CAS Quarterly

Fall 2015

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Page 55 of 59

Made in the USA by a Bunch of Fanatics ® The UHF spectrum that we use today is increas- ingly packed with high powered RF energy from television broadcasts. A wideband tuning range may seem like a good idea until you consider the total amount of RF energy that the broadcast signals generate. The wider the tuning range, the more RF energy enters the receiver. This excessive noise oor contributes to overload, desensing and intermodulation in the receiver. iQ is a dual-mode, tracking front-end lter that automatically switches from a normal tracking lter bandwidth to a narrower bandwidth (higher Q) lter with additional loss when the desired transmitter signal is above a certain level. The narrow mode adds further rejection of nearby unwanted signals and noise without compromising reception of the desired signal. It's how to make a wireless work in the middle of a spectrum packed with high powered broadcasts. "Shields up!" Normal mode Narrow mode Meet the new Venue 2 receiver and check out the white paper on wideband tuning.

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