CN102594961A - Test system of mobile phone antenna - Google Patents
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- CN102594961A CN102594961A CN2012100495518A CN201210049551A CN102594961A CN 102594961 A CN102594961 A CN 102594961A CN 2012100495518 A CN2012100495518 A CN 2012100495518A CN 201210049551 A CN201210049551 A CN 201210049551A CN 102594961 A CN102594961 A CN 102594961A
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- 238000012360 testing method Methods 0.000 title claims abstract description 135
- 238000001228 spectrum Methods 0.000 claims abstract description 43
- 238000005259 measurement Methods 0.000 claims description 40
- 238000010183 spectrum analysis Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
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Abstract
The invention discloses a test system of a mobile phone antenna. The test system comprises a test rotary table, a loudspeaker antenna, an integrative tester, a frequency spectrum tester, a signal distributor, a radiofrequency signal attenuator, a data acquisition apparatus and a display. The test rotary table and the loudspeaker antenna are positioned in a microwave darkroom. The integrative tester, the frequency spectrum tester, the signal distributor, the radiofrequency signal attenuator, the data acquisition apparatus and the display are positioned outside the microwave darkroom. A mobile phone is placed on the test rotary table and is connected with the signal distributor. The loudspeaker antenna and the integrative tester are connected with the frequency spectrum tester. The integrative tester is connected with the display through the data collector, and is connected with the signal distributor through the radiofrequency signal attenuator. The signal distributor is connected with the frequency spectrum tester. According to the invention, through forming a set of closed loop test system with the loudspeaker antenna, the integrative tester, the frequency spectrum tester, the radiofrequency signal attenuator and the signal distributor, influence of signal attenuation and radiation on a test is reduced, and a test result is accurate.
Description
Technical field
The present invention relates to the measuring technology of antenna for mobile phone, particularly a kind of test macro of antenna for mobile phone.
Background technology
Antenna measurement is an indispensable link of guaranteeing that mobile phone radio frequency is stable; Reasonably the antenna for mobile phone testing apparatus can not only accurately test out the various parameters that influence antenna performance, and can improve the stability of performance, analyticity and the radio frequency of mobile phone radio frequency part.
As shown in Figure 1, it is the test system structure sketch map of existing antenna for mobile phone.As shown in the figure, it comprises mobile phone anchor clamps 101, test table 102, horn antenna 103, spectrum measurement appearance 104, comprehensive tester 105, data acquisition unit 106, display 107 and some switching devices (not marking among the figure).Said mobile phone anchor clamps 101 are installed on the test table 102, are used for fixing mobile phone to be measured, and said test table 102 is provided with turntable controller 108, be used to control turntable 360 degree and rotate, thereby the control mobile phone rotates.Spectrum measurement appearance 104 all is connected with horn antenna 103 with comprehensive tester 105; And spectrum measurement appearance 104 is placed on the comprehensive tester 105; Said comprehensive tester 105 also is connected with display 107 through data acquisition unit 106, is used for that the transfer of data that comprehensive tester 105 is analyzed is gone out display 107 and shows.
In above-mentioned antenna for mobile phone test macro, because the spectrum measurement appearance is placed directly on the comprehensive tester, make that the interference ratio between each equipment is more serious, influenced the test result of the relevant parameter of antenna.And in above-mentioned test macro, the distance between test table and the horn antenna is distant, makes that the RF p-wire between horn antenna and the comprehensive tester is long; Thereby can cause that signal attenuation and signal radiation disturb; Further influenced the test parameter of antenna for mobile phone,, then needed retest and improve mobile phone antenna match if test result and objective result are inconsistent; This makes testing efficiency low, but also can cause the testing equipment loss.Therefore, be necessary the test macro of antenna for mobile phone is improved.
Summary of the invention
In view of the weak point of above-mentioned prior art, the object of the present invention is to provide a kind of test macro of antenna for mobile phone, can reduce signal radiation unnecessary in the test process and disturb influence, thereby improve the accuracy of test antenna.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of test macro of antenna for mobile phone, it comprises:
Be used to control the test table that mobile phone rotates;
Be used to receive the horn antenna that mobile phone transmits;
The base station that is used for analogue mobile phone, the comprehensive tester that the signal that receives is analyzed;
Be used for the signal of mobile phone is carried out the spectrum measurement appearance of spectrum analysis;
Be used to adjust the signal of mobile phone, improve the signal distributor of signal quality;
The radiofrequency signal attenuator of high-intensity signal of antenna for mobile phone output is used to decay;
Be used to gather the data acquisition unit of the digital signal of comprehensive tester output;
Be used to show the display of test data;
Said test table and horn antenna are arranged in microwave dark room, and said comprehensive tester, spectrum measurement appearance, signal distributor, radiofrequency signal attenuator, data acquisition unit and display are positioned at outside the microwave dark room; Said mobile phone is placed on the test table; And be connected with signal distributor; Said horn antenna is connected with the spectrum measurement appearance with comprehensive tester; Said comprehensive tester is connected with display through data acquisition unit, and comprehensive tester also is connected with signal distributor through the radiofrequency signal attenuator, and said signal distributor is connected with the spectrum measurement appearance.
In the test macro of above-mentioned antenna for mobile phone, comprise also being used to control the turntable controller that test table rotates that said turntable controller is connected with said test table.
In the test macro of above-mentioned antenna for mobile phone, test table is provided with the anchor clamps that are used for fixing mobile phone.
In the test macro of above-mentioned antenna for mobile phone, when beginning to test, the antenna and the horn antenna of said mobile phone are opposed.
In the test macro of above-mentioned antenna for mobile phone, the line of said antenna for mobile phone and horn antenna upper edge and the angle between the horizontal plane are 30 °, and the line of said antenna for mobile phone and horn antenna lower edge and the angle between the horizontal plane are-30 °.
In the test macro of above-mentioned antenna for mobile phone, the air line distance between said test table and the horn antenna is 3-10m.
In the test macro of above-mentioned antenna for mobile phone, the air line distance between test table and the ground is 0.8-1.3m, and the air line distance between said horn antenna and the ground is 0.8-1.3m.
In the test macro of above-mentioned antenna for mobile phone, the air line distance between said comprehensive tester and the horn antenna is 2-10m, and the air line distance between spectrum measurement appearance and the horn antenna is 2-10m.
In the test macro of above-mentioned antenna for mobile phone, the air line distance between said comprehensive tester and the spectrum measurement appearance is 0.5-1m, and said comprehensive tester is positioned at the below of spectrum measurement appearance.
In the test macro of above-mentioned antenna for mobile phone, said horn antenna, test table, comprehensive tester and spectrum measurement appearance be ground connection respectively.
Compared to prior art, the test macro of antenna for mobile phone provided by the invention comprises test table, horn antenna, comprehensive tester, spectrum measurement appearance, signal distributor, radiofrequency signal attenuator, data acquisition unit and display; Said test table and horn antenna are arranged in microwave dark room, and said comprehensive tester, spectrum measurement appearance, signal distributor, radiofrequency signal attenuator, data acquisition unit and display are positioned at outside the microwave dark room; Said mobile phone is placed on the test table; And be connected with signal distributor; Said horn antenna is connected with the spectrum measurement appearance with comprehensive tester; Said comprehensive tester is connected with display through data acquisition unit, and comprehensive tester also is connected with signal distributor through the radiofrequency signal attenuator, and said signal distributor is connected with the spectrum measurement appearance.The present invention is through forming horn antenna, comprehensive tester, spectrum measurement appearance, radiofrequency signal attenuator and signal distributor the test macro of one cover closed loop; Reduced signal attenuation and radiation influence to test; Make test result accurate; And through data acquisition unit the analysis result of comprehensive tester is transferred to display and shows, draw the parameter of antenna, judge whether to need to improve antenna performance.In test macro, each equipment need not stack, and need not prolong the distance of connection yet; Greatly reduce the interference of signal attenuation and signal radiation; Further improved precision of test result, thereby, reduced equipment loss and testing cost pressure without the antenna parameter of retest mobile phone.
Description of drawings
Fig. 1 is existing antenna for mobile phone test system structure sketch map.
Fig. 2 is the structural representation of the test macro of antenna for mobile phone of the present invention.
Fig. 3 is the position distribution sketch map of each testing equipment in the test macro of antenna for mobile phone of the present invention.
Embodiment
The importance that test occupies in whole radio frequency part in view of antenna for mobile phone; Build a cover test macro with how holding water and become a very important link; Mobile phone test system can not only influence the performance of the design parameter and the antenna of antenna for mobile phone, and influence partly also is very important to whole mobile phone radio frequency.Testing cost based on existing antenna for mobile phone radio frequency part is bigger; The present invention provides a kind of test macro of antenna for mobile phone; Can reduce the peripheral components of antenna measurement device with holding water; Not only can alleviate the pressure of mobile phone test cost, and can reduce unnecessary signal radiation and disturb influence antenna.
For making the object of the invention, technical scheme and effect clearer, clear and definite, below develop simultaneously embodiment to further explain of the present invention with reference to accompanying drawing.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 2, the test macro of antenna for mobile phone provided by the invention comprises test table 110, horn antenna 120, comprehensive tester 130, spectrum measurement appearance 140, signal distributor 150, radiofrequency signal attenuator 160, data acquisition unit 170 and display 180.Said test table 110 is arranged in microwave dark room with horn antenna 120, and said comprehensive tester 130, spectrum measurement appearance 140, signal distributor 150, radiofrequency signal attenuator 160, data acquisition unit 170 and display 180 are positioned at outside the microwave dark room.
When test; Test frequency in the microwave dark room is 30MHZ～18GHZ; Wherein GSM (Global System for Mobile Communications, global system for mobile communications) test frequency is generally 900MHZ, DCS (Distributed Control System; Dcs) test frequency is generally 1800MHZ; PCS (Personal Communications Service, person-to-person communication service) test frequency is generally 1900MHZ, and the mobile phone in the 3G mobile band limits also can be tested at microwave dark room.The working temperature of test table is 15～30 ℃, and the power reguirements of power supply is 220V ± 20%, 50HZ ± 5%, and the ambient temperature of microwave dark room is 15～30 ℃.Under the general test condition; The diameter in the dead zone of microwave dark room is 2m; The microwave dark room dead zone is meant and receives ELECTROMAGNETIC REFLECTION to disturb the most weak zone in the microwave dark room; It is influenced by the absorption property of absorbing material in the microwave dark room, the radiated interference of the stube cable between each equipment etc., and the height of sorbing material needs about 30cm in microwave dark room.
In the embodiment of the invention; Mobile phone is placed on the test table 110, and is connected with signal distributor 150, the interference signal that said signal distributor 150 is used to adjust the signal relevant with mobile phone antenna performance, isolates miscellaneous equipment; Export the standard signal relevant, improve quality of signals with antenna.
Said horn antenna 120 is connected with spectrum measurement appearance 140 with comprehensive tester 130; Said comprehensive tester 130 is connected with display 180 through data acquisition unit 170; Comprehensive tester 130 also is connected with signal distributor 150 through radiofrequency signal attenuator 160, and said signal distributor 150 is connected with spectrum measurement appearance 140.
Wherein, Said horn antenna 120 is dual polarization horn antenna 120; Be used to receive the signal of mobile phone emission, comprehensive tester 130 is used for the base station of analogue mobile phone, and the aerial signal that receives is analyzed and calculated; Spectrum measurement appearance 140 is used for the signal of mobile phone is carried out spectrum analysis, judges the quality of handset capability intuitively.Said radiofrequency signal attenuator 160 be used to the to decay high-intensity signal of antenna for mobile phone output avoids radiation excessive, and its decay power generally is controlled at below the 3dBm.Data acquisition unit 170 is used to gather the digital signal of comprehensive tester 130 outputs; Export to display 180 in real time; Show corresponding test data through display 180; It also can be kept in the digital signal of comprehensive tester 130 outputs, when overabundance of data, alleviates the pressure of display 180.
The test macro of antenna for mobile phone provided by the invention comprises also and is used to control the turntable controller 190 that test table 110 rotates that said turntable controller 190 is connected with said test table 110.Turntable controller 190 is introduced electromagnetic interference through optical fiber control test table 110 when avoiding test macro work.Said turntable controller 190 controllable testing turntables 110 perhaps are rotated counterclockwise 360 ° clockwise, come the analog subscriber talking state, make horn antenna 120 can receive the signal of antenna for mobile phone all angles radiation.Wherein, the precision of the rotating shaft angle of test table 110 is ± 0.1 °, and the diameter of test table 110 rotation luck transition marks is 20～40cm, and its rotary speed is per second 1 degree.
Because mobile phone is when test, turntable need rotate different orientation to be tested, and drops in order to prevent mobile phone, and said test table 110 is provided with anchor clamps 200, and these anchor clamps 200 are used for fixing mobile phone, prevent that mobile phone from dropping.
When the performance of testing mobile phone antenna; Need be received fully by horn antenna 120 on the signal theory of antenna for mobile phone emission; Could test out antenna for mobile phone or bad fully, but in fact some signal has been disperseed by the absorption of the sorbing material around the microwave dark room in transmission course, disperses in transmission course in order to reduce signal; When beginning to test; The antenna of said mobile phone and horn antenna 120 are opposed, are preferably the center of the antenna part of mobile phone being aimed at horn antenna 120, thereby reduce the air line distance of signal transmission as far as possible.
Please consult Fig. 3 in the lump, because anchor clamps 200 are very thin, and antenna for mobile phone generally is installed on the back side of mobile phone, and the length of anchor clamps 200 is less than the length of mobile phone, makes mobile phone be fixed on 200 last times of anchor clamps, and antenna for mobile phone stretches out the anchor clamps outside.When test; The screen of mobile phone up; The center of antenna for mobile phone and horn antenna is on same horizontal line, and according to the thickness of dual polarization horn antenna, the line of said antenna for mobile phone and horn antenna upper edge and the angle theta between the horizontal plane 1 are 30 °; The line of said antenna for mobile phone and horn antenna lower edge and the angle between the horizontal plane are that θ 2 is-30 °; Make the signal of antenna for mobile phone emission received or to cover by horn antenna 120, in the specific implementation, angle can be confirmed according to the thickness of anchor clamps 200 between the upper and lower edge of mobile phone and horn antenna 120 and the horizontal plane.
For the loss of each apparatus output signal in the test macro that reduces antenna for mobile phone of the present invention, in the practical implementation process, the air line distance L1 between said test table 110 and the horn antenna 120 is 3-10m.Air line distance L2 between test table 110 and the ground is 0.8-1.3m; Air line distance L3 between said horn antenna 120 and the ground is 0.8-1.3m; And test table 110 is flushed with the center of horn antenna 120, reduce the coupling that when test, produces signal and noise between horn antenna 120 and the mobile phone.
Please continue to consult Fig. 3; The test macro of antenna for mobile phone provided by the invention; Air line distance L4 between said comprehensive tester 130 horn antennas 120 is 2-10m; Air line distance L5 between spectrum measurement appearance 140 and the horn antenna 120 is 2-10m, and horn antenna 120 is equated with air line distance between comprehensive tester 130 and the spectrum measurement appearance 140.Air line distance L6 between said comprehensive tester 130 and the spectrum measurement appearance 140 is 0.5-1m, and because comprehensive tester 130 needs to connect display 180, said comprehensive tester 130 is positioned at spectrum measurement appearance 140 belows.In the test macro of antenna for mobile phone provided by the invention; Can avoid the RF p-wire of each equipment room long according to above-mentioned putting position; Need can also reasonably select the peripheral test equipment of connection, thereby minimizing signal attenuation and signal radiation disturb the influence to antenna parameter.
In the specific implementation; Can increase a testboard; This testboard is divided into two-layer, and spectrum measurement appearance 140 is placed in the upper strata of testboard, and said comprehensive tester 130, data acquisition unit 170 and display 180 are placed in the lower floor of said testboard; Thereby can reduce the length of connecting line, further reduce the loss of signal transmission.
Further, in the test macro of antenna for mobile phone provided by the invention, the cable of horn antenna 120 and test table 110 all is laid on the quieter material below of microwave dark room wall, reduces the electromagnetic interference of signal attenuation and cable with this.And, horn antenna 120, test table 110, comprehensive tester 130 and spectrum measurement appearance 140 difference ground connection that said microwave dark room is outer, the noise that each equipment is produced can not crosstalked at equipment room.
Below the operation principle of the test macro of antenna for mobile phone provided by the invention is described in detail:
Earlier mobile phone is placed on the anchor clamps 200 in the microwave dark room, when beginning to test, test table 110 is reduced to initial position, and makes antenna for mobile phone opposed with the horn antenna 120 relative with test table 110 that is fixed in the microwave dark room.To afterwards, spectrum measurement appearance 140 is connected on the signal distributor 150, and comprehensive tester 130 is connected on the signal distributor 150 through radiofrequency signal attenuator 160.Comprehensive tester 130 is connected with display 180 (like PC) through data acquisition unit 170; Parameter when gathering the antenna for mobile phone test through PC; And parameters such as antenna power P, reception signal strength signal intensity indication RSSI, signal sensitivity SENSITIVITY, error rate BER can be set through PC; After treating that each item test parameter is provided with completion, just can test antenna for mobile phone.When test; Form closed loop through horn antenna 120, comprehensive tester 130, radiofrequency signal attenuator 160, signal distributor 150, spectrum measurement appearance 140; Also the analysis result of comprehensive tester 130 is transferred on the PC and shows through data acquisition unit 170; Draw the parameter of antenna, judge whether to need to improve antenna performance.
It is understandable that, concerning those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the test macro of an antenna for mobile phone is characterized in that, comprising:
Be used to control the test table that mobile phone rotates;
Be used to receive the horn antenna that mobile phone transmits;
The base station that is used for analogue mobile phone, the comprehensive tester that the signal that receives is analyzed;
Be used for the signal of mobile phone is carried out the spectrum measurement appearance of spectrum analysis;
Be used to adjust the signal of mobile phone, improve the signal distributor of signal quality;
The radiofrequency signal attenuator of high-intensity signal of antenna for mobile phone output is used to decay;
Be used to gather the data acquisition unit of the digital signal of comprehensive tester output;
Be used to show the display of test data;
Said test table and horn antenna are arranged in microwave dark room, and said comprehensive tester, spectrum measurement appearance, signal distributor, radiofrequency signal attenuator, data acquisition unit and display are positioned at outside the microwave dark room; Said mobile phone is placed on the test table; And be connected with signal distributor; Said horn antenna is connected with the spectrum measurement appearance with comprehensive tester; Said comprehensive tester is connected with display through data acquisition unit, and comprehensive tester also is connected with signal distributor through the radiofrequency signal attenuator, and said signal distributor is connected with the spectrum measurement appearance.
2. the test macro of antenna for mobile phone according to claim 1 is characterized in that, also comprises being used to control the turntable controller that test table rotates, and said turntable controller is connected with said test table.
3. the test macro of antenna for mobile phone according to claim 1 is characterized in that, test table is provided with the anchor clamps that are used for fixing mobile phone.
4. the test macro of antenna for mobile phone according to claim 1 is characterized in that, when beginning to test, the antenna and the horn antenna of said mobile phone are opposed.
5. the test macro of antenna for mobile phone according to claim 1; It is characterized in that; The line of said antenna for mobile phone and horn antenna upper edge and the angle between the horizontal plane are 30 °, and the line of said antenna for mobile phone and horn antenna lower edge and the angle between the horizontal plane are-30 °.
6. the test macro of antenna for mobile phone according to claim 1 is characterized in that, the air line distance between said test table and the horn antenna is 3-10m.
7. the test macro of antenna for mobile phone according to claim 1 is characterized in that, the air line distance between test table and the ground is 0.8-1.3m, and the air line distance between said horn antenna and the ground is 0.8-1.3m.
8. the test macro of antenna for mobile phone according to claim 1 is characterized in that, the air line distance between said comprehensive tester and the horn antenna is 2-10m, and the air line distance between spectrum measurement appearance and the horn antenna is 2-10m.
9. the test macro of antenna for mobile phone according to claim 8 is characterized in that, the air line distance between said comprehensive tester and the spectrum measurement appearance is 0.5-1m, and said comprehensive tester is positioned at the below of spectrum measurement appearance.
10. the test macro of antenna for mobile phone according to claim 1 is characterized in that, said horn antenna, test table, comprehensive tester and spectrum measurement appearance be ground connection respectively.
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