Radio Interference Analysis


WirelessSite-RFI (Radio Frequency Interference) is an authoritative, wireless communications site interference analysis tool. It is specifically designed to help identify, analyze, locate and resolve radio frequency interference that could affect the safe and efficient operation of wireless communications systems.

WirelessSite-RFI will calculate isolation values required to prevent receiver performance degradation due to transmitter noise, receiver desensitization, transmitter and receiver produced intermodulation products, harmonics and transmitter spurious output. The program saves many hours of arduous manual calculations and table lookups and eliminates human calculating errors. Additionally, it will automatically calculate insertion and rejection loss values associated with filters and multicouplers and determine antenna gain values based on actual antenna patterns.

WirelessSite-RFI includes several libraries of manufacturers' data for equipment, transmitter noise and receiver desensitization curves (duplex curves), antenna gain patterns, and filter/multicouplers devices. The user can also create new RF component curves for any filters, radio equipment duplex curves that may be required as well as import additional antenna pattern files into the library.


RF Interference Analysis Methods

  • Transmitter Intermodulation
  • Receiver Intermodulation
  • Transmitter Noise
  • Receiver Desensitisation
  • Transmitter Harmonics
  • Transmitter Spurious Output
  • Receiver C/(I+N) Interference Summing

WirelessSite-RFI supports all communication system technologies. This includes; FM Land Mobile, AM Aeronautical, ACSSB, AM, FM and TV Broadcast, Microwave, AMPS, AMPS-CDMA, PCS TDMA, PCS CDMA, W-DCMA, GSM-900, GSM-1900, 800 MHz Trunking, SMR, ESMR, Paging, GPS, Wireless Data, WiMAX LTE, AWS, UMTS and others.

Core Features

WirelessSite-RFI automatically calculates each IM product signal level and determines if it will interfere with each associated receiver. IM signal level analyses are based on actual site conditions such as transmitter ERP, filter/combiner losses, transmission line losses, antenna gain and antenna spacing. Signal levels are analyzed for IM mixing in each receiver and each transmitter.

  • Frequency range from 500 KHz to 40 GHz.
  • Evaluates 1st through 11th order IM products, up to five transmitters at a time.
  • Reverse IM- Determines what transmitter combinations at the site could generate a known intermodulation product.
  • Calculates antenna spacing distances and isolation values for horizontal, vertical and other complex antenna spacing configurations.
  • Data Entry Wizards, lookup tables, and list boxes minimize keystrokes and avoid data entry errors.
  • Performs calculations based on user selection of all base stations, selected transmitters, selected receivers, or by frequency band.
  • Individual transmitter and receiver bandwidths to support PCS and other wireless equipment types.
  • Determines isolation values required to prevent receiver degradation due to transmitter noise and receiver desensitization.
  • Determines isolation values required to prevent receiver degradation caused by transmitter or receiver produced intermodulation products.
  • Perform calculations based on Carrier-to-Interference ratio or 12 dB SINAD ratio for digital and analog applications.
  • Customizable Reports.
  • Save and retrieve system configurations saves time and effort for future analysis.