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This paper propose a multi-standard transceiver architecture, based on 3.6-to-4.4 GHz UWB impulse transmitter and 402-to-405 MHz super-regenerative receiver for medical implant devices. This architecture eliminates the requirement of frequency synthesizer and power amplifier at transmitter side and LNA, mixers, IF amplifiers and ADCs. at receiver side of implant transceiver. The multi-standard external...
In this work, the design of a new frequency doubler passive subharmonic mixer circuit for low-power and low-cost biomedical devices is presented using CMOS 0.13 mum UMC technology. This circuit operates in a quadrature double-balanced mode and required octet-phases. Included in the design is a circuit that generates an octet-phase LO signals from a differential input, an output LNA buffer and a resistive...
The conventional common-gate low-noise amplifier (CGLNA) exhibits a relatively high noise figure (NF) at low operating frequencies relative to the MOSFET fT, which has limited its adoption even though its superior linearity, input matching, and stability compared to the inductively degenerated (CS-LNA). The design of a low-power inductorless LNA using a capacitive cross-coupled (CCC) gm -boosting...
Three CMOS RF low noise amplifier circuits have been designed and simulated. These LNAs are intended for use in 402-405 MHz medical implant communication service transceivers. The inductively degenerated common source LNA (CS-LNA) topology is currently popular because it achieves high gain, low noise figure, and high linearity. In this paper cascode LNA with inductive source degeneration, LC folded...
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