What a Combiner in RF? Keenlion’s 703-2689.9 MHz 4-Band RF Combiner Delivers ≤2 dB Loss

What a combiner in RF? It is a passive device that merges several frequency bands into one feed line while maintaining isolation. Keenlion’s latest 703-2689.9 MHz 4-band RF Combiner answers that question with laboratory-verified Insertion Loss ≤2.0 dB, Ripple ≤1.5:1 dB and Return Loss ≥18 dB across all four cellular windows.

Performance Highlights

The RF Combiner covers 703–803 MHz, 820–960 MHz, 1710–1885 MHz and 2496–2689.9 MHz with individual cavity paths. Each RF Combiner section is silver-plated and hand-tuned to guarantee Insertion Loss ≤2.0 dB at band edges and Ripple ≤1.5:1 dB inside the passband. Return Loss ≥18 dB ensures minimal reflections, keeping the RF Combiner stable under 50 Ω systems.

Mechanical Excellence

Machined from aerospace aluminum, the RF Combiner is IP66 sealed and qualified for -40 °C to +85 °C operation. Internal dividers deliver ≥60 dB isolation between bands, preventing inter-band interference. The compact RF Combiner footprint (193× 139 × 43 mm) saves tower space and reduces wind load.

Factory Advantages

Keenlion’s 20-year, ISO-9001 facility offers rapid customization of RF Combiner frequency splits, connector types and mounting brackets. Samples ship in 48 hours; volume lead time is seven days. Every RF Combiner undergoes 100 % VNA testing to certify Insertion Loss ≤2.0 dB, Ripple ≤1.5:1 dB and Return Loss ≥18 dB before dispatch.

Applications

Deploy this RF Combiner in:

5G NR infrastructure

Multi-carrier cellular systems

Public safety communication networks

Tactical radio repeaters

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 RF Combiner 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.