Designing a High Performance, Single-SAW SDARS Solution

This App Note outlines the design considerations surrounding Guerrilla RF’s new Satellite Digital Audio Radio Service (SDARS) solution for non-collocated cellular transmit applications. In this operating environment, the difficult out-of-band blocker (OOB) specification is reduced significantly from +10 dBm to –10 dBm. This relaxation of the OOB blocker spec makes it possible to have a spec-compliant LNA solution which uses only a single surface acoustic wave (SAW) filter. The primary driver behind this architecture is the cost savings that can be realized from omitting the SAW filter prior to the stage 1 LNA.

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