PIM Testing Guidelines
Passive Intermodulation (PIM) occurs when two or more high power RF signals encounter PIM sources or materials in an RF path. This paper reviews the guidelines for proper PIM testing procedures.
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Range to Fault technology – Chinese
Passive intermodulation (PIM) has been recognized as a problem in communications systems for nearly 50 years. New technology is helping cut down on the amount of time it takes to find the source of the problem. Learn how Range To Fault (RTF) analysis can accurately predict the location of multiple static PIM sources within the RF infrastructure.
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Range to Fault technology – Deutsch
Passive intermodulation (PIM) has been recognized as a problem in communications systems for nearly 50 years. New technology is helping cut down on the amount of time it takes to find the source of the problem. Learn how Range To Fault (RTF) analysis can accurately predict the location of multiple static PIM sources within the RF infrastructure.
Range to Fault technology – Deutsch Read More »
Range to Fault Technology – Português
Passive intermodulation (PIM) has been recognized as a problem in communications systems for nearly 50 years. New technology is helping cut down on the amount of time it takes to find the source of the problem. Learn how Range To Fault (RTF) analysis can accurately predict the location of multiple static PIM sources within the RF infrastructure.
Range to Fault Technology – Português Read More »
Range to Fault Technology – Francais
Passive intermodulation (PIM) has been recognized as a problem in communications systems for nearly 50 years. New technology is helping cut down on the amount of time it takes to find the source of the problem. Learn how Range To Fault (RTF) analysis can accurately predict the location of multiple static PIM sources within the RF infrastructure.
Range to Fault Technology – Francais Read More »
Range to Fault technology – Espanol
Passive intermodulation (PIM) has been recognized as a problem in communications systems for nearly 50 years. New technology is helping cut down on the amount of time it takes to find the source of the problem. Learn how Range To Fault (RTF) analysis can accurately predict the location of multiple static PIM sources within the RF infrastructure.
Range to Fault technology – Espanol Read More »
Range to Fault Technology
Passive intermodulation (PIM) has been recognized as a problem in communications systems for nearly 50 years. New technology is helping cut down on the amount of time it takes to find the source of the problem. Learn how Range To Fault (RTF) analysis can accurately predict the location of multiple static PIM sources within the RF infrastructure.
Range to Fault Technology Read More »
Passive Intermodulation Measurement Techniques
Through interaction with engineers and technicians in many countries throughtout the world, Kaelus has had the opportunity to discuss and evaluate measurement techniques as they apply to a wide variety of items.
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Introduction to Same Band Combining of UMTS & GSM
The advantage of using a Same Band Combiner (SBC) is that infrastructure such as feeders, tower mounted amplifiers and antennas can be shared by multiple base stations or node-Bs. This means less equipment is required per sector with the benefits of lower operational & capital expenditure (opex/capex) as well as more efficient use of tower space.
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EVM Degradation in LTE Systems by RF Filtering
This report presents the results of an investigation into the EVM rise experienced by an LTE signal as it passes through an RF band pass filter of the type found in the front end of a typical cellular Node B.
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PIM Test Power Levels For Mobile Communication Systems
4G systems require network architectures with broadband modulation schemes to achieve the required increase in network capacity. This paper reviews the applicability of IEC 62037 for qualifying components, subsystems and systems used in today’s commercial telecommunications infrastructure and specifically addresses whether or not there is technical merit in increasing PIM test power levels from 20W to 40W.
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Network Coverage at its Best
As cellular mobile networks continue to expand, operators keep trying to find cost-effective ways to improve network performance. Tower loading, site access restrictions, or concerns with radio failures can in many instances restrict the installation of RRH at the top of the tower. Hence, the older generic site installation practice of using an RF feeder to go from the antenna to the base transceiver station (BTS) is still used in many applications. This scenario does introduce the potential need for tower mounted amplifiers that can provide increased capacity and better coverage.
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850 and 900MHz Coexistence
850 MHz and 900 MHz spectrums generate interference problems when deployed in the same geographic area. Addressing the receiver blocking problem requires a filter in the 900 MHz site. This paper incorporates a link budget methodology and 3 GPP adjacent channel selectivity requirements to address the 900 MHz receiver blocking problem.
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850 and 900MHz Receiver Blocking
850 MHz and 900 MHz spectrums generate interference problems when deployed in the same geographic area. This interference can be caused in two ways: receiver blocking and resultant intermodulation interference or out-of-band emissions from 850 MHz BTS entering the 900 MHz uplink (UL) band. Solutions to receiver blocking interference problems is the focus of this paper.
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Branch Insertion Loss Measurements with the iVA
Branch insertion loss in a DAS system (indoor or outdoor) measures the insertion loss from the equipment room out to the antenna ports that provide coverage within the venue. This brief white paper outlines how to measure this loss using iVA Cable & Antenna Analyzers from Kaelus.
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