Directional Coupler 20dB N Jack 700-2700MHz 200W RF Tap RFS-0727-20

Product Description

Part Number: RFS-0727-20
Type: Directional Coupler / RF Tap / Signal Tap
Coupling: 20dB ±1.1dB
Frequency Range: 700-2700 MHz (usable from 600 MHz)
Connectors: N Jack (female) × 4
Power Rating: 200W
Impedance: 50Ω

This directional coupler N jack 20dB 700MHz to 2700MHz—also referred to as a 20dB RF tap or signal tap—provides precision signal sampling for distributed antenna systems (DAS), cell phone signal booster installations, and RF test applications. The wideband frequency coverage supports all major 2G, 3G, 4G, and LTE cellular bands used across UK and European mobile networks, making it ideal for multi-carrier in-building wireless deployments.

Why Choose a 20dB Coupler?

The 20dB coupling value extracts approximately 1% of the input power to the coupled port—perfect for signal monitoring without significantly affecting the main transmission path. In cell phone booster systems with multiple interior antennas, a 20dB directional coupler (or tap) helps balance RF power distribution when uneven signal splitting is required. The coupled port feeds a low-power branch while the through port delivers most signal to longer cable runs where greater loss compensation is needed.

Exceptionally Low Insertion Loss

At just 0.2dB insertion loss (including 0.1dB coupling contribution), this RF coupler outperforms many competitors rated at 0.4-0.6dB. In DAS installations where every decibel counts, this translates to better signal coverage and reduced amplifier burden.

Technical Specifications

• Coupling: 20dB ±1.1dB
• Frequency Range: 700-2700 MHz (specified), 600-2700 MHz (usable)
• Insertion Loss: 0.2dB (includes 0.1dB coupling loss)
• Isolation: ≥20dB
• VSWR: ≤1.25:1
• Power Rating: 200W
• Impedance: 50Ω
• Operating Temperature: -35°C to +125°C
• Connectors: N Jack (female) on all ports
• Dimensions: 156 × 63 × 16.5 mm
• Colour: Grey

Typical Applications

• Distributed Antenna Systems (DAS) for in-building cellular coverage
• Cell phone signal booster and repeater installations
• Mobile infrastructure and base station monitoring
• RF power sampling and forward/reflected power measurement
• 4G LTE system testing and commissioning
• Signal level balancing in multi-antenna booster systems
• Wireless communication test instrumentation
• EMC testing and RF laboratory applications

Cellular Band Coverage

The 700-2700 MHz frequency range covers all major UK and European cellular bands:

• 700 MHz – LTE Band 28 (5G refarming)
• 800 MHz – LTE Band 20 (4G primary)
• 900 MHz – GSM/UMTS Band 8 (2G/3G)
• 1800 MHz – GSM/LTE Band 3 (2G/4G)
• 2100 MHz – UMTS Band 1 (3G primary)
• 2600 MHz – LTE Band 7 (4G capacity)

Installation Notes

This directional coupler features four N-female (jack) ports and connects directly to standard 50Ω coaxial cables such as LMR-400, CNT-400, or equivalent low-loss feedlines commonly used in signal booster systems. The N-type interface ensures reliable, weatherproof connections suitable for both indoor and outdoor installations within the -35°C to +125°C operating range.

Download Datasheet with Performance Plots

For other coupling values (5dB, 6dB, 10dB, 15dB, 30dB) and frequency ranges, see our full range of directional couplers and splitters.