RF Match Unit Characterization - Case Study

Octiv sensor reduces RF match unit characterization process from 2 days to 15 minutes, reducing labour and overhead costs


In the field of radio frequency systems, characterizing RF match units’ impedance range is a critical step to ensure proper functioning and optimal performance. Traditionally, this process has been laborious and time-consuming, involving manual data collection using a Vector Network Analyzer (VNA). However, the introduction of the Impedans Octiv unit offers a game-changing solution that significantly reduces the time required for impedance characterization. This case study presents the successful application of the Impedans Octiv to characterize an Astech 10RA AMN matching network unit, showcasing the dramatic time savings achieved and its subsequent impact on labor and overhead costs.


The primary objective of this case study was to evaluate the efficiency of the Impedans Octiv in reducing the time and resources required for impedance characterization. Specifically, we aimed to compare the traditional manual method, which typically takes up to 2 days, with the Impedans Octiv method, expected to be significantly faster. The focus was on demonstrating how the Impedans Octiv’s speed accelerates the process, leading to lower labor costs, reduced overhead expenses, and quicker activation of the characterized devices.

RF Voltage Current Probe - Octiv Mono 2.0
Impedans Octiv Product
Impedans software gathering data


RF Match Unit Selection: The Astech 10RA AMN matching network unit was chosen as the subject for impedance characterization.

Theoretical Method: An equivalent circuit model was used to predict the range of impedances covered by the match unit.

Manual Method: The conventional approach involved manually adjusting the match unit’s load and tune motors while recording VNA readings at various positions to map the impedance range.

Impedans Octiv Method: The Impedans Octiv unit was employed to enable real-time impedance monitoring during the adjustment process, continuously capturing data as the match unit was manipulated.

Data Analysis: The data obtained through both methods were analyzed and compared to assess the Impedans Octiv’s accuracy and efficiency..



The results of the case study were striking. The data collected using the Impedans Octiv closely matched the manual VNA data, confirming the Impedans Octiv’s reliability for impedance characterization. Moreover, the Impedans Octiv method significantly reduced the time required for the entire process, completing impedance characterization in just 15 minutes.

Smith chart showing theoretical rf match unit characterization
Theoretical impedance range of match unit
Smith chart showing rf match unit characterization captured by Vector Network Analyzer (VNA)
Impedance range of match unit measured with VNA over 2 days
Smith chart showing rf match unit characterization captured by impedans octiv VI probe
Impedance range of match unit measured with Octiv in 15 minutes


The Impedans Octiv’s efficient impedance characterization process had several noteworthy impacts:

Lower Labor Costs: With the Impedans Octiv method taking only 15 minutes, compared to the traditional 2-day manual method, the labor hours needed for characterization were dramatically reduced. This resulted in substantial cost savings in terms of labor expenses.

Reduced Overhead Expenses: The shorter characterization time directly translated into reduced overhead expenses. With fewer resources and equipment utilization over a shorter period, the overall operating costs decreased.

Quicker Device Activation: By expediting the impedance characterization process, the Impedans Octiv enabled quicker device activation and deployment. This was particularly advantageous in time-sensitive projects or production scenarios where faster activation means accelerated time to market.



The Impedans Octiv’s application on the Astech 10RA AMN matching network unit demonstrated a remarkable reduction in impedance characterization time. This resulted in lower labor and overhead costs for the customer and facilitated quicker device activation. The customer has now applied this as their best known method for RF match characterization company wide.

The Impedans Octiv’s efficiency in capturing impedance data ensures that RF match makers, repair shops, and end users can now streamline their processes, achieve cost savings, and get their devices active sooner, ultimately improving productivity and operational efficiency.

RF voltage-current (VI) Probes

Impedans RF Voltage Current Probe - Octiv Poly 2.0

Best for: RF Calibration, RF Parameters, Live Process Monitoring, Fault Detection & Classification

Measures: RF Voltage, Current, Phase, Power and Impedance of the fundamental and harmonic frequencies. Also measures RF waveform and ion flux

If you have questions about what product is most suited to your process design needs

Click here to CONTACT US

We’ll be happy to have a discussion and see how we can help you!