An FCC compliant pulse generator for IR-UWB communications

—In [1], we have shown that it is feasible to design filters with arbitrary waveform responses and therefore we propose an ultra-wideband pulse generator incorporating a filter with a Daubechies’ impulse response (i.e. maximally flat over the desired frequency range). This pulse generator is co-designed with wideband antennas. An eight-order Padé approximation of its transfer function is selected to implement the FCC stipulated frequency spectrum. Subsequently, the orthonormal [2] form is adopted, which is intrinsically semi-optimized for dynamic range, has low sensitivity to component mismatch, high sparsity and whose coefficients can be physically implemented. Each coefficient in the state-space description of the orthonormal ladder filter is implemented at circuit level using a novel 2-stage gm cell employing negative feedback. Simulation results in IBM’s CMOS 0.13μm technology show that this pulse generator

• Type: Conference
• Year: 2006
• Where: ISCAS
• Authors: Sumit Bagga, Sandro A. P. Haddad, Wouter A. Serdijn, John R. Long
• Keywords: Arbitrary Waveform Responses, ISCAS 2006, Pulse Generator, Ultra-wideband Pulse Generator