RF microelectronics
Robust modulation methods and smart antennas in wireless communications
Robust modulation methods and smart antennas in wireless communications
Low power high data rate wireless endoscopy transceiver
Microelectronics Journal
Implantable stimulator and recording device for artificial prosthesis control
Microelectronics Journal
A Low Cost Superregenerative Saw Stabilized Receiver
IEEE Transactions on Consumer Electronics
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This paper presents a receiver for operation in the 433MHz ISM band. The selected architecture explores the super-regeneration phenomena to achieve a high sensitivity for applying in wireless implantable microsystems. This radio-frequency (RF) chip can be supplied with a voltage of only 3V for demodulating signals with powers in the range (-100, -40)dB. The codulation (modulation and coding) scheme of the binary data is a variation of the Manchester code combined with on/off keying (OOK) modulation. The AMIS 0.7@mm CMOS process was selected for targeting the requirement to fabricate a low-cost receiver, whose prototype was integrated in a die with an area of 5x5mm^2. Also, this receiver is fully compatible with commercial transmitters for the same frequency.