Programmable IF Strip (PIFS)

The Kaben Programmable IF Strip (PIFS) CMOS chip reduces the component count in a wireless receiver, while enhancing performance and enabling programmability. The PIFS provides SAW like frequency selectivity, without the need of external SAWs. This enables high performance front-ends based on high-IF superheterodyne architectures, as compared to the high noise and intermodulation level limited, low-IF or zero-IF designs. The PIFS achieves this while also providing zero group delay distortion performance.

The Kaben PIFS can be programmed to address the different front-end frequency bands and modulation bandwidths of multiple standards (such as for the 850, 900, 1800, 1900, 2100 and 2600 MHz wireless bands). Further, the single chip PIFS can be configured to simultaneously receive multiple, non-adjacent channels and to “re-pack” them into adjacent channels in its baseband. This is useful, for example, for the simultaneous reception of the L1, L2, L5, OS1, and OS2 bands of GPS.

The single chip PIFS is ideally suited for reconfigurable base-station front-ends, highly integrated TV tuners, and multifunction test instrumentation providing spectrum analysis, noise metering, and network analysis.