AFS14A34-1588.66-T3 Filters

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Surface Acoustic Wave (SAW) Filters are highly beneficial and useful components in RF applications. SAW Filters are integral components in receivers, enabling precise frequency selection by band-pass or band-stop characteristics for selectivity and rejection. For example, AFS14A34-1588.66-T3 is a SAW Filter which can be used in various applications due to its unique design and specifications.

AFS14A34-1588.66-T3 is designed to provide ultra-low insertion loss in both the Pass Band and Stop band, all while holding high rejections on unwanted signals. This SAW Filter has a pass band (C3) of 1580 - 1610 MHz, an insertion loss in the stop band (C2) of ≤2.0 dB over the full band, and a stop band rejection of ≥50 dB. This component is also designed to have excellent phase/amplitude matching and group delay.

The working principle of this SAW Filter involves a pair of interdigital transducers (IDT) and a surface acoustic wave (SAW) enhanced piezoelectric substrate. The IDTs are special electrode structures that are etched on the piezoelectric substrate, which converts electrical energy to acoustic energy. The inter-digital transducers act as signal transformers, transforming the electrical signals in the active element at the input/ouput terminals into traveling acoustic waves over the surface of the piezoelectric substrate. The SAW Filter acts as a signal processing element, producing filtering effects via variations of the wavelengths, time of arrival, and amplitude.

The main application for AFS14A34-1588.66-T3 is in Global Positioning System (GPS) receivers, providing both selectivity and rejection. By using the SAW Filter with its inserted low loss and high rejection capabilities, the GPS receiver can more accurately identify the wanted signal frequencies and reject undesirable elements. Other applications include mobile radio and wireless PCS communication systems, where broadband filtering is needed.

In summary, the AFS14A34-1588.66-T3 is a SAW Filter that utilizes a surface acoustic wave (SAW) enhanced piezoelectric substrate with interdigital transducers to produce precise frequency selection and rejection. This SAW Filter has an ultra-low insertion loss in both the pass and stop band and can be used for various RF applications, such as GPS receivers for position tracking, mobile radio, and wireless PCS communication systems.

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