CMOS TRANS-CONDUCTANCE LNA INTEGRATION OF VITAL SIGN PROCESSING RECIEVER WITH CLUTTER ELIMINATION USING SC CHEBYSHEV LPF

ABSTARCT :

This brief describes a critical signal processing circuit without any automatic signal processing or ultra-wideband (UWB) pulse-based radar algorithm for simultaneous dc/near-dc exclusion and out-of-band interference removal. As a secure and balanced pseudo resistor applied under a servo feedback mechanism in a critical signal receiver of the sensing radar, it was proposed that an inherent self-balancing MOS diode (SBMD) operate as a High-Pass Filter (HPF) with an ultra-low corner frequency below 0.5 Hz to suppress undesired clutters of reflected signals and input dc-offset voltages from underlying circuit offsets. A third-order switched-capacitor (SC) Chebyshev low-pass Filter (LPF) with trans-conductance low-noise amplifier (LNA) and leap-frog topology was embraced as the next step to remove out-band noise, create an integrated band-pass response vital-sign transmission circuit and incorporate it into a radar module to verify its viability. This study was finally established at 130 nm and 45 nm CMOS Technology in Tanner EDA.

EXISTING SYSTEM :

The CW radars suffer from the null detection problem that exists at every multiple of a quarter free-space wavelength distance. In this paper, we propose a single channel receiver topology to eliminate the null points using the path-diversity transmission. The conventional FFT method and the proposed feature extraction method for two separation distances between two targets to evaluate the performance of the proposed algorithm for the vital sign detection of multiple targets: one closer than the theoretical range resolution and the other greater. It is a very simpler scheme devised for data loss and has been employed in numerous application.

DISADVANTAGE :

PROPOSED SYSTEM :

Phase noise analysis shows that the proposed radar has the advantages of both phase-locked oscillators and self-injection-locked oscillators to achieve high power spectral signal-to-noise ratio. A Doppler radar using a self-injection-locked (SIL) oscillator has been proposed to achieve a high SNR gain in the vital-signal bandwidth. Single channel receivers using the dynamic phase variation technique have been proposed to find the optimal detection point with complicated algorithm. The present study proposes a novel vital-sign sensing algorithm for clear target identification and accurate vital sign estimation using a single 24 GHz FMCW Doppler radar based on FCC regulation.

ADVANTAGE :

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