Unternehmensnachrichten über 2025 Guide Selecting Network Analyzers and Sparameters

When electronic engineers need to evaluate complex high-frequency circuit characteristics, a network analyzer becomes their most essential tool. However, with numerous brands and models available in the market, how can professionals make an informed decision? This article examines network analyzer selection criteria, analyzes critical technical specifications, and reviews leading manufacturers to facilitate efficient decision-decision-making.

A network analyzer is a precision instrument designed to evaluate the characteristics of device-under-test (DUT) circuit networks. By measuring parameters such as input signal attenuation and impedance, it provides comprehensive performance analysis. In high-frequency applications particularly, network analyzers play a vital role in assessing transmission equipment and electronic components.

The measurement results are typically presented as S-parameters (scattering parameters), which serve as fundamental indicators for high-frequency circuit network analysis. The four primary S-parameters include:

• S11 (Forward Reflection Coefficient): Indicates signal reflection at the input port. Lower values represent better signal matching and reduced reflection.
• S21 (Forward Transmission Coefficient): Measures signal transmission efficiency from input to output port. Higher values indicate lower transmission loss.
• S12 (Reverse Transmission Coefficient): Evaluates signal transmission from output to input port, commonly used to assess amplifier isolation.
• S22 (Reverse Reflection Coefficient): Reflects signal reflection at the output port. Lower values signify better signal matching and reduced reflection.

Understanding S-parameters is crucial for accurate DUT performance evaluation. Through S-parameter analysis, engineers can assess critical circuit characteristics including impedance matching, transmission loss, and isolation, enabling optimized circuit design.

According to industry rankings, the most prominent network analyzer manufacturers include Pico Technology Ltd., Takitec Corporation, and Keysight Technologies. These companies maintain leading positions in network analyzer technology, offering products distinguished by superior performance, precision, and reliability. Selecting instruments from established manufacturers ensures better technical support and after-sales service.

When selecting a network analyzer, beyond manufacturer reputation, engineers should consider specific application requirements. Key parameters include frequency range, dynamic range, measurement accuracy, and number of ports. Additional factors such as software functionality, ease of use, and cost should also be evaluated. A comprehensive assessment of these elements enables professionals to select the most suitable network analyzer for their needs, ultimately improving work efficiency and measurement accuracy.