CN102361438A - Method and device for improving drive capability of local oscillator - Google Patents
Method and device for improving drive capability of local oscillator Download PDFInfo
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- CN102361438A CN102361438A CN2011102412869A CN201110241286A CN102361438A CN 102361438 A CN102361438 A CN 102361438A CN 2011102412869 A CN2011102412869 A CN 2011102412869A CN 201110241286 A CN201110241286 A CN 201110241286A CN 102361438 A CN102361438 A CN 102361438A
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Abstract
The invention discloses a method and device for improving the drive capability of a local oscillator, relating to a local oscillator drive technology in the field of mobile communication. The method comprises the following steps of: selecting a local oscillator signal suitable for a current application scene from local oscillator signals output by a plurality of local oscillator sources; carrying out power amplification on the selected oscillator signal; dividing the local oscillator signal subjected to power amplification into a plurality of paths of equal-amplitude in-phase signals; and respectively providing the equal-amplitude in-phase signals for a plurality of frequency converters. By using the method, under the condition that a certain local oscillator signal is dynamically input, a plurality of paths of fixed local oscillator signals can be output and the level requirement of the frequency converter on the local oscillator drive can be met.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of method and relevant apparatus thereof that improves the local oscillator driving force.
Background technology
Along with the development of communication career, the increase of application of the multimode of product and product support carrier frequency number has become the main design object of present mechanics of communication, and the driving force of the local oscillator link that thereupon brings also need satisfy new application requirements.Use with the fusion of other communication standards for LTE (Long Time Evolution, Long Term Evolution) at present, in the circuit design of radio frequency hardware components, the switching of local oscillator and the shared design key point that becomes transceiver.To this problem; Traditional design makes the bill of material switching mode; Though aspect the transceiver cost, do not increase too much, caused the complexity of material list management, PCB (Printed Circuit Board; Printed circuit board (PCB)) increase of area and design complexities have reduced the flexibility that product uses.After the renewal, the local oscillator handover scheme of software arrangements is used in design, yet has only solved the problem that material list switches, the security risk problem that has but increased the design complexities of subsequent use local oscillator drive circuit and brought thereupon.
In the face of intense market competition, the application that requires to use software arrangements to realize different communication standards is switched, and the frequency conversion drive under completion local vibration source input signal size there are differences satisfies multichannel simultaneously and uses.Along with the lifting of designs ability, high integration has become a kind of trend, can not only improve the quality of product, reliability, and competitive advantage also provides powerful support for the hardware and software platform design simultaneously.In conjunction with the popularization of high integrated technology, need characteristics of demand to local oscillation circuit, solve the problem that occurs in the present transceiver local oscillator application.
Summary of the invention
The object of the present invention is to provide a kind of method and device that improves the local oscillator driving force, can better solve the frequency conversion drive problem of local vibration source input signal size under there are differences.
According to an aspect of the present invention, a kind of method of improving the local oscillator driving force provided by the invention comprises:
A) from the local oscillation signal of a plurality of local vibration sources output, select to be applicable to the local oscillation signal of current application scene;
B) selected local oscillation signal is carried out power amplification;
The local oscillation signal that C) will pass through power amplification is divided into the multiple signals of constant amplitude homophase, and offers a plurality of frequency converters respectively.
Said steps A) be specially:
According to the current application scene, utilize signal selection module that the local oscillation signal from a plurality of local vibration sources is selected.
Said step B) be specially:
Utilize power amplifier module that selected local oscillation signal is carried out dynamic saturation point control, obtain the local oscillation signal of the amplification of fixing output.
Carry out said step B) after, comprise that also harmonic wave improves step, be specially:
Utilize harmonic wave to suppress module, the local oscillation signal harmonic wave that will pass through power amplification carries out Filtering Processing.
Said step C) be specially:
Utilize the power division module that local oscillation signal is divided into the multiple signals of constant amplitude homophase, said power division module has a plurality of output ports, and said multiple signals offer frequency converter through a plurality of output ports.
According to application scenarios, said a plurality of output ports are connected corresponding frequency converter, the output port that does not connect frequency converter is via resistance-grounded system.
According to a further aspect in the invention, a kind of device that improves the local oscillator driving force provided by the invention comprises:
Signal selection module is used for selecting the local oscillation signal of selecting to be applicable to the current application scene from the local oscillation signal of a plurality of local vibration source outputs;
Power amplifier module is used for selected local oscillation signal is carried out power amplification;
The power division module is used for the local oscillation signal through power amplification is divided into the multiple signals of constant amplitude homophase, and offers a plurality of frequency converters respectively.
Said device also comprises:
Harmonic wave suppresses module, is used for the local oscillation signal harmonic wave through power amplification is carried out Filtering Processing.
Said power division module has a plurality of output ports that a plurality of output signals are provided to frequency converter.
Said a plurality of output port connects corresponding frequency converter, and the output port that does not connect frequency converter is via resistance-grounded system.
Compared with prior art, beneficial effect of the present invention is:
The present invention can export the stable frequency converter that satisfies and drive the multiple signals that require, and save PCB cost and device cost through improving the device integrated level, thereby improve the cost advantage and the product reliability of transceiver under local oscillation signal is dynamically imported.
Description of drawings
Fig. 1 is a kind of method flow diagram that improves the local oscillator driving force provided by the invention;
Fig. 2 is a kind of device block diagram that improves the local oscillator driving force provided by the invention;
Fig. 3 is the flow chart of the said device of customization Fig. 2 provided by the invention;
Fig. 4 is a kind of device block diagram that improves the local oscillator driving force that the embodiment of the invention provides;
Fig. 5 is the sketch map that the present invention that the embodiment of the invention provides is applied to the FDD system;
Fig. 6 is the sketch map that the present invention that the embodiment of the invention provides is applied to the TDD system.
Embodiment
, should be appreciated that following illustrated preferred embodiment only is used for explanation and explains the present invention, and be not used in qualification the present invention a preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing.
Fig. 1 has shown a kind of method flow diagram that improves the local oscillator driving force provided by the invention, and as shown in Figure 1, step comprises:
Step 101: the local oscillation signal of from the local oscillation signal of a plurality of local vibration source outputs, selecting to be applicable to the current application scene.Specifically, according to the current application scene, utilize signal selection module that the local oscillation signal from a plurality of local vibration sources is selected.
Step 102: selected local oscillation signal is carried out power amplification.Specifically, utilize power amplifier module that selected local oscillation signal is carried out dynamic saturation point control, obtain the local oscillation signal of the amplification of fixing output.
Step 103: the local oscillation signal that will pass through power amplification is divided into the multiple signals of constant amplitude homophase, and offers a plurality of frequency converters respectively.Specifically, utilize the power division module that local oscillation signal is divided into the multiple signals of constant amplitude homophase, said power division module has a plurality of output ports, and said multiple signals offer frequency converter through a plurality of output ports.According to application scenarios, said a plurality of output ports are connected corresponding frequency converter, the output port that does not connect frequency converter is via resistance-grounded system.
After carrying out above-mentioned steps 102, can also utilize harmonic wave to suppress module, the local oscillation signal harmonic wave that will pass through power amplification carries out Filtering Processing, and execution in step 103 then.
Fig. 2 has shown a kind of device block diagram that improves the local oscillator driving force provided by the invention, and as shown in Figure 2, device comprises:
Signal selection module is used for selecting to be applicable to from the local oscillation signal of a plurality of local vibration sources output the local oscillation signal of current application scene;
Power amplifier module is used for selected local oscillation signal is carried out power amplification;
The power division module is used for the local oscillation signal through power amplification is divided into the multiple signals of constant amplitude homophase, and offers a plurality of frequency converters respectively;
Harmonic wave suppresses module, is used for the local oscillation signal harmonic wave through power amplification is carried out Filtering Processing.
Above-mentioned power division module has a plurality of output ports that a plurality of output signals are provided to frequency converter, and said a plurality of output ports connect corresponding frequency converter, and the output port that does not connect frequency converter is via resistance-grounded system.
Fig. 3 has shown the flow chart of the said device of customization Fig. 2 provided by the invention; As shown in Figure 3; The quantity that drives for the scope of improving the local oscillator drive level and local oscillator, certain local oscillation signal dynamically input down, the local oscillation signal that output is fixed; Satisfy when level that frequency converter drives local oscillator requires and support n (n＞2) road local oscillator to drive fan-out capability, customize device according to the invention and need consider following steps:
Step 301: the quantitative requirement of local oscillator driving, the size requirements of drive level, the size requirements that harmonic wave suppresses are confirmed the performance index that device needs according to the invention satisfy according to GSM.
Step 302: the frequency range of considering different systems is used; With CDMA (Code Division Multiple Access; Code division multiple access), LTE, UMTS (Universal Mobile Telecommunications System; UMTS), GSM (Global System of Mobile communication; Global system for mobile communications) working frequency range is rationally divided, and can't support under the situation of communication full frequency band application difficult that in present technology segmentation covers as much as possible, realizes that the wideband of communication standard different frequency range covers.In other words; The working frequency range of communication field mainly covers the scope of 400MHz～4000MHz at present; Can be in practical application because cost; The restriction of size, technology etc. can't be satisfied so wide frequency range and cover, and therefore need carry out frequency partition according to present applicable cases, realizes that through the device more than 2 of pin compatibility the wideband section covers.
Step 303: the value volume and range of product according to used local vibration source in the transceiver application carries out confirming of signal input quantity.That is to say, confirm actual local vibration source quantity, drive processing thereby what local vibration sources clear and definite this device need carry out signal to according to application requirements.
Step 304: the local oscillator of confirming actual needs according to application requirements drives quantity, thereby clear and definite this device needs to support that the local oscillator on how many roads drives output.Local oscillator according to system's needs drives the suitable distribution of power module of quantity selection, uses resistors match ground connection for the part that does not temporarily require output.
Step 305: according to the level requirement of the driving of level scope and the output of the local vibration source of input, analyzing power amplifier module needs performance requirement.Because different local oscillators drives the power loss difference that quantity is introduced; Need adjust gain and the saturated output requirement that amplification module is confirmed in the back to the power loss of signal selection module and power division module; Requirement is exported each road signal constant amplitude homophase under given input unlike signal size condition.
Step 306: the performance that device needs to satisfy is confirmed, can realize promptly having feasibility if satisfy the device of above performance, and then execution in step 307, otherwise execution in step 301, to confirm the performance that device need satisfy again.That is to say after device performance was confirmed, whether the present designed capacity of needs assessment can realize the performance that requires, considered the complexity of implement device, was regulating balance back customizing device.
Step 307: customize device according to the invention.
Fig. 4 has shown a kind of device block diagram that improves the local oscillator driving force that the embodiment of the invention provides, and is as shown in Figure 4, and device comprises that signal selection module, power amplifier module, power division module harmonic suppress module.
Said signal selection module, the local oscillation signal of the varying level that is used for providing to different application scenes is selected;
Said power amplifier module is used for selected local oscillation signal is carried out processing and amplifying, the local oscillation signal input that the control through the work saturation point simultaneously realizes certain limit down the characteristics of fixing output to satisfy the requirement of frequency converter to drive level;
Said power division module is used for the local oscillation signal of processing and amplifying is divided into the n road signal output of constant amplitude homophase, makes the user select any one tunnel in n road or the output of a few road through outside matching mode according to actual needs;
Said harmonic wave suppresses module, through the mode of the external port of filter, can support external filters, improves design flexibility.
This device also comprises external interface, and said external interface comprises signal input port, signal output port, power supply port and control port.
Connect according to the integrated connected mode of radio frequency chip between each module of this device, in application, can use part of module flexibly separately, promptly can use, also can be used as power splitter and use as amplifier.
In the present embodiment; Local oscillation signal from two different local vibration sources inputs in the device through signal input port L0_IN1 and L0_IN2 respectively; Said signal selection module is according to the control signal from control port SWITCHCONTROL, and selection one tunnel is applicable to the local oscillation signal of current application scene from the two-way local oscillation signal.Said power amplifier module makes level local oscillation signal within the specific limits fixing through output level size after the power amplification, to satisfy the requirement of frequency converter to drive level through the control of work saturation point.Local oscillation signal after the process power amplification is sent to the power division module after carrying out the harmonic wave inhibition through harmonic wave inhibition module.The local oscillation signal that the power division module will be passed through the harmonic wave inhibition is divided into 8 road signals, and offers frequency converter through 8 signal output port L0_OUT1-L0_OUT8 respectively.
Harmonic wave suppresses the mode of module through the external port of filter, external low pass filter LPF in the present embodiment.
Fig. 5 has shown that the present invention that the embodiment of the invention provides is applied to the sketch map of FDD (Frequency Division Duplexing, FDD) system, and is as shown in Figure 5.There are following two kinds of application scenarioss in the FDD practical application:
First kind: two local vibration sources connect a device of the present invention respectively, realize that two groups of local oscillators drive.
Second kind: the said device of the application of the invention, realize selection from the local oscillation signal of different local vibration sources, realizes that a local vibration source supports two groups of local oscillators drivings simultaneously.
Furtherly, device 1 receives the local oscillation signal from local vibration source 1 through its signal input port L0_IN1; Device 2 passes through the local oscillation signal of its signal input port L0_IN1 reception sources from local vibration source 1, and receives the local oscillation signal from local vibration source 2 through its signal input port L0_IN2.Under first kind of application scenarios, make device 2 select to realize from the local oscillation signal of local vibration source 2; Under second kind of application scenarios, the local oscillation signal that makes device 2 select to be derived from local vibration source 1 can be realized.Two kinds of application scenarioss do not change the hardware designs of FDD system, only get final product through software arrangements.
In the application; Realized that through using the device of being invented the multichannel local oscillator drives output; Realize the selection of different local vibration sources simultaneously; Level differences for the local oscillation signal of two local vibration sources is (10～0) dBm, uses the big dynamically input of this device characteristics of fixing output down, can satisfy stable 5dBm signal level output requirement.
Device is supported the output of n (n＞2) road at present, can carry out bypass in the practical application as required and select any output less than the n road, can on the basis of this device, increase merit simultaneously and divide expansion output quantity.
In different system applies; Can use harmonic wave to suppress module flexibly and carry out link design to meet the demands; Promptly can carry out Filtering Processing to the local oscillation signal through power amplification as required, to suppress harmonic wave, the step of Filtering Processing can realize through the mode of external filters.
Fig. 6 has shown that the present invention that the embodiment of the invention provides is applied to the sketch map of TDD (Time Division Duplexing, time division duplex) system, and is as shown in Figure 6, the time sharing shared local vibration source of the receiver of TDD system and sender.Adopt this device, can realize that the multichannel local oscillator of multichannel transmitting and receiving system drives.In practical application; Because the local oscillation signal that device 2 receives has bigger cabling loss through behind the holding wire; Utilize the big dynamically input of this device characteristics of fixing output down; Can realize the requirement that frequency converter 0dBm local oscillator drives, in different system applies, can use harmonic wave to suppress module flexibly and carry out link design simultaneously to meet the demands.
In sum, the present invention has following technique effect:
1, the present invention can export the stable frequency converter that satisfies and drive the multiple signals that require under local oscillation signal is dynamically imported.
When 2, the present invention has improved the device integrated level through integrated technology, save PCB cost and device cost, reduced the complexity that designs, improved the cost advantage of transceiver to a certain extent, promoted reliability of products.
Although preceding text specify the present invention, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention all are to be understood that to falling into protection scope of the present invention.
Claims (10)
1. a method of improving the local oscillator driving force is characterized in that, comprising:
A) from the local oscillation signal of a plurality of local vibration sources output, select to be applicable to the local oscillation signal of current application scene;
B) selected local oscillation signal is carried out power amplification;
The local oscillation signal that C) will pass through power amplification is divided into the multiple signals of constant amplitude homophase, and offers a plurality of frequency converters respectively.
2. method according to claim 1 is characterized in that, said steps A) be specially:
According to the current application scene, utilize signal selection module that the local oscillation signal from a plurality of local vibration sources is selected.
3. method according to claim 1 is characterized in that, said step B) be specially:
Utilize power amplifier module that selected local oscillation signal is carried out dynamic saturation point control, obtain the local oscillation signal of the amplification of fixing output.
4. method according to claim 3 is characterized in that, carries out said step B) after, comprise that also harmonic wave improves step, be specially:
Utilize harmonic wave to suppress module, the local oscillation signal harmonic wave that will pass through power amplification carries out Filtering Processing.
5. according to any described method of claim 1-4, it is characterized in that said step C) be specially:
Utilize the power division module that local oscillation signal is divided into the multiple signals of constant amplitude homophase, said power division module has a plurality of output ports, and said multiple signals offer frequency converter through a plurality of output ports.
6. method according to claim 5 is characterized in that, according to application scenarios, said a plurality of output ports is connected corresponding frequency converter, and the output port that does not connect frequency converter is via resistance-grounded system.
7. a device that improves the local oscillator driving force is characterized in that, comprising:
Signal selection module is used for selecting to be applicable to from the local oscillation signal of a plurality of local vibration sources output the local oscillation signal of current application scene;
Power amplifier module is used for selected local oscillation signal is carried out power amplification;
The power division module is used for the local oscillation signal through power amplification is divided into the multiple signals of constant amplitude homophase, and offers a plurality of frequency converters respectively.
8. device according to claim 7 is characterized in that, also comprises:
Harmonic wave suppresses module, is used for the local oscillation signal harmonic wave through power amplification is carried out Filtering Processing.
9. according to claim 7 or 8 described devices, it is characterized in that said power division module has a plurality of output ports that a plurality of output signals are provided to frequency converter.
10. device according to claim 7 is characterized in that, said a plurality of output ports connect corresponding frequency converter, and the output port that does not connect frequency converter is via resistance-grounded system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241286.9A CN102361438B (en) | 2011-08-22 | 2011-08-22 | A kind of method and device for improving drive capability of local oscillator |
| PCT/CN2011/084668 WO2012152030A1 (en) | 2011-08-22 | 2011-12-26 | Method and device for handling local oscillation signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241286.9A CN102361438B (en) | 2011-08-22 | 2011-08-22 | A kind of method and device for improving drive capability of local oscillator |
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| CN102361438A true CN102361438A (en) | 2012-02-22 |
| CN102361438B CN102361438B (en) | 2017-05-31 |
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| CN201110241286.9A Active CN102361438B (en) | 2011-08-22 | 2011-08-22 | A kind of method and device for improving drive capability of local oscillator |
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| WO (1) | WO2012152030A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882474A (en) * | 2012-09-29 | 2013-01-16 | 西安空间无线电技术研究所 | Frequency mixer with high-order harmonic wave inhibiting ability and inhibiting method for high-order harmonic waves |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5548839A (en) * | 1994-10-14 | 1996-08-20 | Caldwell; Stephen P. | Wide band radio-frequency converter having multiple use of intermediate frequency translators |
| CN201114052Y (en) * | 2007-06-06 | 2008-09-10 | 安徽四创电子股份有限公司 | Ku double local oscillation multi-output system |
| CN101400094A (en) * | 2007-09-29 | 2009-04-01 | 大唐移动通信设备有限公司 | Radio-frequency information transceiving device and user equipment |
| US20090195336A1 (en) * | 2008-02-05 | 2009-08-06 | Cho-Chun Huang | Tunable voltage-controlled oscillator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7069048B2 (en) * | 2001-09-11 | 2006-06-27 | Samsung Electronics Co., Ltd. | Base station system supporting multi-sector/multi-frequency assignment for seamless call service |
| CN201830256U (en) * | 2010-06-24 | 2011-05-11 | 大唐移动通信设备有限公司 | Multi-channel receiver device |
-
2011
- 2011-08-22 CN CN201110241286.9A patent/CN102361438B/en active Active
- 2011-12-26 WO PCT/CN2011/084668 patent/WO2012152030A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5548839A (en) * | 1994-10-14 | 1996-08-20 | Caldwell; Stephen P. | Wide band radio-frequency converter having multiple use of intermediate frequency translators |
| CN201114052Y (en) * | 2007-06-06 | 2008-09-10 | 安徽四创电子股份有限公司 | Ku double local oscillation multi-output system |
| CN101400094A (en) * | 2007-09-29 | 2009-04-01 | 大唐移动通信设备有限公司 | Radio-frequency information transceiving device and user equipment |
| US20090195336A1 (en) * | 2008-02-05 | 2009-08-06 | Cho-Chun Huang | Tunable voltage-controlled oscillator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882474A (en) * | 2012-09-29 | 2013-01-16 | 西安空间无线电技术研究所 | Frequency mixer with high-order harmonic wave inhibiting ability and inhibiting method for high-order harmonic waves |
| CN102882474B (en) * | 2012-09-29 | 2016-01-13 | 西安空间无线电技术研究所 | A kind of frequency mixer and suppressing method thereof with high-order harmonic wave rejection ability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102361438B (en) | 2017-05-31 |
| WO2012152030A1 (en) | 2012-11-15 |
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