Spectrum Analyzers- Real Time Applications
Since their inception in 1950s by the US Air Force, Spectrum Analyzers have covered a period of 50 years to diversify their role from being tools to measure vibrational frequency to site survey analyzers to microwave tower measurement and much more. A spectrum analyzer can be regarded as a wide band sensitive receiver which converts higher frequencies of about 10s of GHz to measurable quantities. These have found applications in various fields starting from:
Telecommunication industry
Wherein cell planners can use these to find spots of interference and also spotting the geographical areas which will have difficulty in receiving service. They are used to determine occupied bandwidth and interference sources.
Forensics
Spectrum analyzers can be used in like by measuring an individual’s speech pattern a verbal fingerprint can be taken and also identifying a speaker based on timbre changes in use of certain words. Thus a person can be identified only with the audio recording of an incident. This serves as a great help to the crime investigation industries.
EMC (electromagnetic compatibility) Testing
Here it is used for basic precompilance testing but cannot be used for full testing and certification.
Site Survey
Various advanced spectrum analyzers like 5.8 GHz site survey spectrum analyzer is a network addressable spectrum analyzer which offers a simple visual picture of what is in the RF environment. This can be installed at the customer’s site and logged into from your office. This has provided a very meaningful application as with a quick glance you can see if a particular frequency is being used or being polluted with other wireless traffic. These are fully web browser interfaced and help in improving your installations thus providing better service to your clients.
Technical and Professional Firms
The application can also be found in device frequency response management (to measure the amplitude response against frequency of device) and microwave tower monitoring for measuring transmitted and received power of a microwave tower.
The 1990s and post 90s period showed some of the most relevant developments in the field of spectral analysis by making the hardware cheaper to manufacture and made the use of this equipment much easy.
Modern manufacturers are producing software tools that allow for the measurements for over a dozen pieces of hardware which makes them easily available. The easy and prompt availability is likely to make them very popular in college laboratories, boats and airplanes etc.
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