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A 6th order bandpass continuous-time sigma delta modulator centered at 300MHz suitable for Software Defined Radio receiver is presented. This modulator is implemented in a standard low-cost 0.35µm CMOS technology. Several Q-enhanced LC resonators are implemented in a parallel structure using highly linear operational transconductance amplifiers (OTA), LC tank, and transconductor acts as a negative...
The intra-pulse modulation analysis of a detected signal is a major task of an intelligent receiver, in various civilian and military applications. To determine a signal source signature (e.g. radar or jammer) with M-ary Frequency Shift Keying intra-pulse modulation (M-FSK intra-pulse modulation) in the recent hardware implementation of electronic intelligence system receivers is difficult to achieve...
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