Dual directional coupler is a precise passive microwave/RF device. This product provides high-performance solutions for fields such as broadcast communication, high-power RF testing, scientific research, and EMC testing with its excellent ultra wide operating frequency band of 80MHz to 1GHz, average input power processing capability of up to 500 watts, and excellent directionality. The following briefly introduces its characteristics and applications:
Characteristics:
1. High power and high reliability: Adopting a special heat dissipation design and low loss transmission line structure, it ensures low insertion loss and excellent temperature stability even when operating at 500W full power, ensuring continuous and stable operation of the system.
2. High coupling: Provides precise coupling, meaning only one-ten-thousandth of the energy is sampled from the main channel, minimally impacting the main system signal transmission, making it ideal for high-power, high-precision monitoring applications.
3. Precise monitoring and system protection: High directionality enables it to capture small changes in reflected power in a timely manner, providing critical early warning signals for power amplifiers, effectively preventing equipment damage caused by antenna mismatch and other faults, and reducing downtime risks.
Applications:
1. Precise monitoring and system protection: High directionality enables it to capture small changes in reflected power in a timely manner, providing critical early warning signals for power amplifiers, effectively preventing equipment damage caused by antenna mismatch and other faults, and reducing downtime risks.
2. RF generation and testing system: Used as a precise power control and reflection protection unit in EMC/EMI testing, RF heating, plasma generation, and other systems.
3. Communication base station: Used for monitoring and protecting the transmission link of high-power macro base stations.
4. Scientific research and military applications: Plays an important role in scenarios such as radar and particle accelerators that require high-power, wideband signal monitoring.
Qualwave Inc. provide broadband high-power dual directional couplers with frequencies ranging from DC to 67GHz, widely used in amplifiers, broadcasting, laboratory testing, communication, and other applications. This article introduces a 80MHz~1GHz, 500W dual directional coupler.
1. Electrical Characteristics
Frequency: 0.08~1GHz
Insertion Loss: 0.3dB max.
Coupling: 40±1dB, 50±1.5dB, 60±1.5dB
Directivity: 20dB min.
VSWR: 1.2 max. (1.5@40dB Coupling)
Impedance: 50Ω
Average Power: 500W
2. Mechanical Properties
Size*1: 105*54*26mm
4.134*2.126*1.024in
RF Connectors: N Female
Coupling Connectors: N Female, SMA Female
Mounting: 4-Ф5mm through-hole
[1] Exclude connectors.
3. Outline Drawings
Unit: mm [in]
Tolerance: ±0.5mm [±0.02in]
4. Environmental
Operation Temperature: -40~+85℃
Non-operating Temperature: -55~+100°C
5. How To Order
QDDC-80-1000-K5-X-Y
X: Coupling (40, 50, 60dB - Outline A, B)
Y: Connector type
Connector naming rules:
NS - N Female & SMA Female (Outline A)
N - N Female (Outline B)
Examples:
To order a dual directional coupler, 0.08~1GHz, 500W, 40dB, N Female & SMA Female, specify QDDC-80-1000-K5-40-NS.
Contact us for detailed specifications and sample support! As a leading supplier in high-frequency electronics, we specialize in the R&D and production of high-performance RF/microwave components, committed to delivering innovative solutions for global customers.
Post time: Jul-31-2026
+86-28-6115-4929
