Low PIM Multiplexers
Engineered for ultra-clean signal performance, Low PIM multiplexers are high-reliability passive components designed to combine or separate multiple frequency channels while minimizing passive intermodulation (PIM). Their low PIM characteristics ensure exceptional signal integrity in systems where interference and distortion must be kept to an absolute minimum.
Low PIM Multiplexers by MCV
MCV Low PIM multiplexers are built for mission-critical RF environments, delivering excellent isolation, low insertion loss, and extremely low intermodulation products. Housed in rugged connectorized enclosures, they are ideal for use in distributed antenna systems (DAS), public safety networks, wireless infrastructure, and other high-performance communication systems. Designed for durability and long-term stability, these multiplexers provide the clean signal paths needed for today’s high-density, high-demand RF deployments.
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FAQ about Low PIM Multiplexers
What is a Low PIM multiplexer?
A Low PIM multiplexer is an RF filter network designed to combine or separate multiple frequency bands while minimizing passive intermodulation (PIM) distortion, which can degrade signal quality in high-performance wireless systems.
What is Passive Intermodulation (PIM)?
PIM occurs when nonlinearities in passive components (like connectors, cables, or filters) create intermodulation products—unwanted signals generated from two or more high-power RF signals mixing together. These interfere with system performance, especially in cellular and wireless networks.
Why is Low PIM performance important in multiplexers?
Low PIM is critical in systems where multiple high-power carriers coexist (e.g., multi-band cellular base stations), because even small intermodulation signals can degrade receiver sensitivity, cause dropped calls, and interfere with adjacent channels.
What causes PIM in multiplexers?
Common causes of PIM in multiplexers include:
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Poor mechanical contacts (e.g., loose connectors or screws)
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Use of ferromagnetic materials (like nickel-plated surfaces)
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Contaminants (e.g., dirt, oxidation) on RF paths
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Improper soldering or assembly
How is PIM performance measured in a multiplexer?
PIM is usually measured using a two-tone test, applying two high-power signals (typically 20–43 dBm) and measuring the resulting intermodulation products, usually the 3rd-order PIM level, in dBc (decibels below carrier). Low PIM products are typically -150 dBc or better.
What applications require Low PIM multiplexers?
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Cellular base stations (2G/3G/4G/5G)
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DAS (Distributed Antenna Systems)
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Small cells and repeaters
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Satellite ground stations
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Public safety communication systems
How are Low PIM multiplexers different from standard ones?
Low PIM multiplexers are built with:
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Non-ferromagnetic materials (e.g., silver-plated, aluminum)
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Precision mechanical construction to reduce micro-arcing
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Careful assembly techniques to eliminate loose contacts
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High-quality connectors (like DIN or 4.3-10) rated for low PIM
Can a multiplexer degrade in PIM performance over time?
Yes. Over time, corrosion, vibration, thermal cycling, or loose connections can degrade PIM performance. Regular maintenance and PIM testing are important in high-reliability RF systems.
What are typical PIM specifications for Low PIM multiplexers?
Typical PIM performance levels include:
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-150 dBc or better (for premium-grade equipment)
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Some systems require -153 dBc or lower, especially in 5G and carrier aggregation scenarios
How can I ensure Low PIM in my RF installation
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Use certified Low PIM components (multiplexers, cables, connectors)
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Ensure tight, clean, and corrosion-free connections
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Avoid ferromagnetic materials
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Perform regular PIM testing
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Use torque wrenches to meet manufacturer tightening specs
How can I order Low PIM multiplexers from MCV Microwave?
To place an order for Low PIM multiplexers please contact us and we will help you!