CN104714114A - Vector network analyzer - Google Patents
Vector network analyzer Download PDFInfo
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- CN104714114A CN104714114A CN201310669830.9A CN201310669830A CN104714114A CN 104714114 A CN104714114 A CN 104714114A CN 201310669830 A CN201310669830 A CN 201310669830A CN 104714114 A CN104714114 A CN 104714114A
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- signal
- network analyzer
- vector network
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Abstract
The invention discloses a vector network analyzer, which comprises a signal source, a signal separation device, a receiver, a processing unit, and a display unit, wherein the signal source provides excitation signals for a tested piece and has frequency scanning and power scanning functions; the signal separation device is composed of a power divider and a directional coupler for completing extraction of input signals and reflection signals of the tested piece; and the receiver receives signals separated by the signal separation device and analyzes and processes the signals. Testing sensitivity is high, and demands of testing dynamic ranges of various tested pieces can be met.
Description
Technical field
The present invention relates to a kind of network analyzer, particularly relate to a kind of vector network analyzer.
Background technology
In the past ten years, vector network analyzer is subject to the favor of more and more insider due to its lower cost and efficient manufacturing technology.Although network analysis theory is present in many decades, until the modern individual desktop analyser of phase early 1980s First is just born.Vector network analyzer can be used for the amplitude of measuring equipment, phase place and impedance.Because network analyzer is a kind of closed Challenge-response system, therefore excellent precision can be realized when measuring RF characteristic.
Usually we need a large amount of measurement practices, could accurately measure amplitude and phase parameter, avoid gross mistake.In portion radio frequency instrument, due to the uncertainty measured, little error is left in the basket possibly and disregards, and for accurate instruments such as network analyzers, these little errors but can not be ignored.
Summary of the invention
The object of the present invention is to provide a kind of vector network analyzer, have and use the features such as simple, measuring accuracy is high, error is little.
The present invention realizes mainly through following technical scheme: a kind of vector network analyzer, comprises signal source, signal separator, receiver, processing unit, display unit.
Described signal source provides measured piece pumping signal, possesses frequency sweeping and power scan function.
Described signal separator is made up of power splitter and directional coupler, completes the extraction to measured piece input signal and reflected signal.
Described receiver Received signal strength tripping device is separated the signal obtained, and carries out treatment and analysis to these signals.
Processing unit is responsible for carrying out data processing to output signal, and display unit is responsible for showing test results.
Beneficial effect of the present invention is, improves the degree of accuracy of detection signal, reduces the error produced in testing process.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention
Embodiment
Do further to resolve to technical scheme of the present invention below in conjunction with enforcement, but following content is not intended to limit the scope of the invention.
Below in conjunction with accompanying drawing, 1 couple of the present invention specifically sets forth:
As shown in Figure 1, a kind of vector network analyzer in the present embodiment, comprises signal source, signal separator, receiver, processing unit, display unit.
Described signal source provides measured piece pumping signal, possesses frequency sweeping and power scan function.For ensureing the frequency accuracy of test, in network analyzer, signal source adopts frequency combining method to realize.
Described signal separator is made up of power splitter and directional coupler, completes the extraction to measured piece input signal and reflected signal.Power splitter mainly provides reference signal and broadband to cover, directional coupler is responsible for being separated the pumping signal in reflection measurement and reflected signal, when signal is accessed by directional coupler input end, coupled end has coupling output, now be called that forward transmits, directional coupler is equivalent to not divide equally power divider.
Described receiver Received signal strength tripping device is separated the signal obtained, and carries out treatment and analysis to these signals.The built-in multiple stage receiver of vector network analyzer, when a signal is detected, becomes digital quantity aftertreatment by ADC after input signal being carried out down coversion by tuned receiver.Phase place and the range signal of signal can be obtained like this.Tuned receiver will pass through bandpass filtering treatment due to intermediate-freuqncy signal, due to wave detector bandwidth test pattern, thisly can cause large test noise bandwidth (20G) without frequency-selecting test, and the intermediate-frequency bandwidth of tuned receiver can be as small as 1KHz, can ensure that receiver has good measurement sensitivity like this, and have fine inhibiting effect to clutter distortion components in measured piece output signal.
Processing unit is responsible for carrying out data processing to output signal, and display unit is responsible for showing test results.
Claims (4)
1. a vector network analyzer, is characterized in that: comprise signal source, signal separator, receiver, processing unit, display unit.
2. a kind of vector network analyzer according to claim 1, is characterized in that: described signal source provides measured piece pumping signal, possesses frequency sweeping and power scan function.
3. a kind of vector network analyzer according to claim 1, is characterized in that: described signal separator is made up of power splitter and directional coupler, completes the extraction to measured piece input signal and reflected signal.
4. a kind of vector network analyzer according to claim 1, is characterized in that: described receiver Received signal strength tripping device is separated the signal obtained, and carries out treatment and analysis to these signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669830.9A CN104714114A (en) | 2013-12-11 | 2013-12-11 | Vector network analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669830.9A CN104714114A (en) | 2013-12-11 | 2013-12-11 | Vector network analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104714114A true CN104714114A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310669830.9A Pending CN104714114A (en) | 2013-12-11 | 2013-12-11 | Vector network analyzer |
Country Status (1)
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| CN (1) | CN104714114A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542906A (en) * | 2019-08-19 | 2019-12-06 | 中电科仪器仪表有限公司 | Method for improving scanning test phase precision of vector network analyzer |
| WO2023207252A1 (en) * | 2022-04-26 | 2023-11-02 | 苏州华兴源创科技股份有限公司 | Vector network analysis system |
-
2013
- 2013-12-11 CN CN201310669830.9A patent/CN104714114A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542906A (en) * | 2019-08-19 | 2019-12-06 | 中电科仪器仪表有限公司 | Method for improving scanning test phase precision of vector network analyzer |
| CN110542906B (en) * | 2019-08-19 | 2021-09-03 | 中电科思仪科技股份有限公司 | Method for improving scanning test phase precision of vector network analyzer |
| WO2023207252A1 (en) * | 2022-04-26 | 2023-11-02 | 苏州华兴源创科技股份有限公司 | Vector network analysis system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |
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| WD01 | Invention patent application deemed withdrawn after publication |