Digital If Filter for Mobile Radio

A multirate IF filter for mobile radio has been implemented in silicon. The filter consists of a decimation stage followed by a bandpass filter. Both parts use a lattice wave digital structure. The design and implementation are described beginning with the filter specification and proceed through algorithmic design, operations scheduling, and resource allocation and assignment. Every step tries to minimize the amount of resources in the final implementation, thereby reducing power consumption. Finally the architecture is selected and the system is described using synthesizable VHDL in order to arrive at a chip layout using standard-cell technology. This design technique is used to reduce the design work.