Dual Directional Coupler, 0.1~30MHz, 500W

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 a working frequency band of 0.1~30MHz, an average input power processing capability of 500W, 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 40dB and 50dB 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. High directivity and low insertion loss: In the low frequency range of 0.1~30MHz, the directivity is as low as 30dB and the insertion loss is as low as 0.1dB. High directivity means that the coupler can clearly distinguish between forward and reverse waves, effectively suppressing cross coupling interference and making the measurement of reflected power more accurate. Low insertion loss ensures the transmission efficiency of the main power and reduces energy waste.

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 0.1~30MHz, 500W dual directional coupler.