http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Redouté (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Yuce and Jean-Michel Redouté,Ahmed I. AL-Kalbani,Mehmet R. Yuce 대한의용생체공학회 2013 Biomedical Engineering Letters (BMEL) Vol.3 No.1
Purpose This paper explores the bio-telemetry, powering and electromagnetic exposure design concerns in implanted neural systems. Methods A class-E transmitter transfers PWM-ASK (Pulse-Width Modulated Amplitude-Shift Keying) modulated data signals to the brain implants at an optimal speed, while efficiently delivering sufficient power so as to keep the exposure of tissue to electromagnetic fields within tolerable limits. Results A case study design illustrates that using a PWMASK modulated class-E transmitter, switching at a 5 MHz carrier frequency and requiring a voltage supply of 5 V, the maximal achievable data rate is equal to 168 kbps. Furthermore,two possible transmitter coil designs are proposed: simulations show that the minimal specific absorption rate (SAR) value when comparing these coils to power brain implants is equal to 1.72 W/kg for a transmitted power of 1 W per coil. Conclusions This paper illustrates how the fundamental limits on the achievable PWM-ASK data transmission rate,as well as achievable bit error rate (BER) versus signal to noise ratio (SNR), can be improved using a Class-E transmitter design. Additionally, it has been shown which coil setups can be used so as deliver sufficient power to implants while keeping the exposure of tissue to electromagnetic fields at a minimum.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
