CN103217593A - Test equipment of wireless electronic device - Google Patents
Test equipment of wireless electronic device Download PDFInfo
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- CN103217593A CN103217593A CN2012100188670A CN201210018867A CN103217593A CN 103217593 A CN103217593 A CN 103217593A CN 2012100188670 A CN2012100188670 A CN 2012100188670A CN 201210018867 A CN201210018867 A CN 201210018867A CN 103217593 A CN103217593 A CN 103217593A
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Abstract
The invention provides test equipment of a wireless electronic device. The test equipment of the wireless electronic device comprises a metal case, radio frequency absorption materials, a first measuring antenna and an impedance regulation module. The impedance regulation module comprises a dielectric layer, a first inside antenna and a second inside antenna, wherein the second inside antenna is electrically connected with the first measuring antenna. The first inside antenna and the second inside antenna are arranged on two opposite sides of the dielectric layer and respectively comprise a first antenna trunk and a second antenna trunk which are parallel to each other.
Description
Technical field
The present invention relates to a kind of testing apparatus of electronic installation, particularly relate to a kind of testing apparatus of wireless electron device.
Background technology
Wireless electron device needs constantly to test the receipts state of sending out that this installs corresponding wireless signal in the process of design, with the basis as following wireless electron device adjustment and design.In addition, wireless electron device still will constantly be tested before dispatching from the factory, and meets the requirement and the standard of manufacturer and competent authority with the performance of confirming wireless electron device.
For wireless electron device being isolated from extraneous wireless signal, this wireless electron device to be measured normally is arranged in the shielded box (Shielding Box) with metal shell when test.Figure 1 shows that the schematic internal view of a traditional shielded box 10.Tradition shielded box 10 comprises metal shell 11, absorbing material 20 and first is measured antenna 30, wherein first end of measuring antenna 30 is provided with feeding portion 12, measures antenna 30 for first and receives signals by feeding portion 12 and generate an electromagnetic field among shielded box 10.
As shown in Figure 1, absorbing material 20 is arranged at the inside surface of metal shell 11, for absorbing the wireless signal of wireless electron device 50 to be measured to metal shell 11 emissions.Thus, absorbing material 20 can avoid a plurality of wireless signals to form the bigger coupled antenna signal of power and influence test result in reflection and refraction back.In addition, metal shell 11 is that other ground connection (Ground) 60 guides to 60 with the extraneous wireless signal of avoiding forming loop inductance and will receive.
In addition, test antenna 30 shown in Figure 1 is essentially cone and extends to the other end from an end of metal shell 11, and wireless electron device 50 wherein to be measured is arranged in the metal shell 11 on the plane of test antenna 30 to test.In other words, test antenna 30 side direction form an electromagnetic field to shroud and to test wireless electron device 50.Yet because 30 of test antennas are as the erratic cone of shape, so test antenna 30 also will produce the erratic electromagnetic field of field intensity among traditional shielded box.Thus, the change of wireless electron device 50 position in traditional shielded box will make the first measurement antenna 30 obtain the quite significant measurement result (as emissive power) of difference.In other words, first measure the wireless signal measurement result that antenna 30 may be obtained rather unstable because of the variation of wireless electron device 50 sizes to be measured or placement location.
Summary of the invention
Purpose of the present invention is for providing a kind of testing apparatus of wireless electron device, to reduce because of sizes of electronic devices to be measured or the different measurement signal differences of bringing of placement location and to promote measurement stability.
The testing apparatus of wireless electron device of the present invention comprises metal shell, radio frequency absorption material, first measurement antenna and the impedance adjusting module, and wherein the radio frequency absorption material is arranged in the metal shell and impales an inner space.The radio frequency absorption material further comprises a clip slot, is formed at an end of radio frequency absorption material, wherein measures antenna to small part first and is arranged among the clip slot.In preferred embodiment, first measures antenna is sheet and comprises first metal arm and second metal arm, connects the impedance adjusting module and extends along the surface of radio frequency absorption material diverse location.In addition, the radio frequency absorption material comprises first absorption layer and second absorption layer, wherein first measures antenna and is arranged in the clip slot between the absorption layer.
The impedance adjusting module comprises dielectric layer, first inside antenna and second inside antenna, and wherein first inside antenna and second inside antenna are arranged at the relative both sides of dielectric layer respectively.First inside antenna and second inside antenna comprise the first antenna trunk and the second antenna trunk that is parallel to each other respectively.First inside antenna comprises first adjustment part of extending from the first antenna trunk, one end.Second inside antenna comprises second adjustment part of extending from the second antenna trunk, one end, and wherein the projection on dielectric layer of first adjustment part and second adjustment part at least partly overlaps.In addition, the impedance adjusting module comprises an impedance and adjusts groove, is formed at second adjustment part of dielectric layer and adjacency second inside antenna.
Description of drawings
Figure 1 shows that the synoptic diagram of a traditional shielded box;
Figure 2 shows that the embodiment synoptic diagram of testing apparatus of the present invention;
Figure 3 shows that the embodiment explosive view of testing apparatus of the present invention;
Fig. 4 A is depicted as the synoptic diagram of impedance adjusting module shown in Figure 2;
Fig. 4 B is depicted as the enlarged diagram of impedance adjusting module shown in Fig. 4 A;
Fig. 5 A-5D is depicted as testing apparatus shown in Figure 2 at electromagnetic field synoptic diagram that the inner space produced;
Fig. 6 A is depicted as another embodiment of the present invention and comprises the constitutional diagram that the first measurement antenna, second is measured antenna and impedance adjusting module;
Fig. 6 B is depicted as the explosive view of another embodiment of testing apparatus of the present invention;
Fig. 7 A is depicted as the synoptic diagram of another embodiment of testing apparatus of the present invention; And
Fig. 7 B-7D is depicted as testing apparatus of the present invention.
The reference numeral explanation
100 testing apparatuss
110 metal shells
120 signal feeding portions
200 radio frequency absorption materials
210 inner spaces
220 clip slots
300 first measure antenna
310 first metal arms
320 second metal arms
330 second measure antenna
400 impedance adjusting modules
410 dielectric layers
420 first inside antennas
421 first adjustment parts
422 first adjust arm
423 second adjust arm
430 second inside antennas
431 second adjustment parts
432 the 3rd adjust arm
433 the 4th adjust arm
440 first antenna trunks
441 second antenna trunks
θ
1First angle
θ
2Second angle
Embodiment
Fig. 2 and Figure 3 shows that the embodiment synoptic diagram and the explosive view of testing apparatus 100 of the present invention.In the present embodiment, testing apparatus 100 comprises metal shell 110, signal feeding portion 120, radio frequency absorption material 200, first and measures antenna 300 and impedance adjusting module 400, and wherein an electronic installation 500 to be measured is arranged among the inner space 210 that radio frequency absorption material 200 impaled.
As shown in Figure 2, metal shell 110 coats radio frequency absorption material 200 in fact and is arranged at electronic installation to be measured 500 among the radio frequency absorption material 200, so that electronic installation 500 to be measured and extraneous other wireless signal emissive sources are isolated.Thus, metal shell 110 can guarantee that extraneous wireless signal can be not by mistake do not measured antenna 300 by first and receive and make extraneous wireless signal be mistaken as the wireless signal that electronic installation 500 to be measured wireless electron devices such as (for example) mobile phones is sent.On the other hand, metal shell 110 also will limit wireless signal that electronic installation 500 to be measured sent among radio frequency absorption material 200, measure antenna 300 and only can receive 500 wireless signals that directly send of electronic installation to be measured to guarantee first.In addition, metal shell 110 preferable ground connection (Ground) guide to the extraneous wireless signal of avoiding forming loop inductance and will receive.
Radio frequency absorption material 200 is used to absorb the wireless signal that electronic installation 500 to be measured is sent, and is combined into a coupled antenna signal that power bigger because of reflecting and reflecting to avoid most wireless signals in inner space 210.In other words, radio frequency absorption material 200 can guarantee that the first measurement antenna 300 correctly is received from the single wireless signal that 500 of electronic installations to be measured directly send, and non-binding countless through reflecting and reflecting and the coupled antenna signal of final be combined into.In addition, the radio frequency absorption material 200 of present embodiment comprises a clip slot 220, and an end that is formed at radio frequency absorption material 200 is measured antenna 300 for holding first.In the present embodiment, clip slot 220 is preferably and is formed between two blocks of corresponding radio frequency absorption materials 200 and size and thickness all corresponding first are measured the slit of antenna 300, but is not limited thereto; In different embodiment, clip slot 220 is slit that cuts out from single radio frequency absorption material 200 also.In addition, the first measurement antenna 300 of present embodiment is for sheet and comprise two first metal arm 310 and second metal arms 320 that extend with different directions, wherein first metal arm 310 and second metal arm 320 are attached at radio frequency absorption material 200 inside surfaces of corresponding clip slot 220 respectively, but are not limited thereto.First measures antenna 300 can have the metal arm of other number or have other and be fit to be arranged at shape in the clip slot 220.
In Fig. 2 and embodiment shown in Figure 3, metal shell 110 is essentially cone shell and measures antenna 300 and electronic installation to be measured 500 for holding radio frequency absorption material 200, first.In addition, the radio frequency absorption material 200 among the metal inner casing also is a cone shell, and the inner space 210 that wherein radio frequency absorption material 200 surrounded also is that taper is for holding electronic installation 500 to be measured.Yet in different embodiment, the inner space 210 among metal shell 110, radio frequency absorption material 200 and the radio frequency absorption material 200 also can be adjusted to rectangle, square or other shapes according to the size and the shape of electronic installation 500 to be measured.
First of present embodiment is measured antenna 300 preferable ends that are arranged at radio frequency absorption material 200 and inner space 210, and wherein the first measurement antenna 300 will receive the high-frequency wireless signal and produce the field strength distribution uniform electric magnetic field according to this wireless signal in inner space 210 from back-end network tester (Tester) or spectrum analysis instrument (Spectrum Analyzer) by impedance adjusting module 400 and signal feeding portion 120.Because first measures the position of antenna 300 corresponding to radio frequency absorption material 200 and 210 axle center, inner space.Therefore, above-mentioned design and structure can guarantee that first measures antenna 300 produces distributed uniform in inner space 210 field intensity, and wherein the field intensity that produced of the first measurement antenna 300 is preferably according to one and outwards is evenly distributed perpendicular to 210 planes, inner space and the axle center that penetrates 210 centers, inner space.Thus, the first measurement antenna 300 also changes by the different signals that cause of size or ornaments position that uniform field intensity compensates because of electronic installation 500 to be measured; Also therefore, even electronic installation to be measured 500 is furnished the diverse location in inner space 210, first measures antenna 300 received wireless signals will not have significant difference aspect frequency or the power.
Fig. 4 A is depicted as the synoptic diagram of impedance adjusting module 400 shown in Figure 2.Fig. 4 B is depicted as the enlarged diagram of impedance adjusting module 400 shown in Fig. 4 A.In the embodiment shown in Fig. 4 A and Fig. 4 B, impedance adjusting module 400 comprises dielectric layer 410, first inside antenna 420 and second inside antenna 430, and wherein first inside antenna 420 and second inside antenna 430 are respectively microstrip antenna (Microstrip Antenna) and line of rabbet joint antenna (Slot-line Antenna).
In the embodiment shown in Fig. 4 A and Fig. 4 B, first inside antenna 420 and second inside antenna 430 are arranged at the relative both sides of dielectric layer 410 respectively, and wherein first inside antenna 420 and second inside antenna 430 comprise the first antenna trunk 440 and the second antenna trunk 441 that is parallel to each other in fact respectively.
Shown in Fig. 4 A and Fig. 4 B, first inside antenna 420 comprises first adjustment part 421 of extending from the first antenna trunk, 440 1 ends, and second inside antenna 430 comprises second adjustment part 431 of extending from the second antenna trunk, 441 1 ends.In the present embodiment, first adjustment part 421 and second adjustment part 431 are used to adjust the impedance of testing apparatus 100 integral body to reduce the consume that wireless signal is transferred to the back-end network tester.In addition, first adjustment part 421 shown in Figure 4 and second adjustment part 431 small part that is projected on dielectric layer 410 overlaps, and preferable by the contactless electric connection of dielectric layer 410 generations.In addition, extend from an end of antenna trunk 440,441 first adjustment part 421 of present embodiment and second adjustment part 431, but be not limited thereto; In different embodiment, the adjustment part 421,431 of inside antenna 420,430 can be extended from other positions of antenna trunk 440,441 according to the needs of impedance matching.
Shown in Fig. 4 A and Fig. 4 B, first adjustment part 421 of present embodiment comprises first and adjusts that arm 422 and second is adjusted arm 423 and second adjustment part 431 comprises the 3rd and adjusts arm 432 and the 4th and adjust arm 433.Accompany the first angle θ between first adjustment part 421 and second adjustment part 431
1, and accompany the second angle θ between the 3rd adjustment part and the 4th adjustment part
2Therefore, first inside antenna 420 of present embodiment and the two ends of second inside antenna 430 have the shape of Y word in fact respectively.In addition, in the embodiment shown in Fig. 4 A and Fig. 4 B, the first angle θ
1Be equal to the second angle θ in fact
2, but be not limited thereto.In different embodiment, the first angle θ
1And the second angle θ
2Can adjust according to the requirement of impedance matching.In addition, first adjustment part 421 shown in Fig. 4 A and Fig. 4 B and second adjustment part 431 have two respectively and adjust arm, but are not limited thereto; In different embodiment, adjustment part 421,431 can have the adjustment arm of other numbers, length and bearing of trend respectively according to the needs in the impedance matching adjustment.
In addition, the impedance adjusting module 400 shown in Fig. 4 A and Fig. 4 B further comprises an impedance and adjusts groove 450, is formed at dielectric layer 410 and adjusts arm 433 in abutting connection with the 4th of second adjustment part 431.In the present embodiment, the square hole that groove is essentially diameter 12mm and is connected in the 4th adjustment arm 433 is adjusted in impedance, in order to adjust the overall impedance coupling between testing apparatus 100 and the back-end network tester.Yet in different embodiment, groove is adjusted in impedance can have other shapes (as oval or circular) or size according to the characteristic of the first measurement antenna 300, first inside antenna 420, second inside antenna 430 and the characteristic of dielectric layer 410.
Fig. 5 A-5D be depicted as testing apparatus 100 shown in Figure 2 in the inner space the 210 electromagnetic field synoptic diagram that produced.Fig. 5 A is depicted as test antenna and is receiving the same polarization electric field (Co-Polarized E-Field) that is produced behind the 1GHz signal.Fig. 5 B is depicted as test antenna and is receiving the cross polarization electric field (Cross-Polarized E-Field) that is produced behind the 1GHz signal.Fig. 5 C is depicted as test antenna and is receiving the same polarization magnetic field (Cross-Polarized H-Field) that is produced behind the 1GHz signal.Fig. 5 D is depicted as test antenna and is receiving the cross polarization magnetic field (Cross-Polarized H-Field) that is produced behind the 1GHz signal.
Shown in Fig. 5 A-5D, the electric field that the present invention's first measurement antenna 300 is produced in inner space 210 and the field strength distribution in magnetic field are quite even.Present embodiment electric field and magnetic field are that the center outwards distributes with circle with the position in 210 axle center, inner space in fact, so electric field and magnetic field form a plurality of border circular areas with different-diameter and different field intensity in inner space 210.In the present embodiment, electronic installation 500 to be measured is preferably the middle position that inner space 210 is set and carries out performance test; In other words, electronic installation 500 to be measured is preferably wireless signal that the middle position that is arranged at field intensity intensity unanimity sent with the acceptance test antenna and sends wireless signal from middle position to test antenna, but is not limited thereto.Because each border circular areas all is evenly distributed according to same axle center,, also can not cause the deviation of measurement result even therefore electronic installation 500 to be measured has different size or is arranged on inner space 210 diverse locations.
As above as can be known, the present invention comes the electromagnetic field that 210 generations outwards are evenly distributed with this axle center in the inner space by the first measurement antenna 300 that is positioned over 210 centers, inner space and axle center top.By this, the present invention can measure antenna 300 by first and send the stable wireless signal of signal strength to electronic installation 500 to be measured.On the other hand, test antenna also can be received the wireless signal that signal strength is stable from this electronic installation 500 to be measured from electronic installation 500 to be measured.Thus, even electronic installation to be measured 500 has different size or is arranged at the diverse location of inner space 210, testing apparatus 100 of the present invention also can obtain stable wireless signal measurement result by the average electromagnetic field of field strength distribution.
Fig. 6 A and Fig. 6 B are depicted as another embodiment of wireless electron device testing apparatus 100 of the present invention.In the embodiment shown in Fig. 6 A and Fig. 6 B, testing apparatus further comprises second and measures antenna 330, is electrically connected at first and measures antenna 300 and the signal that transmitted according to impedance adjusting module 400 simultaneously produces uniform field intensity among inner space 210.In addition, second of present embodiment is measured the frequency range that antenna 330 can further promote field intensity among the inner space 210, in order to the measurement of measuring radio transmission performance between antenna 300/330 and the electronic installation to be measured 500.
As shown in Figure 6A, first end of measuring antenna 300 is electrically connected at the surface of the second measurement antenna 330.In addition, measure antenna 300 surfaces and second space of measuring between antenna 330 surfaces is provided with radio frequency absorption material 200 first, with further absorption wireless electron device 500 to be measured or measure the wireless signal that antenna 300/330 is produced in inner space 210.Thus, absorbing material 200 can avoid a plurality of wireless signals to form the bigger coupled antenna signal of power and influence test result in reflection and refraction back.In addition, being arranged at first measures antenna 300 surfaces and second and measures absorbing material 200 between antenna 330 surfaces and also can strengthen the structural strength of measuring antenna 300,330 and stably be arranged at shown in Fig. 6 B among the absorbing material 200 for it.
In the embodiment shown in Fig. 6 A and Fig. 6 B, the first measurement antenna 300 and second is measured antenna 330 and is come down to mutually vertically, and wherein the first measurement antenna 300 is to be connected to second in the mode that stands on the second measurement antenna, 330 surfaces to measure antenna 330.By this, second measures antenna 330 is received from the signal that back-end network tester (not illustrating) is sent by the first measurement antenna 300 and impedance adjusting module 400, maybe the wireless signal that measures is transferred to the back-end network tester in wired mode by the first measurement antenna 300 and impedance adjusting module 400.
Fig. 7 A is depicted as the embodiment synoptic diagram of testing apparatus 100 shown in Fig. 6 B.Shown in Fig. 7 A, testing apparatus 100 comprises metal shell 110, signal feeding portion 120, radio frequency absorption material 200, first to be measured antenna 300, second and measures antenna 330 and impedance adjusting module 400, and wherein an electronic installation 500 to be measured is arranged among the inner space 210 that radio frequency absorption material 200 impaled.Present embodiment and testing apparatus 100 shown in Figure 2 are identical in fact aspect structure and operation principles, do not give unnecessary details so do not add at this.
Shown in Fig. 7 A, defining a field strength measurement zone in the inner space 210 of present embodiment, in order to measure between antenna 300,330 and the electronic installation to be measured 500 in the wireless signal feed-in loss of using under the different frequency.Above-mentioned measured zone can further be divided into nine and measure block, and wherein each measures Fig. 7 B-D that the measured signal feed-in loss of block will be recorded and be presented in the back.In addition, in the embodiment shown in Fig. 7 A, each is measured block and is all the square of 53mmX53mm in fact, but is not limited thereto; In different embodiment, those measure block also can have other sizes or shape.
Fig. 7 B-7D is depicted as shown in Fig. 7 A and measures 210 the wireless signal feed-in loss in the inner space of antenna 300,330 and electronic installation to be measured 500, and wherein the unit of wireless signal feed-in loss be decibel (dB).Fig. 7 B is depicted as the wireless signal feed-in loss that wireless signal to the electronic installation 500 to be measured of measuring antenna 300,330 transmission 900MHz is produced.Fig. 7 C is depicted as the wireless signal feed-in loss that wireless signal to the electronic installation 500 to be measured of measuring antenna 300,330 transmission 1800MHz is produced.Fig. 7 B is depicted as the wireless signal feed-in loss that wireless signal to the electronic installation 500 to be measured of measuring antenna 300,330 transmission 2450MHz is produced.
Shown in Fig. 7 B-7D, under each wireless signal frequency, the feed-in loss that measurement antenna 300,330 and wireless device to be measured 500 are produced under zones of different and transmission different frequency is in fact quite consistent.In other words, it is identical in fact that each measures the measured feed-in loss of block.Hence one can see that, the present invention is arranged at first of 210 centers, inner space and axle center top and measures antenna 300 and second and measure antenna 330 under the wireless signal of transmission different frequency, also can keep consistent in fact in the zones of different of different inner spaces 210.By this, the present invention can send the stable wireless signal of signal strength to electronic installation 500 to be measured by test antenna 300.Thus, even electronic installation to be measured 500 has different size or is arranged at the diverse location of inner space 210, testing apparatus 100 of the present invention also can obtain stable wireless signal measurement result by the average electromagnetic field of field strength distribution.
Though aforesaid description and diagram have disclosed preferred embodiment of the present invention, must recognize variously increase, many modifications and replace and may be used in preferred embodiment of the present invention, and can not break away from the spirit and the scope of the principle of the invention that claim of the present invention defines.Those skilled in the art can know from experience the modification that the present invention may be used in a lot of forms, structure, layout, ratio, material, element and assembly.Therefore, this paper, should be regarded as in order to explanation the present invention in all viewpoints in embodiment that this disclosed, but not in order to restriction the present invention.Scope of the present invention should be defined by claim of the present invention, and contains its legal equivalents, is not limited to previous description.
Claims (13)
1. the testing apparatus of a wireless electron device comprises:
One metal shell;
One radio frequency absorption material is arranged in this metal shell and impales an inner space, and wherein this radio frequency absorption material comprises the end that a clip slot is formed at this radio frequency absorption material;
One first measures antenna, is arranged among this clip slot and an end of this inner space; And
One impedance adjusting module electrically connects this first measurement antenna to receive this first measurement signal that antenna was transmitted or electric signal is transferred to this first measurement antenna, and wherein this impedance adjusting module comprises:
One dielectric layer;
One first inside antenna is arranged at a side of this dielectric layer and comprises one first antenna trunk; And
One second inside antenna, be arranged at this dielectric layer opposite side of this first inside antenna relatively, this second inside antenna is electrically connected at this first measurement antenna and comprises one second antenna trunk, and wherein this first antenna trunk and this second antenna trunk are essentially parallel.
2. testing apparatus as claimed in claim 1, wherein this first inside antenna comprises one first adjustment part of extending from this first antenna trunk, one end, this second inside antenna comprises one second adjustment part of extending from this second antenna trunk, one end, and this first adjustment part and this projection of second adjustment part on this dielectric layer at least partly overlap.
3. testing apparatus as claimed in claim 2, wherein this impedance adjusting module further comprises impedance adjustment groove, is formed at this dielectric layer and is adjacent to this second adjustment part.
4. testing apparatus as claimed in claim 2, comprise one first from this first adjustment part and adjust arm and one second adjustment arm, this second adjustment part comprises one the 3rd and adjusts arm and one the 4th adjustment arm, this first adjustment arm and the 4th is adjusted the projection of arm on this dielectric layer and is at least partly overlapped, and this second adjustment arm and the 3rd projection of adjustment arm on this dielectric layer at least partly overlap.
5. testing apparatus as claimed in claim 4, wherein this impedance adjusting module further comprises impedance adjustment groove, is formed at this dielectric layer and is adjacent to the 4th of this second inside antenna to adjust arm.
6. testing apparatus as claimed in claim 4, wherein this first is adjusted arm and this second and adjusts arm and extend and accompany one first angle from an end of this first inside antenna, the 3rd adjusts arm and the 4th adjusts arm and extends and accompany one second angle from an end of this second inside antenna, and this first angle is equal to this second angle in fact.
7. testing apparatus as claimed in claim 4, wherein the bearing of trend of this first adjustment arm and the 3rd adjustment arm is parallel in fact, and the bearing of trend that this second adjustment arm and the 4th is adjusted arm is parallel in fact.
8. testing apparatus as claimed in claim 2 further comprises a signal feeding portion, is electrically connected at this first inside antenna end of this first adjustment part relatively.
9. testing apparatus as claimed in claim 1, wherein this first measurement antenna is sheet and comprises one first metal arm and one second metal arm, connect this impedance adjusting module and also extend along the inside surface of this radio frequency absorption material diverse location in fact respectively, this inner space is between this first metal arm and this second metal arm.
10. testing apparatus as claimed in claim 9, wherein this radio frequency absorption material comprises one first absorption layer and one second absorption layer, and wherein this clip slot is formed between this first absorption layer and this second absorption layer.
11. testing apparatus as claimed in claim 1, wherein this impedance adjusting module will receive one first signal and transmit one second signal to this first measurement antenna according to this first signal from extraneous, this first is measured antenna and will produce an electromagnetic field in this inner space according to this second signal, and wherein the field intensity of this electromagnetic field outwards is evenly distributed perpendicular to this plane, inner space and the axle center that penetrates this center, inner space according to one.
12. testing apparatus as claimed in claim 1, wherein this metal shell and this radio frequency absorption material are essentially cone shell.
13. testing apparatus as claimed in claim 1, wherein this inner space is essentially cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210018867.0A CN103217593B (en) | 2012-01-20 | 2012-01-20 | Test equipment of wireless electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210018867.0A CN103217593B (en) | 2012-01-20 | 2012-01-20 | Test equipment of wireless electronic device |
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| CN103217593A true CN103217593A (en) | 2013-07-24 |
| CN103217593B CN103217593B (en) | 2017-04-12 |
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| Publication number | Publication date |
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| CN103217593B (en) | 2017-04-12 |
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