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중고 네트워크 + 임피던스 분석기

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본 장비들은 제어된 신호를 방출하고 데이터 네트워크나 장치가 이에 어떻게 반응하는지 측정합니다.
RF 회로 내에서 다양한 구성 요소가 의도한 대로 작동하는지 테스트하고 분석하는 데 사용됩니다.
우수한 중고 장비를 이곳에서 확인해 보세요.

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  • Savings of up to 90%
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어떻게 시작해야 할지 고민되세요?

전체 보기

네트워크 + 임피던스 분석기 간단 정보

벡터 네트워크 분석기(VNA)는 무엇인가요?

High-performance Vector Network Analyzers (VNA) are used to characterize and analyze RF and Microwave devices such as amplifiers, filters, power dividers/combiners, switches, antennas, and more. VNAs provide engineers with accurate device measurements including S-parameters, noise figures, return loss, and more.

벡터 네트워크 분석기(VNA)는 어디에 사용하나요?

A Vector Network Analyzer, a stimulus response testing equipment, is commonly used for research and development, design validation, failure analysis, and production testing by measuring the frequency response of component(s).

VNA는 교정이 필요한가요?

Yes, all VNAs are calibrated to ensure the highest quality results. The calibration process involves adjusting the instrument to eradicate the hardware systematic errors using traceable standards for accuracy and phase measurements.

How do you calibrate a Vector Network Analyzer?

The calibration process can be done manually or automatically, but in most cases, the manual method is used. The common methods of calibration include SOLT and TRL based on different parameters to remove systematic errors. Manual calibration involves selecting a known stimulus signal from a list of available signals within the VNA's software, then adjusting the amplitude and phase until the value corresponds to that from the known stimulus source. The network analyzer should be periodically calibrated with a reference calibrator to ensure the analyzer is measuring correctly. Periodic calibration guarantees the match with International standards.

VNA는 오류 정정 기능이 있나요?

Some VNAs have built-in error correction that may compensate for a variety of errors including thermal drift, time delay, source-load mismatch and optical path length variations.

벡터 네트워크 분석기와 네트워크 분석기의 차이점은 무엇인가요?

A Vector Network Analyzer measures the amplitude as well as phase characteristics of one and two-port devices such as wireless components, microstrip lines, and branched structures.

A Network Analyzer measures the network parameters of two-port and arbitrary number of ports devices such as amplifiers, filters etc.

벡터 네트워크 분석기와 스펙트럼 분석기의 차이점은 무엇인가요?

A Vector Network Analyzer measures complex component specifications at specific frequencies using a signal generator and a receiver.

A Spectrum Analyzer measures power across an entire frequency spectrum of the applied signal using a receiver only.

벡터 네트워크 분석기와 오실로스코프의 차이점은 무엇인가요?

An oscilloscope measures external signals by representing voltage waveforms as a function of time, while a Vector Network Analyzer measures both the amplitude and phase monitoring the response of a network.

VNA는 S11을 어떻게 측정하나요?

A VNA measures S11 by introducing a stimulus signal into the port of the device being tested, then measuring the reflected signal. The frequency at which this reflection occurs is then used to calculate S11.

S21 파라미터는 무엇인가요?

S21 is used to measure how well a device rejects signals that are passed through the input port and reflected on the output port. The power transferred from the first port to the next can be determined using the S21 parameter.

전파 및 채널 모델링은 무엇인가요?

Propagation and channel modeling is a technique for estimating the performance of wireless communications antennas and their effect on cell coverage.
The most significant parameters in propagation and channel modeling are path loss, Fresnel zone, path attenuation, and multipath fading.

스미스차트(Smith chart)는 무엇인가요?

A Smith chart is a graphic representation of a particular type of circuit operation. It shows the impedance, admittance, and conductance of an amplifier or other system component as it relates to frequency or voltage. In order to understand how a Smith chart operates, it is important to know the basics of transmission line theory.

전압정재파비(VSWR)란 무엇인가요?

Voltage standing wave ratio is the measure of the non-reactive voltage received at a point in space relative to cause by an AC source, thus representing the reflected power from the antenna source. It is typically specified as volts per meter (V/m) or millivolts per meter (mV/m).

벡터 네트워크 분석기는 위상을 어떻게 측정, 분석하나요?

A Vector Network Analyzer measures phase by introducing a stimulus signal into the port of the device being measured. The degree of phase shift is then noted. A separate calibration is used to determine the degree of phase shift when no stimulus signal is applied.

네트워크 분석기(VNA)는 진폭을 어떻게 측정하나요?

A VNA measures amplitude by introducing a stimulus signal into the port of the device, then measuring the strength. The magnitude of the reflected signal is then used to calculate amplitude.

진폭 특성이란 무엇인가요?

Amplitude properties include the amplitude at a particular frequency, amplitude ranges, amplitude linearity, and amplitude ratio measurements.

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