low-frequency filter circuit, a communication chip module and an antenna system based on a 9x07 platform, wherein the 9x07 platform comprises a baseband, a transceiver and a power management chip for controlling the power of the baseband and the transceiver, wherein the power is supplied to the power management chip through a power supply pin of the 9x07 platform, and the low-frequency filter circuit is arranged between the power supply pin and the power management chip to filter low-frequency noise conducted outside by the power management chip. Therefore, low-frequency noise returned from the interior of the power management chip is eliminated, and the antenna radiation sensitivity under low frequency is optimized.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a low-frequency filter circuit based on a 9x07 platform, a wireless communication chip module and a wireless antenna system.
Background
At present, in a 9x07 platform in the related art, since the Vbatt-BB circuit design usually does not reserve a filter circuit location, some low-frequency noise returned by the power management unit PMU may be radiated through the Vbatt path, resulting in poor TIS (Total Isotropic Sensitivity).
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide a low-frequency filter circuit based on a 9x07 platform, which is capable of eliminating low-frequency noise returned from the inside of a power management chip and optimizing antenna radiation sensitivity at low frequency.
The second objective of the present invention is to provide a wireless communication chip module.
A third object of the present invention is to provide a wireless antenna system.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a low-frequency filter circuit based on a 9x07 platform, where the 9x07 platform includes a baseband, a transceiver, and a power management chip for controlling power of the baseband and the transceiver, and a power supply pin of the 9x07 platform provides power for the power management chip, and the low-frequency filter circuit is disposed between the power supply pin and the power management chip to filter low-frequency noise conducted by the power management chip.
According to the low-frequency filter circuit based on the 9x07 platform, the power supply pin of the 9x07 platform provides power for the power management chip, and the low-frequency filter circuit arranged between the power supply pin and the power management chip filters low-frequency noise conducted outside by the power management chip. Therefore, low-frequency noise returned from the inside of the power management chip is eliminated, the antenna radiation sensitivity under low frequency is optimized, meanwhile, the design requirements of peripheral circuits are reduced, and the design cost is reduced.
In addition, the low-frequency filter circuit based on the 9x07 platform according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the low frequency filter circuit comprises a first filter capacitor and a second filter capacitor connected in parallel, and the first filter capacitor and the second filter capacitor connected in parallel are connected between the power supply pin and the ground.
According to an embodiment of the present invention, the first filter capacitor and the second filter capacitor connected in parallel are disposed close to the power supply pin.
According to an embodiment of the present invention, the capacitance value of the first filter capacitor is equal to the capacitance value of the second filter capacitor.
According to one embodiment of the invention, the capacitance values of the first filter capacitor and the second filter capacitor are both 95-105 PF.
According to one embodiment of the present invention, the capacitance value of the first filter capacitor and the second filter capacitor is 100 PF.
According to one embodiment of the invention, the power pin is the Vbatt _ BB port of the 9x07 platform.
In order to achieve the above object, a wireless communication chip module according to an embodiment of the second aspect of the present invention includes the low frequency filter circuit based on the 9x07 platform as described above.
According to the wireless communication chip module, the low-frequency filter circuit based on the 9x07 platform is adopted, so that low-frequency noise returned from the interior of the power management chip can be eliminated, and the antenna radiation sensitivity under low frequency is optimized.
In order to achieve the above object, a wireless antenna system according to an embodiment of the third aspect of the present invention includes the low frequency filter circuit based on the 9x07 platform as described above.
According to the wireless antenna system provided by the embodiment of the invention, the low-frequency filter circuit based on the 9x07 platform is adopted, so that the low-frequency noise returned from the interior of the power management chip can be eliminated, and the antenna radiation sensitivity under low frequency is optimized.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a block diagram illustrating a 9x07 platform according to an embodiment of the present invention;
fig. 2 is a block diagram of a low frequency filter circuit based on a 9x07 platform according to an embodiment of the present invention;
fig. 3 is a block diagram of a low frequency filter circuit based on a 9x07 platform according to an embodiment of the invention;
FIG. 4 is a decibel diagram of low frequency noise without the low frequency filter circuit;
FIG. 5 is a schematic diagram of low frequency noise in decibels when a low frequency filter circuit based on a 9x07 platform according to an embodiment of the present invention is installed;
FIG. 6 is a block diagram of a wireless communication chip module according to an embodiment of the present invention;
fig. 7 is a block diagram of a wireless antenna system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The low frequency filter circuit, the wireless communication chip module and the wireless antenna system based on the 9x07 platform according to the embodiment of the invention are described below with reference to the accompanying drawings.
Before the low frequency filter circuit, the wireless communication chip module and the wireless antenna system based on the 9x07 platform according to the embodiment of the present invention are introduced, the 9x07 platform according to the embodiment of the present invention is introduced.
Fig. 1 is a block diagram of a 9x07 platform according to an embodiment of the invention.
As shown in fig. 1, the 9x07 platform includes a baseband, a transceiver, and a power management chip that provides power control for the baseband and the transceiver.
Fig. 2 is a block diagram of a low frequency filter circuit based on a 9x07 platform according to an embodiment of the present invention.
As shown in fig. 2, the power supply pin of the 9x07 platform supplies power to the power management chip, and the low frequency filter circuit 100 is disposed between the power supply pin and the power management chip to filter low frequency noise conducted by the power management chip.
Optionally, as shown in FIG. 2, the supply pin is the Vbatt _ BB port of the 9x07 platform.
Specifically, in the embodiment of the present invention, when the power supply pin of the 9x07 platform supplies power to the power management chip, the low-frequency filter circuit 100 disposed between the power supply pin and the power management chip may be used to filter the low-frequency noise conducted by the power management chip, so as to eliminate the low-frequency noise returned from the inside of the power management chip, and optimize the antenna radiation sensitivity at low frequency.
It should be understood that, after the filtering circuit 100 filters the low-frequency noise conducted outside by the power management chip, eliminates the low-frequency noise returned inside the power management chip, and optimizes the antenna radiation sensitivity at low frequency, the design requirements for the peripheral circuit can be further reduced, for example, the requirement for the routing accuracy of the peripheral circuit is reduced.
The design of the low frequency filter circuit 100 is described below with reference to the drawings and an embodiment of the present invention.
Further, as shown in fig. 3, the low frequency filter circuit 100 includes a first filter capacitor C1 and a second filter capacitor C2 connected in parallel, and the first filter capacitor C1 and the second filter capacitor C2 connected in parallel are connected between the power supply pin and the ground.
It should be noted that the capacitance of the first filter capacitor C1 is equal to the capacitance of the second filter capacitor C2.
Optionally, the capacitance values of the first filter capacitor C1 and the second filter capacitor C2 are both 95 PF to 105 PF.
Further, in the embodiment of the present invention, the capacitance values of the first filtering capacitor C1 and the second filtering capacitor C2 may preferably be 100PF, so as to achieve an optimal effect of filtering the low-frequency noise conducted outside by the power management chip, specifically, as shown in fig. 4, when the low-frequency filtering circuit 100 is not provided, the low-frequency interference noise is substantially at-80 dBm, as shown in fig. 5, after the low-frequency filtering circuit 100 is provided, the low-frequency interference noise is substantially at-100 dBm, and the low-frequency interference noise is significantly filtered.
Further, as shown in fig. 3, the first filtering capacitor C1 and the second filtering capacitor C2 connected in parallel are disposed close to the power supply pin.
It should be noted that, in the embodiment of the present invention, the closer the first filter capacitor C1 and the second filter capacitor C2 connected in parallel are to the power supply pin, the better the filtering effect of the low frequency filter circuit 100 is.
In summary, according to the low-frequency filter circuit based on the 9x07 platform of the embodiment of the present invention, the power supply pin of the 9x07 platform provides power to the power management chip, and the low-frequency filter circuit disposed between the power supply pin and the power management chip filters the low-frequency noise conducted by the power management chip. Therefore, low-frequency noise returned from the inside of the power management chip is eliminated, the antenna radiation sensitivity under low frequency is optimized, meanwhile, the design requirements of peripheral circuits are reduced, and the design cost is reduced.
Fig. 6 is a block diagram of a wireless communication chip module according to an embodiment of the invention.
As shown in fig. 6, the wireless communication chip module 1000 includes the low frequency filter circuit 100 based on the 9x07 platform according to the foregoing embodiment of the present invention.
It should be noted that the wireless communication chip module 1000 according to the embodiment of the present invention corresponds to the specific implementation of the low-frequency filter circuit 100 based on the 9 × 07 platform according to the foregoing embodiment of the present invention, and details are not repeated herein.
In summary, according to the wireless communication chip module of the embodiment of the invention, by using the low-frequency filter circuit based on the 9x07 platform, the low-frequency noise returned from the inside of the power management chip can be eliminated, and the antenna radiation sensitivity under low frequency can be optimized.
Fig. 7 is a block diagram of a wireless antenna system according to an embodiment of the present invention.
As shown in fig. 7, the wireless antenna system 2000 includes the low frequency filter circuit 100 based on the 9x07 platform according to the embodiment of the present invention.
It should be noted that the wireless antenna system 2000 according to the embodiment of the present invention corresponds to the specific implementation of the low frequency filter circuit 100 based on the 9x07 platform according to the foregoing embodiment of the present invention, and details thereof are not repeated herein.
In summary, according to the wireless antenna system of the embodiment of the present invention, by using the low-frequency filter circuit based on the 9x07 platform, the low-frequency noise returned from the inside of the power management chip can be eliminated, and the antenna radiation sensitivity at low frequency can be optimized.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A low-frequency filter circuit based on a 9x07 platform is characterized in that the 9x07 platform comprises a baseband, a transceiver and a power management chip for controlling power of the baseband and the transceiver, wherein power is supplied to the power management chip through a power supply pin of the 9x07 platform, and the low-frequency filter circuit is arranged between the power supply pin and the power management chip to filter low-frequency noise conducted outside by the power management chip.
2. The 9x07 platform-based low frequency filter circuit according to claim 1, wherein the low frequency filter circuit comprises a first filter capacitor and a second filter capacitor connected in parallel, and the first filter capacitor and the second filter capacitor connected in parallel are connected between the power supply pin and ground.
3. The 9x07 platform-based low frequency filter circuit according to claim 2, wherein the parallel first filter capacitor and second filter capacitor are disposed near the supply pin.
4. The 9x07 platform-based low frequency filter circuit according to claim 2, wherein a capacitance value of the first filter capacitor is equal to a capacitance value of the second filter capacitor.
5. The 9x07 platform-based low-frequency filter circuit as claimed in claim 4, wherein the capacitance values of the first filter capacitor and the second filter capacitor are both 95-105 PF.
6. The 9x07 platform-based low frequency filter circuit according to claim 5, wherein the capacitance value of the first filter capacitor and the second filter capacitor is 100 PF.
7. The 9x07 platform-based low frequency filtering circuit of any one of claims 1-6, wherein the power supply pin is a Vbatt _ BB port of the 9x07 platform.
8. A wireless communication chip module, comprising the low frequency filter circuit based on the 9x07 platform as claimed in any one of claims 1-7.
9. A wireless antenna system, characterized in that it comprises a low-frequency filtering circuit based on the 9x07 platform according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457255.2A CN112543034A (en) | 2020-12-10 | 2020-12-10 | Low-frequency filter circuit, communication chip module and antenna system based on 9x07 platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457255.2A CN112543034A (en) | 2020-12-10 | 2020-12-10 | Low-frequency filter circuit, communication chip module and antenna system based on 9x07 platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112543034A true CN112543034A (en) | 2021-03-23 |
Family
ID=75018471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011457255.2A Pending CN112543034A (en) | 2020-12-10 | 2020-12-10 | Low-frequency filter circuit, communication chip module and antenna system based on 9x07 platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112543034A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181216B1 (en) * | 1999-07-19 | 2001-01-30 | General Instrument Corporation | Low phase-noise voltage controlled oscillator |
| CN102916571A (en) * | 2012-09-29 | 2013-02-06 | 西安空间无线电技术研究所 | Power supply capable of suppressing low-frequency noises |
| CN103971147A (en) * | 2014-05-23 | 2014-08-06 | 中山达华智能科技股份有限公司 | Ultra-high frequency RFID (Radio Frequency Identification) read-write module |
| CN104483685A (en) * | 2014-11-17 | 2015-04-01 | 江苏博纳雨田通信电子有限公司 | Anti-4G (fourth generation)-interference Beidou GPS (global positioning system) multi-mode receiving-dispatching integration navigation communication module |
| CN105721002A (en) * | 2016-04-15 | 2016-06-29 | 努比亚技术有限公司 | Terminal filtering method, system and device and filtering terminal |
| CN205666754U (en) * | 2016-06-08 | 2016-10-26 | 北京经纬恒润科技有限公司 | Switch power supply circuit |
-
2020
- 2020-12-10 CN CN202011457255.2A patent/CN112543034A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181216B1 (en) * | 1999-07-19 | 2001-01-30 | General Instrument Corporation | Low phase-noise voltage controlled oscillator |
| CN102916571A (en) * | 2012-09-29 | 2013-02-06 | 西安空间无线电技术研究所 | Power supply capable of suppressing low-frequency noises |
| CN103971147A (en) * | 2014-05-23 | 2014-08-06 | 中山达华智能科技股份有限公司 | Ultra-high frequency RFID (Radio Frequency Identification) read-write module |
| CN104483685A (en) * | 2014-11-17 | 2015-04-01 | 江苏博纳雨田通信电子有限公司 | Anti-4G (fourth generation)-interference Beidou GPS (global positioning system) multi-mode receiving-dispatching integration navigation communication module |
| CN105721002A (en) * | 2016-04-15 | 2016-06-29 | 努比亚技术有限公司 | Terminal filtering method, system and device and filtering terminal |
| CN205666754U (en) * | 2016-06-08 | 2016-10-26 | 北京经纬恒润科技有限公司 | Switch power supply circuit |
Non-Patent Citations (2)
| Title |
|---|
| 周志敏，纪爱华: "《开关电源可靠性设计与测试》", 31 July 2020, 机械工业出版社 * |
| 王红军: "《电子元器件检测与维修从入门到精通》", 31 January 2017, 中国铁道出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106550073B (en) | Equipment component applied to mobile terminal and mobile terminal | |
| EP3864753B1 (en) | Tunable radio frequency circuit, control method and electronic device including the same | |
| US20100015933A1 (en) | Equalizer system for emitting a quas i-constant power output rf signal in a frequency band | |
| US20140071644A1 (en) | Apparatus for controlling resonance frequency of device subject to wireless power transmission interference and method thereof | |
| CN114040489B (en) | Method for determining power back-off, electronic device and computer readable storage medium | |
| US20190235571A1 (en) | Electronic device for reducing noise | |
| CN112448725A (en) | Antenna, electronic device and antenna control method | |
| CN112543034A (en) | Low-frequency filter circuit, communication chip module and antenna system based on 9x07 platform | |
| CN110061791B (en) | Electronic equipment receiving sensitivity testing method and system and storage medium | |
| KR20200092145A (en) | Electronic device and method for processing harmoni signal | |
| JP4131475B2 (en) | Electronic control unit | |
| CN112038770B (en) | Method and device for manufacturing dual-frequency antenna and computer equipment thereof | |
| JP2005075301A (en) | Information processor | |
| CN215835549U (en) | Signal transmission circuit and bluetooth headset | |
| JP4958410B2 (en) | Electronic module assembly | |
| CN214252585U (en) | GPS anti-jamming device and electronic equipment | |
| JP4103782B2 (en) | In-vehicle communication device | |
| CN114844522A (en) | Communication circuit, interference suppression method thereof and terminal equipment | |
| EP3333973B1 (en) | Mobile terminal | |
| CN220915278U (en) | Wireless device and terminal equipment | |
| KR101943973B1 (en) | Car having wireless charger and electromagnetic wave reduction apparatus for the same | |
| US20230091264A1 (en) | Proximity sensor for rf control | |
| CN218456423U (en) | Antenna detection system, vehicle-mounted antenna system, chip and vehicle | |
| CN105515537A (en) | Multi-frequency tunable low noise amplifier and multi-frequency tuning implementation method thereof | |
| US11362528B2 (en) | Mitigation of audible output in a charging circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210323 |
|
| WD01 | Invention patent application deemed withdrawn after publication |