CN202435392U - Radio frequency module and mobile communication terminal thereof - Google Patents
Radio frequency module and mobile communication terminal thereof Download PDFInfo
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- CN202435392U CN202435392U CN2011204974052U CN201120497405U CN202435392U CN 202435392 U CN202435392 U CN 202435392U CN 2011204974052 U CN2011204974052 U CN 2011204974052U CN 201120497405 U CN201120497405 U CN 201120497405U CN 202435392 U CN202435392 U CN 202435392U
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Abstract
The utility model discloses a radio frequency module and a mobile communication terminal thereof. The radio frequency module comprises a transceiver, a first one from the two switch, a second one from the two switch, a first power amplifier, a second power amplifier and an antenna, wherein the first terminal of the transceiver is the TD-SCDMA signal terminal for connecting the first moving terminal of the first one from the two switch; the second terminal of the transceiver is the GSM high-frequency signal terminal for connecting the second moving terminal of the first one from the two switch; the third terminal of the transceiver is the GSM low-frequency signal terminal for connecting the input terminal of the second power amplifier; the fixed terminal of the first one from the two switch is connected with the input terminal of the first power amplifier; the output terminal of the first power amplifier is connected with the first moving terminal of the second one from the two switch; the second terminal of the second power amplifier is connected with the second moving terminal of the second one from the two switch; and the fixed terminal of the second one from the two switch is connected with the antenna. Through the above mode, the radio frequency module and a mobile communication terminal thereof can optimize PCB design and improve the stability of the system.
Description
Technical field
The utility model relates to RF application, particularly relates to a kind of radio-frequency module and mobile communication terminal thereof.
Background technology
In the wireless communication system, RF front-end module is a critical component of realizing the radiofrequency signal wireless transmission in modern times.Power amplifier is as the core of RF front-end module, and its performance is the key factor of restriction whole system performance and technical merit.
For satisfying the requirement of user to portability and battery flying power, mobile communication terminal need possess the single wide-band radio frequency power amplifier of high linearity and low noise ability, but owing to receive the restriction of existing technology, mobile communication terminal is difficult to realize broadband.
Yet; The TD-SCDMA of main flow (Time Division-Synchronous Code Division Multiple Access in the market; TD SDMA) and GSM (Global System For Mobile Communications; Global system for mobile communications) bimodule mobile communication terminal the frequency range that can support also more and more, the power amplifier that needs is also more and more.And the increase of power amplifier directly causes PCB (Printed Circuit Board, printed circuit board (PCB)) complex design, the stability of a system to descend.
The utility model content
The technical problem that the utility model mainly solves provides a kind of radio-frequency module and mobile communication terminal thereof, can optimize the PCB design, improves the stability of a system simultaneously.
For solving the problems of the technologies described above; The technical scheme that the utility model embodiment adopts is: a kind of radio-frequency module is provided, comprises: transceiver, first either-or switch, second either-or switch, first power amplifier, second power amplifier and antenna; First end of transceiver is the TD-SCDMA signal end; First moved end that connects first either-or switch, second end of transceiver is a GSM high-frequency signal end, connects second moved end of first either-or switch; The 3rd end of transceiver is a GSM low frequency signal end, connects the input of second power amplifier; The not moved end of first either-or switch connects the input of first power amplifier; The output of first power amplifier connects first moved end of second either-or switch; The output of second power amplifier connects second moved end of second either-or switch; The not moved end of second either-or switch connects antenna.
Wherein, said first either-or switch and second either-or switch are single-pole double-throw switch (SPDT).
Wherein, TD-SCDMA signal end signal frequency range is 1710MHz～2025MHz.
Wherein, TD-SCDMA signal end signal frequency comprises TD1900 frequency range or TD2000 frequency range; GSM high-frequency signal end signal frequency comprises DCS frequency range or PCS frequency range; GSM low frequency signal end signal frequency comprises GSM900 frequency range or GS850 frequency range.
Wherein, the Insertion Loss of first either-or switch is less than or equal to 0.5dB.
For solving the problems of the technologies described above; Another technical scheme that the utility model embodiment adopts is: a kind of mobile communication terminal is provided, comprises: transceiver, first either-or switch, second either-or switch, first power amplifier, second power amplifier and antenna; First end of transceiver is the TD-SCDMA signal end; First moved end that connects first either-or switch, second end of transceiver is a GSM high-frequency signal end, connects second moved end of first either-or switch; The 3rd end of transceiver is a GSM low frequency signal end, connects the input of second power amplifier; The not moved end of first either-or switch connects the input of first power amplifier; The output of first power amplifier connects first moved end of second either-or switch; The output of second power amplifier connects second moved end of second either-or switch; The not moved end of second either-or switch connects antenna.
Wherein, said first either-or switch and second either-or switch are single-pole double-throw switch (SPDT).
Wherein, TD-SCDMA signal end signal frequency range is 1710MHz～2025MHz.
Wherein, TD-SCDMA signal end signal frequency comprises TD1900 frequency range or TD2000 frequency range; GSM high-frequency signal end signal frequency comprises DCS frequency range or PCS frequency range; GSM low frequency signal end signal frequency comprises GSM900 frequency range or GS850 frequency range.
Wherein, the Insertion Loss of first either-or switch is less than or equal to 0.5dB.
The beneficial effect of the utility model is: be different under two kinds of patterns of prior art TD-SCDMA/GSM; The independent PCB complex design of using power amplifier that radiofrequency signal is amplified and causing of the different frequency range needs that comprise separately; And be prone to cause the unsettled situation of system; The utility model utilizes TD-SCDMA signal end signal frequency and the approaching principle of GSM high-frequency signal end signal frequency, TD-SCDMA signal end signal frequency and power amplifier of GSM high-frequency signal end signal frequency sharing, and GSM low-frequency range radiofrequency signal is separately with a power amplifier; Can optimize the PCB design, improve the stability of a system simultaneously.
Description of drawings
Fig. 1 is the structured flowchart of the utility model radio-frequency module embodiment;
Fig. 2 is a sketch map between DCS power amplifier gain region.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
Consult Fig. 1, the utility model radio-frequency module embodiment comprises: transceiver 11, first either-or switch 12, second either-or switch 13, first power amplifier 14, second power amplifier 15 and antenna 16.
The not moved end 123 of first either-or switch 12 connects the input 141 of first power amplifier 14.
The output 142 of first power amplifier 14 connects first moved end 131 of second either-or switch 13.
The output 152 of second power amplifier 15 connects second moved end 132 of second either-or switch.
The not moved end 133 of second either-or switch 13 connects antenna 16.
Should be noted that either-or switch can be a single-pole double-throw switch (SPDT) in the present embodiment, or the either-or switch of other types.
The utility model embodiment operation principle is following:
In fact the employed frequency range of each communication standard can be divided into two broad frequency ranges to contain all standards, promptly is divided into these two frequency ranges of low-frequency range 824MHz～915Mhz and high band 1710MHz～2025MHz.
TD-SCDMA comprises two frequency range: TD1900 and TD2000, and the signal frequency range of TD1900 is 1880MHz～1900MHz, and the signal frequency range of TD2000 is 2010MHz～2025MHz.Therefore, TD-SCDMA signal end signal frequency range is to be within high band 1710MHz～2025MHz.
GSM comprises a plurality of frequency ranges: GSM850/GSM900, DCS (Digital Cellular System; Digital Cellular System) and PCS (Personal Communications Service; The person-to-person communication service); The signal frequency range of GSM850/GSM900 is 824MHz～915MHz, and the signal frequency range of DCS is 1710MHz～1785MHz, and the signal frequency range of PCS is 1850MHz～1910MHz.Low-frequency range and high band range by above-mentioned classification obtains can be released, and GSM850/GSM900 is within low-frequency range 824MHz～915Mhz scope, and DCS and PCS are within high band 1710MHz～2025MHz scope.
Can know that by above-mentioned classification TD-SCDMA signal end signal frequency and GSM high-frequency signal end signal frequency can be unified to divide as high band 1710MHz～2025MHz to frequency range.GSM low frequency signal end signal frequency is then divided as low-frequency range 824MHz～915Mhz.
Consult Fig. 2; Fig. 2 has described between the power amplifier gain region of DCS; The peak power output at 3GPP (The 3rd Generation Partnership Project, third generation partner program) code requirement TD-SCDMA terminal be 24dBm (+1/-3dBm), the peak power output that shows the TD-SCDMA terminal is in 21dBm～25dBm scope; Can learn by Fig. 2; Linear zone between the power amplifier gain region of DCS, its peak power output is not less than 27dBm, and promptly the power output of DCS satisfies the peak power output requirement of TD-SCDMA.
And, learn that by the TD-SCDMA Principle of Communication power amplifier of TD-SCDMA requires to present linear amplification, and Fig. 2 can find out, the DCS of GSM high-frequency signal end also presents linear amplification.Can know that the linear zone between the power amplifier gain region of DCS can satisfy the requirement of TD-SCDMA power amplifier, show that promptly the DCS power amplifier can amplify as the signal of TD-SCDMA.
To sum up, can draw, DCS and TD-SCDMA can shared first power amplifiers 14.Because the signal frequency range of PCS is between the signal frequency range of included TD1900 of DCS and TD-SCDMA and TD2000; And; Therefore PCS is within the amplification bandwidth of first power amplifier 14, and 14 couples of PCS of first power amplifier also have enlarging function, so PCS and TD-SCDMA also can shared first power amplifiers 14; Its principle and DCS and TD-SCDMA are can shared first power amplifier 14 identical, give unnecessary details no longer one by one here.
In real work:
First either-or switch 12 is connected first moved end 121 and moved end 123 not, and first moved end 131 of second either-or switch 13 is when connecting not moved end 133, the work of TD-SCDMA signal end;
First either-or switch 12 is connected second moved end 122 and moved end 123 not, and first moved end 131 of second either-or switch 13 is when connecting not moved end 133, the work of GSM high-frequency signal end, i.e. DCS or PCS work;
When second moved end 132 of second either-or switch 13 connects not moved end 133, the work of GSM low frequency signal end, i.e. GSM850 or GSM900 work.
The utility model embodiment; Utilize TD-SCDMA signal end signal frequency and the approaching principle of GSM high-frequency signal end signal frequency; TD-SCDMA signal end signal frequency and GSM high-frequency signal end signal frequency are through first either-or switch, 12 common first power amplifiers 14 that use, and GSM low-frequency range radiofrequency signal is used second power amplifier 15 separately, can save amplifirer; When practicing thrift cost; Can also conserve space, wiring easily, thereby optimize the PCB design, and can improve the stability of a system.
In another embodiment, the Insertion Loss of first either-or switch 12 is less than or equal to 0.5dB, has enough peak power output surpluses to guarantee first power amplifier 14, improves the amplifying power to GSM signal and TD-SCDMA signal.
The utility model also provides a kind of mobile communication terminal embodiment.
This mobile communication terminal embodiment comprises the described content of above-mentioned radio-frequency module embodiment, gives unnecessary details no longer one by one here.
Among above-mentioned each embodiment, through the standing-wave ratio of vector analysis instrument test first power amplifier, at high band, i.e. 1710MHz～2025MHz, even in 1700MHz～2050MHz frequency range, its standing-wave ratio can satisfy instructions for use all greater than 6: 1.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (10)
1. a radio-frequency module is characterized in that, comprising:
Transceiver, first either-or switch, second either-or switch, first power amplifier, second power amplifier and antenna;
First end of said transceiver is the TD-SCDMA signal end; First moved end that connects said first either-or switch; Second end of said transceiver is a GSM high-frequency signal end; Second moved end that connects said first either-or switch, the 3rd end of said transceiver is a GSM low frequency signal end, connects the input of said second power amplifier;
The not moved end of said first either-or switch connects the input of said first power amplifier;
The output of said first power amplifier connects first moved end of said second either-or switch;
The output of said second power amplifier connects second moved end of said second either-or switch;
The not moved end of said second either-or switch connects said antenna.
2. radio-frequency module according to claim 1 is characterized in that, said first either-or switch and second either-or switch are single-pole double-throw switch (SPDT).
3. radio-frequency module according to claim 1 is characterized in that, said TD-SCDMA signal end signal frequency range is 1710MHz～2025MHz.
4. radio-frequency module according to claim 1 is characterized in that,
Said TD-SCDMA signal end signal frequency comprises TD1900 frequency range or TD2000 frequency range;
Said GSM high-frequency signal end signal frequency comprises DCS frequency range or PCS frequency range;
Said GSM low frequency signal end signal frequency comprises GSM900 frequency range or GS850 frequency range.
5. radio-frequency module according to claim 1 is characterized in that the Insertion Loss of said first either-or switch is less than or equal to 0.5dB.
6. a mobile communication terminal is characterized in that, comprising:
Transceiver, first either-or switch, second either-or switch, first power amplifier, second power amplifier and antenna;
First end of said transceiver is the TD-SCDMA signal end; First moved end that connects said first either-or switch; Second end of said transceiver is a GSM high-frequency signal end; Second moved end that connects said first either-or switch, the 3rd end of said transceiver is a GSM low frequency signal end, connects the input of said second power amplifier;
The not moved end of said first either-or switch connects the input of said first power amplifier;
The output of said first power amplifier connects first moved end of said second either-or switch;
The output of said second power amplifier connects second moved end of said second either-or switch;
The not moved end of said second either-or switch connects said antenna.
7. mobile communication terminal according to claim 6 is characterized in that, said first either-or switch and second either-or switch are single-pole double-throw switch (SPDT).
8. mobile communication terminal according to claim 6 is characterized in that, said TD-SCDMA signal end signal frequency range is 1710MHz～2025MHz.
9. mobile communication terminal according to claim 6 is characterized in that,
Said TD-SCDMA signal end signal frequency comprises TD1900 frequency range or TD2000 frequency range;
Said GSM high-frequency signal end signal frequency comprises DCS frequency range or PCS frequency range;
Said GSM low frequency signal end signal frequency comprises GSM900 frequency range or GS850 frequency range.
10. mobile communication terminal according to claim 6 is characterized in that the Insertion Loss of said first either-or switch is less than or equal to 0.5dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204974052U CN202435392U (en) | 2011-12-02 | 2011-12-02 | Radio frequency module and mobile communication terminal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204974052U CN202435392U (en) | 2011-12-02 | 2011-12-02 | Radio frequency module and mobile communication terminal thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435392U true CN202435392U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204974052U Expired - Fee Related CN202435392U (en) | 2011-12-02 | 2011-12-02 | Radio frequency module and mobile communication terminal thereof |
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| CN (1) | CN202435392U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286417A (en) * | 2017-07-21 | 2019-01-29 | 株式会社村田制作所 | Communication unit |
| CN112769445A (en) * | 2020-12-31 | 2021-05-07 | 维沃移动通信有限公司 | Radio frequency circuit, signal transmitting method and electronic equipment |
| CN112886987A (en) * | 2021-03-30 | 2021-06-01 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN113225092A (en) * | 2021-04-14 | 2021-08-06 | 荣耀终端有限公司 | Radio frequency amplifying circuit and method |
-
2011
- 2011-12-02 CN CN2011204974052U patent/CN202435392U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286417A (en) * | 2017-07-21 | 2019-01-29 | 株式会社村田制作所 | Communication unit |
| CN109286417B (en) * | 2017-07-21 | 2020-10-02 | 株式会社村田制作所 | Communication unit |
| CN112769445A (en) * | 2020-12-31 | 2021-05-07 | 维沃移动通信有限公司 | Radio frequency circuit, signal transmitting method and electronic equipment |
| CN112886987A (en) * | 2021-03-30 | 2021-06-01 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN113225092A (en) * | 2021-04-14 | 2021-08-06 | 荣耀终端有限公司 | Radio frequency amplifying circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20141202 |
|
| EXPY | Termination of patent right or utility model |