An Ultralow Power Multirate FSK Demodulator With Digital-Assisted Calibrated Delay-Line Based Phase Shifter for High-Speed Biomedical Zero-IF Receivers

[[abstract]]頻率鍵移接收解調電路可廣泛應用於穿戴式或植入式生理訊號感測器與各種環境監測之成測器上，其其有超低功率消耗與抗干擾能力強之優點，因此可大幅增加成測器之使用壽命並提供可靠與穩定之資料傳輸品質。本論文提出一高速、可變傳輸速率與超低功耗之頻率鍵移接收解調電路設計。突破先前頻率鍵移解調電路最高解調速度為10 Mb/s 之限制，傳輸速率可達40 Mb/s 以上，因此可大幅降低接收每位元資料所需之能源消耗，提高能源效率。此電路架構可根據使用需求調整其傳輸速率範園1 Mb/s-40 Mb/s，以達到功耗與傳輸速率最佳化之目的。[[notice]]補正完畢[[incitationindex]]SCI[[booktype]]紙

A 2.24 mW 74 dBΩ-Gain, dc to 600 MHz-BW Differential Baseband Amplifier for 60 GHz Wireless Applications

[[abstract]]A low power, wideband and high linearity current-mode based differential baseband amplifier with a bandwidth from dc to 600 MHz applied for 60 GHz zero-IF RF receiver is presented. The wideband differential baseband amplifier is realized in a 90 nm CMOS process. A series-series feedback technique and a Q-enhanced active inductor are adopted in the current-mode baseband amplifier for achieving wideband and high linearity under a small current consumption. The measured maximum BW of 600 MHz, gain of 74 dBΩ and OIP3 of +12.5 dBV are realized with power consumption of only 2.24 mW under a supply voltage of 1.4 V. The measured performance shows the baseband amplifier fulfills the requirements for 60 GHz zero-IF RF transceivers.[[incitationindex]]SCI[[incitationindex]]EI[[booktype]]紙本[[booktype]]電子

A Highly-Integrated 3–8 GHz Ultra-Wideband RF Transmitter With Digital-Assisted Carrier Leakage Calibration and Automatic Transmit Power Control

[[abstract]]This paper presents a highly-integrated 3–8 GHz ultra-wideband (UWB) RF transmitter implemented in a 1.2 V 0.13- $mu$m CMOS technology. The transmitter integrates an analog baseband (PGAs and filter), an IQ modulator, a variable gain amplifier (VGA), a differential-to-single-ended amplifier, a power amplifier, as well as a transmitted signal strength indicator (TSSI). The RF VGA and the TSSI cooperate to perform an automatic transmit power control. The IQ modulator and an off-chip digital circuit implemented by a FPGA perform a carrier leakage calibration. Measured maximum output power and OP1 dB are $-$5 and $+$1.5 dBm, respectively. Measured worst carrier leakage suppression is 21 dB (before calibration) at 6.6 GHz. Measured worst sideband suppression is 29.1 dB at 7.6 GHz. The high linearity and accurate IQ modulation lead to an error vector magnitude (EVM) of $-$28 dB under the data rate of 480 Mb/s in WiMedia Mode 1. The entire transmitter consumes 66 mW under supply voltage of 1.2 V.[[abstract]]在此篇論文我們實現了一個應用於3-8 GHz 超寬頻(Ultra札Tideband， UWB) 無線通訊象統的射頻發射器(RF Transmitter)之急統與電路設計。此UWB 射頻發射器整合了類比基頻電路(基頻可變增益放大器與基頻濾波器)、I1Q 升頻調變器、射頻可變增益放大器、功率放大器與發射功率指標器(Transmit Signal Strength Indicator,TSSI) 。射頻可變增益放大器與TSSI 之協同工作實現了自動發射功率調整之功能O 射頻發射器亦搭配了數位輔助之載波洩漏校正電路(Carrier leakage Calibration) 。此射頻發射器俱有高調變精確度與高線性度。量測得到-5 dBm 之最大發射功率與+1.5 dBm 之輸出功率1 dB壓縮點(OP1dB)。在480 Mb/s 之資料傳輸速度下，可達到-28dB之Error Vector Magnitude (EVM) 。[[incitationindex]]SCI[[incitationindex]]EI[[booktype]]紙本[[booktype]]電子