Coaxial Cables (RF)

Part Number	Description / PDF	Quantity
LMR-300-DB Times Microwave Systems	LMR-300 WATERTIGHT, BLACK PE JAC	0
9248 0103280 Belden	#18 PE/GIFHDPE SH FRPVC 1=3280'	0
1506A 8771000 Belden	#20 FFEP SH FLMRST	0
643948 010U500 Belden	COAX RG-59 PLENUM COAX	0
9815 0101000 Belden	TW PR #20 PE PE BRD PE	0
84142 0011000 Belden	#18H RG142 COAX	17000
1857A B591000 Belden	#22 FLDPE VLDPE PVC TRIAX	9000
734A1 0081000 Belden	#20 LDPE/FHDPE SH PVC	0
1614A 0031000 Belden	COAX 75 OHM RG6 18AWG	0
9532A1314-0 TE Connectivity Aerospace Defense and Marine	9532A1314-0	0
0024A0024-3 TE Connectivity Raychem Cable Protection	COAX CABLE-HIGH PERFO	0
179DTNH 0051000 Belden	#28H PE/GIFPE SH PPO	0
COA1740 Laird - Antennas	CABLE ACCY 174	0
0022E0111-90 TE Connectivity Aerospace Defense and Marine	0022E0111-90	0
7526A1318-0-L250 TE Connectivity Raychem Cable Protection	COAX CABLE-STANDARD P	0
1694A 0061000 Belden	#18 PE/GIFHDPE SH FR PVC	100000
83264 001500 Belden	#30 COAX M17/94-RG179	0
5020G3442-0 TE Connectivity Raychem Cable Protection	COAX CABLE-HIGH PERFO	0
8281 004500 Belden	75 OHM VIDEO COAX	0
6788AV 009250 Belden	6XRG59 MINI#25+2P22 FS CMP BP	0

Coaxial Cables (RF)

1. Overview

RF coaxial cables are cylindrical transmission lines composed of concentric conductors separated by dielectric materials. They enable efficient high-frequency signal transmission (typically above 100 kHz) with excellent noise immunity. These cables serve as critical infrastructure in telecommunications, broadcasting, aerospace, and test measurement systems where signal integrity is paramount.

2. Major Types and Functional Classification

Type	Functional Features	Application Examples
Rigid Coaxial Cable	Metallic outer conductor, fixed geometry	Fixed installations in broadcast transmitters
Semi-Rigid Cable	Formable but not bendable after installation	Microwave ovens, aerospace systems
Flexible Coaxial Cable	Multi-stranded conductors for bending	Test equipment, mobile communications
Low-Loss Foam Dielectric	PTFE foam dielectric reduces signal loss	5G base stations, satellite links
Triaxial Cable	Double shielding for EMI protection	Medical imaging equipment

3. Structure and Composition

Typical construction includes four layers:

Central Conductor: Solid or stranded copper/aluminum for signal transmission
Dielectric Insulator: PTFE, polyethylene, or foam materials maintaining uniform impedance
Shielding Layer: Braided copper/aluminum with foil wrap (85-100% coverage)
Outer Jacket: UV-resistant PVC or plenum-rated materials for environmental protection

4. Key Technical Parameters

Parameter	Typical Range	Significance
Characteristic Impedance	50 , 75 standards	Matches system impedance to prevent reflections
Attenuation	0.1-10 dB/100ft @1GHz	Determines maximum transmission distance
Frequency Range	DC to 40 GHz (typical)	Defines usable bandwidth
VSWR	1.1:1 to 2.0:1	Measures impedance matching quality
Power Handling	500W to 5kW peak	Limits maximum operational power

5. Application Fields

Telecommunications: 5G infrastructure, fiber-wireless integration
Broadcasting: TV/radio transmission lines
Military/Aerospace: Radar systems, avionics
Test & Measurement: Oscilloscope probes, signal analyzers
Industrial IoT: Sensor network backbones

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
CommScope	FSJ1-50A	Low-loss foam dielectric, 0-18GHz
Amphenol	RG-58U	General-purpose 50 cable
Times Microwave	LMR-400	Weather-resistant, 0-6GHz
Huber+Suhner	RFS1000	Heliax rigid line for base stations
Huawei	RF-35	5G massive MIMO solution

7. Selection Guidelines

Key considerations:

Frequency Requirements: Match cable's usable range with system operating frequency
Environmental Conditions: Outdoor cables require UV protection and temperature resistance (-40 C to +85 C)
Bending Radius: Minimum bend radius specification (typically 10 cable diameter)
Connectivity: Ensure compatibility with connectors (N-type, SMA, BNC)
Cost vs Performance: Balance loss characteristics against budget constraints

8. Industry Trends

Current development directions include:

High-Frequency Optimization: Supporting 6G terahertz band exploration
Nanodielectric Materials: Graphene-enhanced insulation for lower loss
Miniaturization: 0.8mm outer diameter cables for wearable devices
Smart Cables: Integrated sensors for real-time condition monitoring
Environmental Compliance: Halogen-free flame retardant (HFFR) jacket materials