RF passive devices such as power splitters, couplers, bridges, and loads are the core of microwave communication systems, and choosing the right connectors is critical to ensuring signal transmission quality and system stability.
Connectors for these passive devices are categorized by three key metrics: RF/microwave frequency compatibility, structural design, and interface standards. For low-frequency applications (below 1 GHz), BNC connectors are the go-to option, thanks to their stable performance and cost-effectiveness, ideal for short-distance signal transmission in indoor test setups. In the 1–18 GHz mid-to-high frequency range, SMA connectors dominate the market with their superior impedance matching and broad frequency coverage, widely adopted in 5G base stations and radar test systems. When frequencies surpass 18 GHz, precision connectors like 2.92 mm (K-type) and 2.4 mm take center stage, delivering low insertion loss and high isolation in millimeter-wave bands, perfectly suited for aerospace and satellite communication scenarios.
Structurally, threaded connectors including SMA and N-type offer secure, vibration-resistant connections, making them a top pick for outdoor harsh environments. Snap-on connectors such as SMB and SMC, on the other hand, enable quick plug-and-unplug operations, which are commonly used in portable test instruments and indoor equipment requiring frequent disassembly. In terms of interface standards, globally recognized specifications like IEC and MIL-STD guarantee cross-brand compatibility of connectors, streamlining system integration and maintenance processes.
