Wireless Telecommunication

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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.

Test & Measurement

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.

Site Optimization Products

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.

Site Optimization Products

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.

Site Optimization Products

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. 

Test & Measurement

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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