A Low Noise Amplifier for Medical Implant Communication System Band

This paper presents the modeling and design of a low noise amplifier in the medical implant communication system band (MICS) for the reception part in a biomedical implant. The amplifier design is based on the minimization of bulky components such as inductors and capacitors. The proposed amplifier is of cascaded type, it contains a single inductor, capacitor and resistor in the input matching circuit. The amplification part is composed of four similar inductorless stages. The LNA operates at 2/-2V. It achieves at 402 MHz frequency high voltage gain about 27dB with 2 dB noise figure and 1 dBm IIP3.