CN110417492A - A kind of detection aerial band is interior to receive spuious method - Google Patents
A kind of detection aerial band is interior to receive spuious method Download PDFInfo
- Publication number
- CN110417492A CN110417492A CN201910739652.XA CN201910739652A CN110417492A CN 110417492 A CN110417492 A CN 110417492A CN 201910739652 A CN201910739652 A CN 201910739652A CN 110417492 A CN110417492 A CN 110417492A
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- antenna
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- miniature radio
- frequency switch
- frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The present invention relates to spuious method is received in a kind of detection aerial band, specifically includes the following steps: increasing a miniature radio-frequency switch close to antenna part on RF circuit 1) in the circuit design link of complete machine production；2) PCB layout is made according to the circuit diagram of design, and is well placed the direction of miniature radio-frequency switch, 3) performance of various pieces is debugged；4) complete machine is put into shielded box, by the end Jie miniature radio-frequency switch of RF p-wire, the other end is connected on spectrum analyzer by the RF p-wire of shielded box；5) turn off wireless SSID in web；6) spectrum analyzer is arranged to the frequency range measured to needs.The present invention is based on the characteristics that the performance of complete machine internal antenna and miniature radio-frequency switch, and the measurement for the spurious in band signal that complete machine internal antenna receives is carried out by spectrum analyzer.
Description
Technical field
The invention belongs to the manufacturing fields of antenna, and in particular to a method of it is received in detection aerial band spuious.
Background technique
The superiority and inferiority of antenna performance has great shadow to the performance of the product (such as AP, the PON etc. with Wi-Fi) with antenna
Ring, find in a large amount of research practice: it is spuious to the interference of antenna to measure other parts in complete machine, then spuious to interfering
Signal does specific aim and is treated as guaranteeing the step that antenna performance has to do.Therefore, how simple and direct, be rapidly performed by day
Spuious detection is received in tape becomes an important R&D direction.
Summary of the invention
The present invention is in order to solve the above technical problems, provide a kind of method that the interior reception of detection aerial band is spuious.
To achieve the goals above, the technical solution adopted by the present invention is as follows:
A kind of detection aerial band is interior to receive spuious method, specifically includes the following steps:
Step 1: in the circuit design link of complete machine production, on RF circuit, by antenna circuit, π type match circuit and RF
Front-end circuit is sequentially connected electrically, and is increasing a miniature radio-frequency switch close to antenna part；
Step 2: making PCB layout according to the circuit diagram of step 1 design, and it is well placed the side of miniature radio-frequency switch
To；
Step 3: the performance to various pieces is debugged；
Step 4: complete machine is put into shielded box after performance test is debugged, an end Jie of RF p-wire is miniature
On RF switch stand, the other end is connected on spectrum analyzer by the RF p-wire of shielded box；At this point, miniature radio-frequency switch with
Signal transmission between RF front-end circuit is blocked, and the signal of antenna transmission can be switched by miniature radio-frequency and RF p-wire is aobvious
Show on spectrum analyzer, avoids antenna and receive and spuious be leaked to RF front-end circuit；
Step 5: turning off wireless SSID in web, it is not set externally to emit wireless signal, it is ensured that antenna received
It is the spurious signal that other parts generate on plank；
Step 6: according to the frequency range of antenna to be measured, the frequency range that spectrum analyzer setting is measured to needs can pass through frequency
Spectrum analysis instrument detects the stray signals that complete machine internal antenna receives.
Further, by taking 2.4G antenna as an example, the antenna of spectrum analyzer setting receives each parameter that bottom is made an uproar are as follows:
Stat freq:2350MHZ
stop freq:2550Mhz
RBW:10khz, VBW:30khz
Detect:peak
Trace:Maxhold。
Further, in step 1, the miniature radio-frequency switch is set between π type match circuit and RF front-end circuit.
Further, in step 4, RF p-wire is by inserting the connection of RF p-wire with miniature radio-frequency switch connection
What the mode that head is buckled on the stand of miniature radio-frequency switch was realized.
Compared with prior art, obtained by the present invention to have the beneficial effect that:
The present invention is performance and miniature radio-frequency switch (RF subminiature coaxial based on complete machine internal antenna
Switch) characteristic (after radio frequency testing line on miniature radio-frequency swich buckle have one-way conduction characteristic, thereafter terminal circuit disconnect,
Whole link signal transmission is unaffected when not detaining), by the RF circuit of complete machine increase miniature radio-frequency switch, make antenna,
Miniature radio-frequency switch is connected to spectrum analyzer, the measurement for the spurious in band signal that Lai Jinhang complete machine internal antenna receives,
The stray signals that antenna receives when judging complete machine work, can be for the band spurious letter received to reach
It number processes, so that it is minimized the interference of antenna, guarantees the optimal purpose of the antenna performance of complete machine.
Detailed description of the invention
Fig. 1 is the RF circuit diagram in one embodiment of the invention；
Fig. 2 is the annexation figure of each equipment when testing in one embodiment of the invention；
1, antenna circuit in the figure, 2, π type match circuit, 3, miniature radio-frequency switch, 4, RF front-end circuit, 5, shielded box,
6, spectrum analyzer, 7, radio frequency testing line, 8, complete machine to be measured.
Specific embodiment
Further details of narration is carried out to the present invention with reference to embodiments.
A kind of detection aerial band is interior to receive spuious method, specifically includes the following steps:
Step 1: in the circuit design link of complete machine production, as shown in Figure 1, on RF circuit, by antenna circuit, π type
It is sequentially connected electrically with circuit and RF front-end circuit, and is increasing a miniature radio-frequency switch close to antenna part；It is described miniature to penetrate
Frequency switch is set between π type match circuit and RF front-end circuit；
Step 2: carrying out PCB layout according to the circuit diagram of step 1 design, and it is well placed the side of miniature radio-frequency switch
To；
Step 3: the performance to various pieces is debugged；
Step 4: after performance test is debugged, as shown in Fig. 2, complete machine to be measured is put into shielded box, by RF p-wire
Connection plug be buckled in miniature radio-frequency switch stand on, the other end is connected to spectrum analyzer by the RF p-wire of shielded box
On；At this point, the signal transmission between miniature radio-frequency switch and RF front-end circuit is blocked, the signal of antenna transmission can be by micro-
Type RF switch and RF p-wire are shown on spectrum analyzer, are avoided antenna and are received and spuious are leaked to RF front-end circuit end；
Step 5: turning off wireless SSID in web, it is not set externally to emit wireless signal, it is ensured that antenna received
It is the spurious signal that other parts generate on plank；
Step 6: according to the frequency range of antenna to be measured, the frequency range that spectrum analyzer setting is measured to needs can pass through frequency
Spectrum analysis instrument detects the stray signals that complete machine internal antenna receives；
By taking 2.4G antenna as an example, the antenna of spectrum analyzer setting receives each parameter that bottom is made an uproar are as follows:
Stat freq:2350MHZ
stop freq:2550Mhz
RBW:10khz, VBW:30khz
Detect:peak
Trace:Maxhold。
RBW, VBW make an uproar according to spectrum analyzer bottom after arrangement above can arrive -100db or so, and bottom is made an uproar lower measure
Interference signal is more accurate；
Due to being measured under shielding environment, the interference that antenna receives is from the interference of plank itself generation, so
Interference is processed according to the result measured afterwards, influence of the other parts interference to wireless antenna on plank can be reduced, improved
The antenna receptivity of complete machine.
Embodiment described above is merely a preferred embodiment of the present invention, and the simultaneously exhaustion of the feasible implementation of non-present invention.It is right
For persons skilled in the art, any aobvious to made by it under the premise of without departing substantially from the principle of the invention and spirit and
The change being clear to should be all contemplated as falling within claims of the invention.
Claims (2)
1. receiving spuious method in a kind of detection aerial band, which is characterized in that specifically includes the following steps:
Step 1: in the circuit design link of complete machine production, on RF circuit, by antenna circuit, π type match circuit and the front end RF
Circuit is sequentially connected electrically, and is increasing a miniature radio-frequency switch close to antenna part；
Step 2: making PCB layout according to the circuit diagram of step 1 design, and it is well placed the direction of miniature radio-frequency switch；
Step 3: the performance to various pieces is debugged；
Step 4: complete machine is put into shielded box, one end of RF p-wire is buckled in miniature radio-frequency after performance test is debugged
It switchs on stand, the other end is connected on spectrum analyzer by the RF p-wire of shielded box；At this point, before miniature radio-frequency switch and RF
Signal transmission between terminal circuit is blocked, and the signal of antenna transmission can be switched by miniature radio-frequency and RF p-wire is shown in
On spectrum analyzer, avoids antenna and receive and spuious be leaked to RF front-end circuit end；
Step 5: turning off wireless SSID in web, it is not set externally to emit wireless signal, it is ensured that antenna received is plate
The spurious signal that other parts generate on son；
Step 6: according to the frequency range of antenna to be measured, the frequency range that spectrum analyzer setting is measured to needs can pass through frequency spectrum point
Analyzer detects the stray signals that complete machine internal antenna receives.
2. receiving spuious method in a kind of detection aerial band according to claim 1, which is characterized in that in step 4,
RF p-wire and miniature radio-frequency switch connection are by the way that the connection plug of RF p-wire to be buckled on the stand of miniature radio-frequency switch
Mode realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739652.XA CN110417492B (en) | 2019-08-12 | 2019-08-12 | Method for detecting in-band received spurious signals of antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739652.XA CN110417492B (en) | 2019-08-12 | 2019-08-12 | Method for detecting in-band received spurious signals of antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110417492A true CN110417492A (en) | 2019-11-05 |
| CN110417492B CN110417492B (en) | 2021-09-07 |
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| CN201910739652.XA Active CN110417492B (en) | 2019-08-12 | 2019-08-12 | Method for detecting in-band received spurious signals of antenna |
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|---|---|
| CN110417492B (en) | 2021-09-07 |
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