2006 · 13 citations · 7 references
EngineeringBiomedical EngineeringElectrical EngineeringAnalog ElectronicsLow-power DesignMicroelectronicsCmos Circuit DesignLow-noise Circuit DesignMicrowave Integrated CircuitsMixed-signal Integrated Circuit DesignRadio-frequency Integrated CircuitsReceiver SystemsAnalog Front-end CircuitsCapsule EndoscopyCmos Analog Circuit DesignCmos Analog Integrated CircuitsLow-power Cmos DesignPower ConsumptionRadio Frequency Front EndsReceiver Front-ends
This work presents the design and implementation of a 2.4GHz low power wireless transceiver analog front-end for the endoscopy capsule system in 0.25/spl mu/m CMOS process. The prototype integrates a low-IF receiver analog front-end (low noise amplifier, double balanced down-converter, band-pass filtered AGC loop and ASK detector) and a direct up-conversion transmitter analog front-end (20MHz IF PLL with well defined amplitude control circuit, ASK modulator, up-converter and output buffer) on a single chip together with an internal RF local oscillator and LO buffers. Design trade-offs have been made over the boundaries of the different building blocks to optimize the overall system performance. All building blocks feature circuit topologies that enable comfortable operation at low power consumption. As a result, the IC operates from a power supply of 2.5 V, while only consuming 15mW in receiver (RX) mode and 14mW in transmitter (TX) mode.
7
Design of bi-directional and multi-channel miniaturized telemetry module for wireless endoscopy
Hae‐Jin Park, H.W. Nam, B. S. Song et al. · 2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology. Proceedings (Cat. No.02EX578) · 2003 · 62 citations
Engineering, Biomedical Engineering, Electrical Engineering +17