A 3dB hybrid coupler is a passive four-port device that splits input power equally while maintaining a 90° phase difference between outputs. The 700MHz-4200MHz 3dB Hybrid Coupler from Keenlion performs this function across the entire cellular, LTE and 5G spectrum, making the 3dB Hybrid Coupler essential for beam-forming, QPSK modulation and coherent signal combining.

Measured RF Performance
Each 700MHz-4200MHz 3dB Hybrid Coupler is verified on a 50 GHz VNA. Insertion loss is ≤1.5 dB, VSWR ≤1.4:1 and isolation ≥18 dB across 700-4200 MHz. Phase balance remains within ±5° and amplitude balance within ±0.5 dB, ensuring the 3dB Hybrid Coupler supports vector-combining applications without vector error. Forward power rating is 30 W and reverse power 2 W, so the 3dB Hybrid Coupler survives typical PA and antenna mismatch conditions.

Mechanical & Environmental Ruggedness
The 700MHz-4200MHz 3dB Hybrid Coupler is milled from one-piece aluminium, sand-blasted . SMA-Female connectors are torque-sealed; the 3dB Hybrid Coupler operates from -35 °C to +70 °C and can be wall-mounted with two M2 holes. Surface finish is sand-blasting guide compliant, giving the 3dB Hybrid Coupler stable contact resistance.

Factory Edge – Why Keenlion
• 20-year Chengdu plant machines, plates, tunes and tests every 3dB Hybrid Coupler under one roof • 7-day prototype lead, 21-day volume schedule • Electrical balance verified on signed VNA plot • Competitive factory prices with no distributor margin • Free samples shipped in 48 hours • Professional after-sales support for life of the 3dB Hybrid Coupler

Market Applications
When engineers ask “What is a 3dB hybrid coupler?”, they can point to the 700MHz-4200MHz 3dB Hybrid Coupler in 5G beam-forming networks, X-band radar front-ends, test-lab signal splitting and DAS head-ends. Email sales@keenlion.com for data sheets, CAD files and factory pricing on the 3dB Hybrid Coupler—ship tomorrow, lock your quadrature today.

Si Chuan Keenlion Microwave a large selection in narrowband and broadband configurations, covering frequencies from 0.5 to 50 GHz. They are designed to handle from 10 to 30 watts input power in a 50-ohm transmission system. Microstrip or stripline designs are utilized, and optimized for best performance.

We can also customize 3dB hybrid coupler according to your requirements. You can enter the customization page to provide the specifications you need.
https://www.keenlion.com/customization/
E-mail:
sales@keenlion.com
tom@keenlion.com
Sichuan Keenlion Microwave Technology Co., Ltd.

3dB hybrid coupler