可應用於藍芽收發機之單平衡混頻器之設計與製作

Design and Implementation of Two Single-Balanced Mixers for a Bluetooth Transceiver

本篇論文主要是設計與分析兩種可應用於2.4 GHz ISM（industrial, scientific, and medical）頻帶之90 度合成混頻器，分別為一般型與低失真型。其中低失真型90 度合成混頻器的1-dB壓縮點與第三階截斷點均增加約3-dB。90 度合成混頻器主要的缺點是在2.4 GHz 頻帶時具有過大的面積，因此我們利用電容補償的方法設計了一個小面積的90 度單平衡混頻器。兩種混頻器均具有各自的特色與特性，因此可被應用於藍芽收發機。 In this study, two different types of 90-degree hybrid mixers were designed and analyzed in an ISM (industrial, scientific, and medical) 2.4 GHz band. The first is a general type; the other, a low-distortion type. For the low-distortion type, the 1-dB compression point and the third interception point are increased about 3-dB. The proposed mixers have a major shortcoming with a significant penalty in board space on the 2.4 GHz frequency band. Both mixers have their own features and characteristics; hence, they can be chosen for Bluetooth applications.