CN201639636U - Double frequency-supporting handset mainboard - Google Patents
Double frequency-supporting handset mainboard Download PDFInfo
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- CN201639636U CN201639636U CN2010201164006U CN201020116400U CN201639636U CN 201639636 U CN201639636 U CN 201639636U CN 2010201164006 U CN2010201164006 U CN 2010201164006U CN 201020116400 U CN201020116400 U CN 201020116400U CN 201639636 U CN201639636 U CN 201639636U
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- 230000001413 cellular effect Effects 0.000 claims description 14
- 238000005538 encapsulation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a double frequency-supporting handset mainboard, which comprises a transmitting circuit and a receiving circuit which are based on a QSC (Qualcomm Single-Chip) chip, and a PCB (Printed circuit board) board provided with the transmitting circuit and the receiving circuit, wherein the transmitting circuit and the receiving circuit share a duplexer and an antenna; the transmitting circuit comprises a first path selection module, a first matching network module, a transmitting filter, a power amplifier and a second matching network module which are connected between the transmitter pin of the QSC chip and the duplexer in sequence; the receiving circuit comprises a second path selection module, a third matching network module, a receiving filter and a fourth matching network module, and the second path selection module, the third matching network module, the receiving filter and the fourth matching network module are connected between the transmitter pin of the QSC chip and the duplexer in sequence. The utility model can greatly reduce design cost and simultaneously also effectively utilizes the space of the PCB board.
Description
Technical field
The utility model relates to a kind of cell phone mainboard, especially a kind of cell phone mainboard of supporting double frequency.
Background technology
In recent years, the CDMA mobile phone is because its radiation is little, and the speech quality height is difficult for the welcome that advantage such as call drop more and more is subjected to people.
When design CDMA single-frequency mobile phone, different country or the different employed radio bands of operator are different, and the customer requirement that has is supported Cellular frequency range (being the 800M frequency range), and the client who has then requires to support PCS frequency range (being the 1900M frequency range).For the demand of these two kinds of frequency ranges, the mobile phone circuit of baseband portion does not have difference basically, but the reception of radio frequency part and radiating circuit is widely different.
At the different requirements of RF circuit, the following two kinds of designs of the general employing of Chevron Research Company (CRC) at present:
One,, satisfies different clients' demand at the different different pcb boards of frequency range design;
Two, on same pcb board, design the reception and the emission path of Cellular and two frequency ranges of PCS simultaneously, and then select to use wherein path according to client's demand.
First kind of scheme designs targetedly, but will design two kinds of pcb boards at two kinds of different frequency range demands, and design cost is higher; Second kind of scheme uses same pcb board to satisfy the demand of two kinds of frequency ranges, saved a part of design cost, but owing to designed the also path of obsolete that frequency range, wasted the PCB space to a certain extent, the PCB space of mobile phone is very limited, will influence the cabling of RF circuit like this.
Therefore, need the double frequency support issue of a kind of cell phone mainboard of new support double frequency with better solution mobile phone.
Summary of the invention
In view of this, the utility model is devoted to better to solve the double frequency support issue of mobile phone, has proposed a kind of cell phone mainboard of supporting double frequency.
According to the utility model, provide a kind of cell phone mainboard of supporting double frequency.This cell phone mainboard comprises based on the radiating circuit of QSC chip and receiving circuit and the pcb board that this radiating circuit and receiving circuit are set, wherein:
Shared duplexer of described radiating circuit and receiving circuit (Duplexer) and antenna (ANT);
Described radiating circuit comprises first path selection module, the first matching network module (MN-1), emission filter (TX_BPF), the power amplifier (PA) and the second matching network module (MN-2) and is linked in sequence between the transmitter pin and duplexer of QSC chip;
Described receiving circuit comprises alternate path selection module, the 3rd matching network module (MN-3), receiving filter (RX_BPF) and the 4th matching network module (MN-4) and is linked in sequence between the receiver pin and duplexer of QSC chip.
Above-mentioned power amplifier (PA) can select module and two power amplifiers (PA1 and PA2) to substitute by the 3rd path.
Above-mentioned first path selects module to comprise Zero-ohm resistor (R1 and/or R2), and R1 or R2 one end are connected to the first matching network module (MN-1), and the other end is connected to the transmitter pin (PCS_OUT or CELL_OUT) of QSC chip; And/or
Above-mentioned alternate path selects module to comprise Zero-ohm resistor (R3 and/or R4), and R3 or R4 one end are connected to the 3rd matching network module (MN-3), and the other end is connected to the receiver pin (PCS_IN or CELL_IN) of QSC chip.
Above-mentioned the 3rd path selects module to comprise Zero-ohm resistor (R5 and/or R6), and R5 or R6 one end are connected to emission filter (TX_BPF), and the other end is connected to power amplifier (PA1 or PA2).
The beneficial effects of the utility model are:
The utility model adopts a kind of brand-new mode, uses a RF path to satisfy the demand of two kinds of frequency ranges on a pcb board.Not only can reduce design cost greatly, also realize effective utilization simultaneously the pcb board space.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present utility model is described in detail, wherein:
Fig. 1 is the first example structure figure of the present utility model; And
Fig. 2 is the second example structure figure of the present utility model;
Wherein, QSC: the QSC series CDMA integrated chip of representing high pass;
The transmitter pin of PCS frequency range in the PCS_OUT:QSC chip;
The transmitter pin of Cellular frequency range in the CELL_OUT:QSC chip;
The receiver pin of PCS frequency range in the PCS_IN:QSC chip;
The receiver pin of Cellular frequency range in the CELL_IN:QSC chip;
R1, R2, R3, R4, R5, R6: Zero-ohm resistor;
MN (1-4): Matching Network, the matching network of RF transmitter and receiver;
TX_BPF:Cellular frequency range or PCS band transmit machine filter;
RX_BPF:Cellular frequency range or PCS frequency range filter for receiver;
PA:Cellular frequency range or PCS frequency range radio-frequency power amplifier;
PA1, PA2:Cellular frequency range/PCS frequency range radio-frequency power amplifier;
Duplexer:Cellular frequency range or PCS frequency range duplexer;
ANT:Cellular frequency range or PCS band antenna.
Embodiment
In order to solve the double frequency support issue of mobile phone, the utility model provides cell phone mainboard and the mobile phone of supporting double frequency.Next specify this cell phone mainboard.
Fig. 1 illustrates the first example structure figure of the present utility model.As shown in Figure 1, this cell phone mainboard or the mobile phone that comprises this mainboard comprise based on the radiating circuit and the receiving circuit of QSC chip and the pcb board of this radiating circuit and receiving circuit are set.Wherein:
Shared duplexer of radiating circuit and receiving circuit (Duplexer) and antenna (ANT).
Radiating circuit comprises first path selection module, the first matching network module (MN-1), emission filter (TX_BPF), the power amplifier (PA) and the second matching network module (MN-2) and is linked in sequence between the transmitter pin and duplexer of QSC chip.
Receiving circuit comprises alternate path selection module, the 3rd matching network module (MN-3), receiving filter (RX_BPF) and the 4th matching network module (MN-4) and is linked in sequence between the receiver pin and duplexer of QSC chip.
Above-mentioned first path selects module to comprise Zero-ohm resistor (R1 and/or R2), and R1 or R2 one end are connected to the first matching network module (MN-1), and the other end is connected to the transmitter pin (PCS_OUT or CELL_OUT) of QSC chip; And/or
Above-mentioned alternate path selects module to comprise Zero-ohm resistor (R3 and/or R4), and R3 or R4 one end are connected to the 3rd matching network module (MN-3), and the other end is connected to the receiver pin (PCS_IN or CELL_IN) of QSC chip.
Above-mentioned emission filter (TX_BPF), receiving filter (RX_BPF) and duplexer (Duplexer) are for supporting Cellular frequency range or PCS frequency range type.
Above-mentioned emission filter (TX_BPF), receiving filter (RX_BPF) and duplexer (Duplexer) are the pin compatibility type.
As seen from the above, in design during pcb board, the pin that transmits and receives of two frequency ranges is all extracted, be connected on the pin of a Zero-ohm resistor, this Zero-ohm resistor is used for selecting frequency range.If do not use certain frequency range, just do not paste the Zero-ohm resistor on this frequency range path, only paste that Zero-ohm resistor on the required frequency range path.
When design pcb board pad, all use identical PCB encapsulation at two kinds of components and parts such as the pairing matching network circuit of frequency range, transmitter filter, filter for receiver, power amplifier and duplexer, when concrete mobile phones design, only need select corresponding components and parts both can to the requirement of frequency range according to different clients.
The matching network module needs the engineer to debug according to selected frequency range and components and parts; In addition, for the selection of components and parts, filter and duplexer at different frequency range that same producer or different manufacturers are produced all are pin compatibilities generally, i.e. their PCB encapsulation is the same, so can be general on same pcb board.
For PA, can the base pin selection compatibility, but consider from widening the PA supply channel, also can adopt non-pin compatibility PA, so just need reference example two.
Fig. 2 illustrates the second example structure figure of the present utility model.As shown in Figure 2, this cell phone mainboard or the mobile phone that comprises this mainboard comprise based on the radiating circuit and the receiving circuit of QSC chip and the pcb board of this radiating circuit and receiving circuit are set.Wherein:
Shared duplexer of radiating circuit and receiving circuit (Duplexer) and antenna (ANT).
Radiating circuit comprises first path selection module, the first matching network module (MN-1), emission filter (TX_BPF), the 3rd path selection module, two power amplifiers (PA1 and PA2) and the second matching network module (MN-2) and is linked in sequence between the transmitter pin and duplexer of QSC chip.
Receiving circuit comprises alternate path selection module, the 3rd matching network module (MN-3), receiving filter (RX_BPF) and the 4th matching network module (MN-4) and is linked in sequence between the receiver pin and duplexer of QSC chip.
Above-mentioned the 3rd path selects module to comprise Zero-ohm resistor (R5 and/or R6), and R5 or R6 one end are connected to emission filter (TX_BPF), and the other end is connected to power amplifier (PA1 or PA2).
Above-mentioned first path selects module to comprise Zero-ohm resistor (R1 and/or R2), and R1 or R2 one end are connected to the first matching network module (MN-1), and the other end is connected to the transmitter pin (PCS_OUT or CELL_OUT) of QSC chip; And/or
Above-mentioned alternate path selects module to comprise Zero-ohm resistor (R3 and/or R4), and R3 or R4 one end are connected to the 3rd matching network module (MN-3), and the other end is connected to the receiver pin (PCS_IN or CELL_IN) of QSC chip.
Above-mentioned emission filter (TX_BPF), receiving filter (RX_BPF) and duplexer (Duplexer) are for supporting Cellular frequency range or PCS frequency range type.
As seen from the above, embodiment two be on the basis of embodiment one under at the supply channel situation of widening PA adopt.
Select the PA of corresponding frequency band by Zero-ohm resistor, and matching network, filter and duplexer all adopt the encapsulation of the pin compatibility of corresponding frequency band, use identical PCB pad.
In embodiment two, owing to reserved the position of two PA, waste the PCB space of a PA to a certain extent, but still saved many other spaces on the whole, such as filter, the space of duplexer and matching network.
In sum, the utility model is finished design to two kinds of frequency range paths by selecting the components and parts at the encapsulation compatibility of Cellular and PCS frequency range, be implemented in only to use on the same pcb board path.The designer only need select the components and parts (such as filter, power amplifier, duplexer etc.) of corresponding frequency band according to different requirements of customers, and it is just passable to finely tune the RF matching network then.So not only can save the design cost of PCB, also make full use of the space of PCB.
More than specific descriptions of the present utility model are intended to illustrate the implementation of specific embodiments can not be interpreted as it is to restriction of the present utility model.Those of ordinary skills can make various variants on the basis of the embodiment that describes in detail under instruction of the present utility model, these variants all should be included within the design of the present utility model.The utility model scope required for protection is only limited by described claims.
Claims (6)
1. cell phone mainboard of supporting double frequency is characterized in that:
Described cell phone mainboard comprises based on the radiating circuit of baseband chip and receiving circuit and the pcb board that this radiating circuit and receiving circuit are set, wherein:
Shared duplexer of described radiating circuit and receiving circuit (Duplexer) and antenna (ANT);
Described radiating circuit comprises first path selection module, the first matching network module (MN-1), emission filter (TX_BPF), the power amplifier (PA) and the second matching network module (MN-2) and is linked in sequence between the transmitter pin and duplexer of QSC chip;
Described receiving circuit comprises alternate path selection module, the 3rd matching network module (MN-3), receiving filter (RX_BPF) and the 4th matching network module (MN-4) and is linked in sequence between the receiver pin and duplexer of QSC chip.
2. cell phone mainboard as claimed in claim 1 is characterized in that,
Described power amplifier (PA) can select module and two power amplifiers (PA1 and PA2) to substitute by the 3rd path.
3. cell phone mainboard as claimed in claim 1 or 2 is characterized in that:
Described first path selects module to comprise at least one Zero-ohm resistor (R1 and/or R2), described Zero-ohm resistor (R1 and/or R2) end is connected to the first matching network module (MN-1), and the other end is connected to the transmitter pin (PCS_OUT or CELL_OUT) of QSC chip; And/or
Described alternate path selects module to comprise Zero-ohm resistor (R3 and/or R4), and (R3 and/or R4) end is connected to the 3rd matching network module (MN-3), and the other end is connected to the receiver pin (PCS_IN or CELL_IN) of QSC chip.
4. cell phone mainboard as claimed in claim 3 is characterized in that:
Described the 3rd path selects module to comprise Zero-ohm resistor (R5 and/or R6), and R5 or R6 one end are connected to emission filter (TX_BPF), and the other end is connected to power amplifier (PA1 or PA2).
5. as claim 1 or 2 or 4 described cell phone mainboards, it is characterized in that:
Described emission filter (TX_BPF), receiving filter (RX_BPF) and duplexer (Duplexer) are for supporting Cellular frequency range or PCS frequency range type.
6. cell phone mainboard as claimed in claim 5 is characterized in that:
Described emission filter (TX_BPF), receiving filter (RX_BPF) and duplexer (Duplexer) are the pin compatibility type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201164006U CN201639636U (en) | 2010-02-10 | 2010-02-10 | Double frequency-supporting handset mainboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201164006U CN201639636U (en) | 2010-02-10 | 2010-02-10 | Double frequency-supporting handset mainboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201639636U true CN201639636U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201164006U Expired - Fee Related CN201639636U (en) | 2010-02-10 | 2010-02-10 | Double frequency-supporting handset mainboard |
Country Status (1)
| Country | Link |
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| CN (1) | CN201639636U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412861A (en) * | 2011-11-23 | 2012-04-11 | 惠州Tcl移动通信有限公司 | Emitting filter and mobile terminal |
| CN108832959A (en) * | 2018-08-29 | 2018-11-16 | Oppo（重庆）智能科技有限公司 | Radio-frequency front-end mould group and electronic device |
-
2010
- 2010-02-10 CN CN2010201164006U patent/CN201639636U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412861A (en) * | 2011-11-23 | 2012-04-11 | 惠州Tcl移动通信有限公司 | Emitting filter and mobile terminal |
| CN108832959A (en) * | 2018-08-29 | 2018-11-16 | Oppo（重庆）智能科技有限公司 | Radio-frequency front-end mould group and electronic device |
| CN108832959B (en) * | 2018-08-29 | 2024-02-13 | Oppo（重庆）智能科技有限公司 | Radio frequency front end module and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20130210 |