KYOCERA AVX’s has expanded its 3dB 90° hybrid couplers – the DB0402 adds a miniature 0402 size package to the family which already includes the DB0603, and DB0805 series – engineered to meet the growing demands of high-frequency wireless systems across industrial, automotive, telecommunications, and telemetry sectors. As wireless technologies continue to advance at pace, the need for components that can deliver consistent, high-frequency performance in ever-smaller footprints has never been greater. The DB series from KYOCERA AVX answers this call with a robust, space-saving solution that doesn’t compromise on power or precision.
These hybrid couplers are special four-port directional couplers designed to split input signals into two equal-amplitude outputs with a 90° phase shift, enabling precise signal control and monitoring in compact RF systems. With their miniature footprints, robust construction, and excellent electrical performance, the DB series couplers are ideal for next-generation wireless infrastructure and compact embedded designs.
DB0402 Series – Ultra-Miniature, High-Precision
The DB0402 3dB LGA Coupler is based on thin-film multilayer technology. The technology provides a miniature part with excellent high frequency performance and rugged construction for reliable automatic assembly. The DB0402 Coupler is offered in a variety frequency bands compatible with various types of high frequency wireless systems.
The DB0402 series is the smallest in the lineup, measuring just 0.040” x 0.023” x 0.014”. Despite its size, it delivers exceptional performance across 3,000–4,100MHz, with:
- Low insertion loss: -0.5dB typical
- High isolation and phase balance: 2° typical
- Power handling: 1W continuous
- RoHS and IATF compliant
Its compact form factor and compatibility with automated assembly make it ideal for space-constrained applications such as mobile devices, GPS modules, and compact base stations.
DB0603 Series – Versatile and Rugged
The DB0603N 3dB 90° Coupler is based on thin-film multilayer technology. The technology provides a miniature part with excellent high frequency performance and rugged construction for reliable automatic assembly. The RFAP LGA 3dB 90° Coupler is offered in a variety of frequency bands compatible with various types of high frequency wireless systems.
The DB0603N series builds on the DB0402’s strengths with a slightly larger footprint (0.060” x 0.030”) and broader frequency coverage from 2GHz to 6GHz. It offers:
- Insertion loss: <0.9dB
- Isolation: >10dB
- Amplitude balance: ±1dB
- Phase balance: ±3°
- Power handling: up to 10W
Typical applications is balanced amplifiers and signal distribution in wireless communications, LANs, GPS, vehicle location systems, and signal distribution networks. Its rugged multilayer thin-film construction ensures reliable performance in harsh environments and high-density PCBs.
DB0805 Series – High Power, Broad Compatibility
The DB0805 SMD 3dB 90° Coupler is based on thin-film multilayer technology. The technology provides a miniature part with excellent high frequency performance and rugged construction for reliable automatic assembly. The ITF 3dB 90° Coupler is offered in a variety of frequency bands compatible with various types of high frequency wireless systems.
The DB0805 series is designed for applications requiring higher power handling and broader frequency compatibility. With a footprint of 0.080” x 0.050”, it supports:
- Wideband operation: up to 6GHz
- High power handling
- Excellent thermal stability
- Low parasitics and high repeatability
This makes the DB0805 ideal for 5G infrastructure, SATCOM, RF amplifiers, and MIMO antenna systems where performance and reliability are critical
The DB series of 3dB 90° hybrid couplers exemplifies KYOCERA AVX’s dedication to pushing the boundaries of RF component design. Whether you’re developing infrastructure for next-gen wireless networks or designing compact, high-performance modules for industrial or automotive use, these hybrid couplers offer a compelling combination of performance, size, and ease of integration.
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