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Low PIM RF Safety Signs

As stated in previous posts, loosely touching metal surfaces above, below, and behind base station antennas are a common source of external Passive intermodulation (PIM) at cell sites.  While the metal brackets used to support cables are the most common source of PIM found near antennas, other external PIM sources are also present.  One such […]
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Inc. 5000 Recognized

For the third year in a row, ConcealFab has been selected as an Inc. 5000 fastest-growing private company. Leading the innovation of 5G infrastructure and RF solutions is what continues to set ConcealFab apart. Evolving to the ever-changing needs of the wireless industry, our ability to design, manufacture and meet specific industry demands is what […]
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PIM interference in C-Band networks

C-band is the designation given by the IEEE for radio frequency (RF) spectrum in the 4 GHz to 8 GHz frequency range. Historically, this spectrum has been used for satellite communications with uplink frequencies between 5.925 GHz and 6.425 GHz and downlink frequencies between 3.7 GHz and 4.2 GHz. A portion of the C-band downlink […]
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External Passive Intermodulation (PIM)

Passive intermodulation (PIM) is a problem for network operators that is not going away anytime soon.  In fact, it’s getting worse. To review, PIM is interference created when the transmit signals at a site mix at “non-linear” objects in the RF path and generate new frequencies.  If these new frequencies fall in an operator’s uplink […]
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Multi-Function Mounting System

ConcealFab’s PIM Shield® Multi-Function Mounting System provides a low-cost, low PIM method to secure cables to round or angle members at cell sites. LEARN MORE HERE
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Interference Mitigation Solutions

Mitigate external passive intermodulation (PIM) at your cell sites with our collection of innovative products and solutions featured in our new Interference Product Guide. Get an in-depth look at common causes of external PIM as well as a wide variety of PIM solutions available to deploy and improve performance at your sites. VIEW THE INTERFERENCE […]
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PIM Hygiene In Cell Sites

With vast experience conducting external PIM hunts in the field, ConcealFab has identified the most common sources of external PIM found in the high-risk PIM zone near antennas at cell sites. The PIM Hygiene application note identifies the most common PIM sources encountered and provides solutions for mitigation. In addition to the obvious problems, such […]
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New Radiated PIM Testing Standard Expected From IEC

Characterizing the Passive Intermodulation (PIM) performance of mechanical objects like brackets has presented designers with a new radiated PIM testing and measurement challenge.  How do you verify if a bracket design is low PIM when a bracket does not have Radio Frequency (RF) connectors for injecting PIM test signals?   A working group within the International […]
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Concealment Performance over CBRS & C-Band Spectrums

ConcealFab’s latest white paper presents measurements and performance of our concealment materials over the CBRS / C-Band frequency range as well as several concealment designs manufactured using these materials. With an in-house anechoic chamber and RF and mmW test equipment, concealment materials from sub-6 GHz to mmW frequency bands are extensively tested. Placing various concealment […]
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Modular Screenwall System

ConcealFab has developed an innovative screenwall system that has been refined over the years with deployments across the globe. The system has been used in support of traditional commercial screenwalls as well as rooftop systems supporting the US Government at home and overseas. Equipped with clearWave™, our concealment panels have been extensively tested in our […]
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