90 Degree Hybrid Coupler, Frequency 4~12GHz, Average Power 50W, SMA Female

A 90 degree hybrid coupler is a four port microwave passive device. When a signal is input from one of the ports, it evenly distributes the energy of the signal to two output ports (each half, i.e. -3dB), and there is a 90 degree phase difference between these two output signals. The other port is an isolated end, ideally without energy output. The following briefly introduces its characteristics and applications:

Key Features:

1. Ultra-wideband frequency coverage
Supports ultra-wideband operation from 4 to 12 GHz, perfectly covering C-band, X-band, and part of the Ku-band applications. A single component can replace multiple narrowband devices, simplifying system design and reducing inventory and costs.
2. High power handling capability
Excellent thermal and structural design enables stable handling of up to 50W average input power, meeting the demanding requirements of most high-power transmission links. It offers high reliability and long service life.
3. Precise 3dB quadrature coupling
Features accurate 90-degree phase difference (quadrature) and 3dB coupling. It exhibits excellent amplitude balance and low insertion loss, efficiently splitting the input signal into two output signals with equal amplitude and orthogonal phase.
4. High isolation and excellent port matching
The isolated port incorporates an internal matched load, providing high isolation and effectively reducing signal crosstalk between ports, ensuring system stability. All ports feature excellent voltage standing wave ratio (VSWR) and port matching, minimizing signal reflection to the greatest extent.
5. Standard SMA female interface
Equipped with SMA female (SMA-F) interfaces, compliant with industry standards. They offer convenient and reliable connectivity, allowing direct integration with most SMA male cables and adapters on the market.
6. Rugged military-grade quality
Constructed with a fully shielded metal cavity, it boasts a robust structure, excellent resistance to vibration and impact, and superior electromagnetic shielding characteristics. It delivers stable performance even in harsh environmental conditions.

Typical Applications:

1. Phased array radar systems: Serves as a core unit in Beamforming Networks (BFN), providing excitation signals with specific phase relationships to multiple antenna elements for electronic beam scanning.
2. High-power amplifier systems: Used in balanced amplifier designs for signal distribution and combination, enhancing system output power and reliability while improving input/output matching.
3. Signal modulation and demodulation: Functions as a quadrature signal generator for I/Q modulators and demodulators, making it a critical component in modern communication and radar navigation systems.
4. Test and measurement systems: Acts as a precision power divider, coupler, or phase reference device in microwave test platforms for signal distribution, combination, and phase measurement.
5. Electronic countermeasure (ECM) systems: Used for generating complex modulated signals and performing signal processing, meeting the broadband and high-power requirements of electronic warfare systems.

Qualwave Inc. provide broadband and high power 90 degree hybrid couplers in a wide range from 1.6MHz to 50GHz, widely used in multiple fields. This article introduces a 90 degree hybrid coupler with an average power of 50W for frequencies ranging from 4 to 12GHz.