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EMC Test Solutions

Microwave Passive Components

Power Dividers, Combiners, and Filters from VLF to 40GHz

Routing and conditioning RF signal power between amplifiers, antennas, and test equipment — without adding active gain or introducing unwanted noise — is a job for passive components, and getting this connective infrastructure right matters just as much to overall test system performance as the active amplifiers and sources it connects. This range covers the power dividers, combiners, couplers, and filters that perform exactly this routing and conditioning role.

Power dividers and combiners are available across waveguide, radial, series-feed, and hybrid topologies, spanning VLF through 40GHz — different topologies suit different frequency ranges and power-handling requirements, and having multiple types available lets the right topology be matched to the specific application rather than forcing one design to cover an unsuitable frequency or power range. Broadband filters handle band selection, isolating a desired frequency range from unwanted signals, while couplers provide signal sampling for monitoring and protection purposes similar to their role elsewhere in an RF chain.

Beyond dividers, combiners, and filters, the full RFlight passive component catalogue extends to attenuators, isolators, circulators, and connectors, available in custom and OEM configurations — giving a system integrator access to the complete set of passive building blocks an RF test system or custom RF chain typically requires.

Frequently Asked Questions

Why are multiple power divider/combiner topologies (waveguide, radial, series-feed, hybrid) offered rather than one universal design?

Different topologies have different strengths across frequency range, power handling, and physical size — a topology well suited to VLF or low-microwave frequencies may not scale efficiently to 40GHz, and vice versa. Offering multiple topologies lets the component actually match the application's frequency and power requirements rather than compromising with a one-size-fits-all design.

What's the difference between an isolator and a circulator in this passive component range?

Both are non-reciprocal devices that control signal direction, but an isolator specifically blocks reflected signal from returning to a source (protecting sensitive equipment from reflections), while a circulator routes signal between multiple ports in a defined sequence — both serve protective and routing functions in an RF chain, but for different specific purposes.

Are custom or OEM configurations available for these components?

Yes — beyond the standard catalogue, custom and OEM configurations are available across the RFlight passive component range, useful where a standard part doesn't exactly match a specific system integration requirement.

RFlight Broadband Coupler — Microwave Passive Components
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Radial Power Dividers/Combiners
Radial Power Dividers/Combiners
Splits or combines RF power across multiple ports in a radial arrangement, from VHF through 18GHz, in power ratings from 80W up to 5000W.
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ModelFrequencyPower 
CB-00810-1:4-5000-15/8F/L29F80MHz–1GHz≤5000WEnquire
CB-2040-1:8-1000-NF/L29F2–4GHz≤1000WEnquire
CB-20180-1:8-80-SMAF2–18GHz≤80WEnquire
VLF/VHF Power Dividers/Combiners
VLF/VHF Power Dividers/Combiners
Low-frequency (0.01–100MHz) power splitting and combining for VLF/VHF RF systems, from 300W up to 5000W.
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ModelFrequencyPower 
CB-10k01-1:4-5000-L29F0.01–100MHz≤5000WEnquire
CB-10k01-1:4-2000-L29F/NF0.01–100MHz≤2000WEnquire
CB-10k01-1:2-300-NF0.01–100MHz≤300WEnquire
Broadband Couplers
Broadband Couplers
Directional couplers for sampling forward/reflected power across a wide frequency range, from 50W up to 3500W handling.
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ModelFrequencyPower 
MSX-00810-50dB-1-5/8F/NF-3500W80MHz–1GHz≤3500WEnquire
MSX-1040-40dB-SMAF-50W1–4GHz≤50WEnquire
Waveguide Power Dividers/Combiners
Waveguide Power Dividers/Combiners
High-frequency waveguide-interface power dividers for millimetre-wave systems, up to 40GHz.
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ModelFrequencyPower 
CB-265400-1:8-500-BJ32026.5–40GHz≤500WEnquire
CB-265400-1:2-500-BJ32026.5–40GHz≤500WEnquire
CB-60180-1:4-500-WRD5006–18GHz≤400WEnquire
Broadband Filters
Broadband Filters
Bandpass filters for removing out-of-band signals from RF test chains, up to 300W handling.
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ModelFrequencyPower 
BPF-2040-300-NF2–4GHz≤300WEnquire
BPF-1025-100-SMAF1–2.5GHz≤100WEnquire
Hybrid Couplers/Combiners
Hybrid Couplers/Combiners
90°/180° hybrid couplers for combining or splitting signals with defined phase relationships, from 50W up to 300W.
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ModelFrequencyPower 
CB-0760-1:2-300-NF700MHz–6GHz≤300WEnquire
CB-1040-1:2-100-SMD1–4GHz≤100WEnquire
CB-1060-1:4-50-MS1–6GHz≤50WEnquire
Series-Feed Combiners
Series-Feed Combiners
Combines multiple amplifier outputs in series feed configuration for cellular/telecom band applications, up to 200W.
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ModelFrequencyPower 
CB-2327-1:6-200-MS2.3–2.7GHz≤200WEnquire
CB-1822-1:6-200-NF/SMAF1.8–2.2GHz≤200WEnquire
Full Passive Component Catalogs
Full Passive Component Catalogs
Beyond the categories above, RFlight's full passive component lines cover custom-spec and general-purpose microwave requirements including attenuators, isolators, circulators, and connectors up to 40GHz+, in custom and OEM configurations.
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Related Reading

Where This Fits

Wherever your setup includes an amplifier, antenna, or switch matrix, these components are what actually connect them — splitting a signal to feed multiple antennas, combining sources, or filtering harmonics out of an amplifier's output before it reaches the antenna.

They're rarely bought as a standalone purchase; you'll typically add these once you know the frequency range and power handling of the active equipment (from RF & EMC Power Amplifiers or RF Test Matrices & Signal Sources) they need to connect to — undersizing a component's power rating against that equipment is a common and avoidable failure point.