Network Analyzer Calibration Apparatus with Universal RF Adaptors
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Solution Overview
Problem
Current calibration methods for network analyzers are time-consuming and require manual connection of standard impedances, limiting compatibility across different manufacturers and resulting in high financial costs due to the need for multiple electrically controlled calibration kits with various RF ports.
Innovation Solution
A calibration apparatus with a communication portion, signal input portion, RF ports, an impedance circuit portion, and a controller that generates calibration data using adaptor and standard impedance characteristic data, allowing for compatibility with various network analyzers and reducing the need for multiple calibration kits by using adaptors and external memory cards for data storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual connection of standard impedances is used for calibration, then calibration can be performed, but the process becomes time-consuming and labor-intensive
Solution Approach 1:
The patent replaces the manual mechanical connection system with an electrically controlled switching system. The calibration kit uses electronic switches to automatically connect different standard impedances to the network analyzer ports based on control signals, eliminating the need for manual physical connection while reducing calibration time and operational complexity
Solution Approach 2:
The calibration kit performs self-service by automatically selecting and connecting the required standard impedances based on calibration requirements. The system uses internal control logic to manage the switching between different impedance standards without requiring external manual intervention, thereby reducing both time and operational effort
2Extent of automation
If electrically controlled calibration kits from the same manufacturer are used, then automation is achieved, but compatibility with other manufacturers' network analyzers is lost
Solution Approach 1:
The calibration kit achieves universality by incorporating multiple types of RF ports (coaxial, waveguide, and other connector types) within a single device. This allows the same calibration kit to interface with network analyzers from different manufacturers with various connector types, maintaining automation while improving compatibility and versatility
Solution Approach 2:
The calibration kit is segmented into multiple independent port sections, each capable of supporting different connector types. This modular segmentation allows the system to adapt to different network analyzer interfaces without requiring complete redesign, thereby maintaining automation across diverse manufacturer platforms
3Adaptability or versatility
If multiple electrically controlled calibration kits with various RF ports are used for different manufacturers, then compatibility is achieved, but financial cost increases
Solution Approach 1:
The patent merges multiple calibration kit functionalities into a single unified device. By integrating support for various RF port types (coaxial, waveguide, and other connectors) within one calibration kit, the system eliminates the need to purchase and maintain multiple separate calibration kits, thereby reducing overall quantity and financial cost while maintaining compatibility across different manufacturers
Data Source
AI summary
Disclosed is a calibration apparatus for a network analyzer, including a communication portion configured to communicate with the network analyzer to input or output data necessary for calibration, a signal input portion configured to receive a signal notifying a start of the calibration input, at least one radio frequency (RF) port for being connected to the network analyzer, at least one adaptor configured to connect the RF port with the network analyzer, an impedance circuit portion connected to the RF port and configured to include at least one standard impedance, and a controller portion configured to generate calibration data using adaptor characteristic data corresponding to electrical characteristic of the adaptor, measurement data obtained by connecting each of such standard impedances with the network analyzer, and standard impedance characteristic data corresponding to the standard impedance.