V頻帶除四之除頻器與破壞流感病毒手持微波裝置

Abstract

本篇論文提出了一個以90奈米數位CMOS製程所製作的V頻帶寬頻除四除頻器。在反饋式除頻器架構中，採用諧波混頻器能達成頻率除四之功能。電源分離和並聯峰化電感的技巧被使用在混頻器中來提高對除頻範圍舉足輕重的轉換增益。操作在1.2 伏特的電源供應下，除頻器消耗15.5毫瓦的功耗，並能產生四相位的輸出訊號。低於0 dBm的輸入功率情形下，量測的除頻範圍可達5.4 GHz。 除了寬頻除四除頻器之外，此篇論文也提出了一個破壞流感病毒微波裝置。被功率放大器增強的8 GHz微波訊號匯入天線並照射在病毒上。實際進入天線的功率增益是28 dBm。在15分中的微波照射下，H3N2流感A型病毒的死亡率可達93％。此破壞流感病毒微波裝置共消耗了7.26瓦的直流功耗。

This paper presents a V-band wide-locking range divide-by-four frequency divider implemented in 90-nm digital CMOS technology. A subharmonic mixer is adopted in the regenerative divider architecture to realize the division ratio of four. The splitting supply and parallel inductive peaking techniques are applied to the mixer design to boost the conversion gain, which is the bottleneck of the divider’s locking range. Operated at 1.2 V, the frequency divider consumes 15.5 mW of power and generates four-phase output signals. The measured locking range is 5.4 GHz with the input signal power smaller than 0 dBm. A microwave influenza virus deactivator is also presented in this thesis. The 8-GHz microwave signal amplified by the power amplifier (PA) enters an antenna to illuminate the H3N2 virus. The measured signal power fed into the antenna is 28 dBm. Under 15-minute illumination, the measured death rate of the H3N2 virus is 93％. The total DC power is 7.26 W.