Product Description
Introduction to RF Cables
1. Definition and Basic Characteristics
RF cables (radio frequency cables) are specialized cables designed to transmit radio frequency signals. RF (Radio Frequency) refers to electromagnetic waves in the frequency range of 300 kHz to 300 GHz. Their core function is to ensure stable transmission of high-frequency signals, and they are widely used in wireless communication, television broadcasting, satellite communication, radar systems, and more.
2. Structure and Materials
RF cables typically adopt a coaxial structure, consisting of the following components:
Inner Conductor: High-conductivity materials (e.g., copper or silver-plated copper) for signal transmission;
Insulation Layer: Low-loss materials like polyethylene (PE) or polytetrafluoroethylene (PTFE) to maintain dielectric stability;
Shielding Layer: Braided copper wire or aluminum foil to suppress electromagnetic interference (EMI);
Outer Jacket: PVC or other weather-resistant materials for physical protection and environmental isolation.
3. Impedance Characteristics and Types
50Ω Impedance: Commonly used in wireless communication and radar systems, suitable for high-frequency power transmission;
75Ω Impedance: Primarily employed in video transmission (e.g., cable TV, satellite signals), offering lower loss and better anti-interference performance.
4. Typical Applications
Signal connections between wireless base stations and antennas;
Signal distribution in cable TV networks;
Ground stations and receivers in satellite communication systems;
Microstrip lines or striplines in RF circuit boards (PCB designs).
5. Design Considerations and Technical Challenges
Transmission Line Type: Choice between microstrip lines (outer layer routing) or suspended striplines (inner layer routing) based on requirements;
Skin Effect: At high frequencies, current concentrates on the conductor surface, necessitating optimized conductor thickness to reduce resistance;
Impedance Matching: Achieve consistent characteristic impedance by controlling parameters like line width and dielectric layer thickness;
Electromagnetic Compatibility (EMC): Minimize stray capacitance/inductance to avoid signal reflection and resonance issues.
6. Advantages in Specific Scenarios
Anti-Interference Capability: Multi-layer shielding designs effectively suppress external electromagnetic noise;
High-Frequency Adaptability: 75Ω cables outperform traditional digital interfaces (e.g., HDMI in low-frequency bands) for video signal transmission;
Cost-Effectiveness: 75Ω cables are more economical than high-frequency specialty cables, making them ideal for large-scale deployments.
Summary
Product Parameters
1. General-Purpose Communication and Testing
RG-58
Impedance: 50Ω
Structure: Inner conductor made of tinned copper or copper-clad steel, outer diameter ≈5mm. Ideal for short-to-medium-range wireless communication (e.g., Wi-Fi modules, handheld devices).
Typical Attenuation: 24dB/100m (at 200MHz).
RG-59
Impedance: 75Ω
Application: Video signal transmission (e.g., CCTV systems). Outer diameter ≈6.15mm, cost-effective.
RG-174
Features: Ultra-thin (2.8mm diameter), copper-clad steel inner conductor. Suitable for high-frequency test equipment or space-constrained scenarios.
2. High-Power/High-Performance Applications
RG-213
Impedance: 50Ω
Design: Reinforced braided copper shielding, outer diameter ≈10.3mm. Supports high-power transmission (e.g., base station antennas, radar systems).
RG-405
High-Frequency Performance: Silver-plated copper conductor with PTFE insulation, operating up to tens of GHz. Used in satellite communications and microwave systems.
Attenuation: Low-loss design for precision test equipment.
RG-8
Power Handling: Outer diameter ≈10.4mm, designed for long-distance, high-power RF transmission (e.g., broadcast TV transmitters).
3. Specialized Scenarios
RG-142
High-Temperature Resistance: Dual shielding (aluminum foil + braided copper). Used in m ilitary navigation and aerospace equipment.
Connector Compatibility: Compatible with BNC, N-type connectors.
RG-316
Flexible Design: Thin diameter (≈3.6mm) with MCX connectors. Ideal for high-frequency jumpers in mobile devices.
RG-6/RG-11
Video-Optimized: 75Ω impedance, diameters ≈6.8mm (RG-6) and ≈10.3mm (RG-11). Designed for long-distance HD video transmission (e.g., CATV trunk lines).
RG Series Comparison
| Model |
Impedance |
Diameter (mm) |
Primary Applications |
Key Features |
| RG-58 |
50Ω |
≈5.0 |
Wireless comms, test equipment |
Short-medium range, cost-effective |
| RG-213 |
50Ω |
≈10.3 |
Base stations/radar systems |
High shielding strength |
| RG-405 |
50Ω |
≈6.8 |
Satellite/microwave systems |
High-frequency, low-loss, PTFE insulation |
| RG-6 |
75Ω |
≈6.8 |
CATV/video broadcasting |
Low attenuation (≈6.5dB/100m at 750MHz) |
| RG-142 |
50Ω |
≈5.0 |
M ilitary/aerospace |
High temp/resistance, vibration-proof |
Company Profile
Application
Certifications
Packaging & Shipping
FAQ
1. How can I get a quotation from you?
You can leave us message, and we will reply every message in time. Or you can also find our contact information on contact page.
2. Can I get samples before order?
Yes, of course. we can produce by your samples or technical drawings.
3. What is your delivery time ?
The time of delivery is usually around 1 month(1*40FT as usual). We can send out in 2 days, if it has stock.
4. What is your payment terms?
Our usual payment term is 30% deposite, and rest against B/L. L/C is also acceptatble. EXW, FOB, CFR, CIF, DDU.
5. How can you guarantee what I got will be good?
We are a factory with 100% pre-delivery inspection which guarantees quality.
6. How do you make our business long-term and good relationship?
We keep good quality and competitive prices to ensure our customers benefit ,We respect every customer as our friend and we sincerely do business and make friends with them. Please feel free to message us if you have any questions about us and our products.
7:What you can get from us?
Copper alloy wire,Silver plated wire(silver coated wire),Nickel plated wire,CCS wire & conductor,CCA wire & conductor,Nickel & Nickel alloy wire,Aluminum alloy wires,Tinned wires,Aramid Fiber,Microwave cable,PTFE cable,ETFE cable,Al flexible cable,EPR cable (07BN4-A-F),Solar cable according to standard 2PfG1169, EN50618, 2PfG2642, UL4703, EN cable (NA2XH) and so on
Audited Supplier 
){kind=link}