Product introduction
Product introduction
SMA straight head public transfer IPEX generation
Wire: 1.37mm micro semi-flexive wire
Interface type: SMA&IPEX
Wire length: 5cm ~200cm (length can be customized)
1.37mm micro semi-flex wire parameter description
1. Core parameters
Parameter | Typical value | Standard |
Characteristic impedance | 50Ω | Full frequency band fluctuation <±1.5Ω |
Outside diameter | 1.37±0.03mm | One of the industry's thinnest 50Ω RF cable |
Central conductor | Silver-plated copper alloy | Diameter 0.42mm (AWG 37), DC resistance ≤1.2 Ω/m |
Insulating materials | Foamed polytetrafluoroethylene (ePTFE) | Loss angle tangent ≤0.0005 (40 GHz) |
Shielding layer | Seamless silver-plated copper tube | 360° full coverage shielding, efficiency ≥110 dB @40 GHz |
Sheath | Transparent fluororubber (FKM) |
|
Frequency range | DC ~ 60 GHz |
|
attenuation | Typical values: • 10 GHz: 1.8 dB/m • 40 GHz: 6.2 dB/m • 60 GHz: 9.5 dB/m |
25% lower than conventional PTFE wire (@40 GHz) |
Voltage VSWR |
| Requires use with 0.8mm connectors |
Minimum bend radius | Dynamic: 5 ×OD (6.85 mm) Static: 3 ×OD (4.11 mm) | Bending life> 10,000 cycles (90° bending) |
Phase stability | ±0.5°/m @40 GHz |
|
Maximum operating voltage | 300 Vrms | Breakdown voltage ≥ 1,500 V |
tensile strength | ≥ 35 N |
|
2. Performance comparison
characteristic | 1.37mm line | 1.13mm wire | advantage |
40GHz loss | 6.2dB/m | 7.8dB/m | 21% |
Minimum bend radius | 4.11mm (static) | 3.39mm (static) | Mechanical Strength 18% |
tensile strength | 35N | 25N | 40% |
60GHz | 1.35： 1 | 1.50： 1 | Impedance matching is better |
3. Typical applicable scenarios
Medical devices: Endoscope high-frequency signal transmission (instead of traditional copper cables, bandwidth ↑5 times)
Medical Devices: Implantable Sensor Feeders (Biocompatible Sheath Certified by ISO 10993) mmWave Communications: 5G mmWave AAU Antenna Internal Jumpers (Support n257/n258 bands)
mmWave communication: 60 GHz WiGig devices (e.g., VR headset wireless modules)
Military electronics: Micro UAV image transmission system (50% weight reduction vs RG178)
Military electronics: Individual radar high-frequency connection (bending radius <5mm)
High-density integration: PCB RF front end → 1.37mm wire → mmWave antenna
High-density integration: LiDAR module → 1.37mm line→ signal processor
Selection guide
1. Specifications and characteristics of commonly adapted cables
Model | Outside diameter | Central conductor | 3GHz loss | peculiarity | Applicable scenarios |
RG-174 | 2.8mm | 7*0.16mm | 0.82dB/m | Flexible, easy to install, and low cost | Consumer electronics |
RG-316 | 2.6mm | 7*0.1mm | 0.84dB/m | High temperature resistance, military industry standards | High temperature environment, test instruments |
Micro foamed PE wire | 1.5~2.2mm | 0.3~0.5mm | 0.50dB/m | High frequency loss is low | 5G/Wi-Fi |
Semi-steel wire | 1.0~3.0mm | Solid copper | 0.30dB/m | Relatively stable and good shielding | Test calibration, mmWave front |
2. Comparison of key parameters and selection logic
2.1 Electrical performance priority
parameter | RG-174 | RG-316 | Foamed PE wire | effect |
Attenuation @6GHz | 1.8dBm/m | 1.7dBm/m | 0.9dBm/m | High-frequency signal integrity |
Shielding efficiency | 70dB | 90dB | >90dB | Anti-interference ability |
Impedance stability | ±3Ω | ±2Ω | ± 1Ω | Reflected signal suppression |
2.2 Mechanical and environmental adaptability
parameter | RG-174 | RG-316 | Foamed PE wire |
Minimum bend radius | 15mm | 25mm | 30mm |
Temperature range | -40℃ ~ +85℃ | -65℃ ~ +200℃ | -50℃ ~ +85℃ |
tensile strength | medium | Tall | Low (easily damaged) |
3. Typical application scenarios are matched with cables
3.1 Consumer Electronics (Bluetooth/Wi-Fi)
Cable: RG-174
Reason: Cost sensitive, frequency ≤ 5GHz, short length (<0.3m) and controllable loss.
3.2 Test Instrument Jumper (Vector Network Analyzer)
Cable: RG-316 or low-loss foam cable (e.g. Times LMR-200)
Reason: It needs to be resistant to plugging and unplugging, low loss (high calibration accuracy requirements).
3.3 Vehicle radar/5G small cell station
Cable: PTFE insulated foam wire (e.g. Gore G-FLEX 150)
Reason: 6~24GHz low loss requirements, outer diameter ≤2mm for easy wiring.
3.4 Military equipment
Cable: RG-316 (Mi-Label MIL-DTL-17)
Reason: Resistant to extreme temperatures, vibration, and high shielding requirements.
4. Supplementary instructions
4.1 Outer diameter mismatch: MCX connectors usually support 1.0~3.0mm wire diameter, which needs to be customized beyond the range (such as micro wires require a dedicated MCX head).
4.2 High frequency loss: RG-174 has 2 times higher loss than foamed PE wire at 6GHz, and is avoided for long-distance transmission.
4.3 Phase stability: For phase-sensitive applications (phased arrays), prefer semi-rigid wires or phase-stabilized cables (such as Huber+Suhner S100).
4.4 Connector Grade: Gold-plated contacts MCX (non-nickel plated) are selected to ensure a > 500 plugging and unmating life.
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SMA straight head public transfer IPEX generation
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