GENERAL DESIGN CRITERIA: PHASE MATCHING
GENERAL DESIGN CRITERIA: PHASE MATCHING
Phase matching denotes two or more cable assemblies with the same phase length, or electrical length. Phase matching can be absolute, as compared to a predetermined value, or relative, where the assemblies are matched to each other. The physical lengths of cable assemblies may differ due to slight variations within cable stock and connectors. The tolerance of phase matching is frequency dependent, although cable length and type may affect the matching capabilities. Due to the inherent variations in cable and connector manufacturing and assembly, phase matching can be more an art than technology, and may involve a good amount of “tweaking.” Phase matching increases labor time, and thus cost.
Cable Assembly Guide Introduction
Cable Types and Specifications
Connector Types and Specifications
GENERAL DESIGN CRITERIA:
- Attenuation (Insertion Loss)
- Average Power Handling
- Capacitance
- Characteristic Impedance
- Cost and Quality Considerations
- Cut-Off Frequency
- Delay Time
- Dielectrics
- Electrical Length (Phase Stability)
- Intermodulation Distortion
- Maximum Operating Voltage (Peak Power)
- Mechanical & Environmental
- Operating Frequency
- Phase Matching
- Phase Tracking
- Temperature Limitations
- Velocity of Propagation
- VSWR/Return Loss