In this paper, a new image-reject low noise amplifier is designed for the 2.4 GHz industrial-scientific-medical (ISM)band. An inter-stage T -structure filter is used in the low noise amplifier design to provide 35-dB image rejection.The goal of this design is to merge the image-reject function into the low noise amplifier.
In this paper, we propose the new two-dimensional (2-D) systolic-array structures of IIWFIR digital filters without global broadcast by the different derivation and another systolic transformation. For more practical considerations, we further provide a detailed block diagram of a 2-D FIR filter using recently proposed multiplier to reduce the roundoff quantization error in the logic-gate level. These proposed systolic structures amenable to VLSI implementation permit the 2-D input sequence to be scanned in row-wise mode and locally broadcast one value each clock per delay element.
In this paper, we propose a new pipelining extended Givens Rotation Recursive Least Square (PEGR-RLS) architecture using look-ahead technique. The square-root-free forms of QRD-RLS are also difficult to pipeline. The PEGR-RLS algorithm (referred to as Scaled Tangent Rotation, STAR-RLS) is designed such that fine-grain pipelining can be accomplished with little hardware overhead. Similar to STAR-RLS, this algorithm is not exactly orthogonal transformations but tends to become orthogonal asymptotically. This algorithm also preserves the desired properties of the STAR-RLS algorithm. Specifically, it can be pipelined at very low forgetting factor by using extended look-ahead. Simulation results are presented to compare the performance of the STAR-RLS, QRD-RLS, and LMS algorithms.
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