CAJ | 학술논문

设计了一个用于非相干脉冲超宽带接收机的0.18-μm CMOS工艺的能量检波器.该检波器包含了输入匹配模块、平方电路、翻转电压跟随器-电流检测电路、跨导级以及输出缓冲器.平方电路运用饱和区晶体管的平方律特性对输入差分信号进行平方,所得到的输出电流由翻转电压跟随器-电流检测电路转换成电压.跨导级对该信号进行放大并积分得到所接受的能量.测试结果可以看出,当输入信号的峰峰值超过60mV时,在高达300 MHz的频率下检波增益可以达到10 dB.而最小检测幅度为13 mV,此时的检波增益为5 dB.在移除输出缓冲器之后,输出脉冲的幅度将增加一倍.不计及测试焊盘,芯片面积为0.23 mm×0.3 mm.电路由一个1.8 V的电源供电,核心电路电流为3.5 mA.该检波器已成功应用于开关键控方式的接收机以实现高速宽带通信.
설계료일개용우비상간맥충초관대접수궤적0.18-μm CMOS공예적능량검파기.해검파기포함료수입필배모괴、평방전로、번전전압근수기-전류검측전로、과도급이급수출완충기.평방전로운용포화구정체관적평방률특성대수입차분신호진행평방,소득도적수출전류유번전전압근수기-전류검측전로전환성전압.과도급대해신호진행방대병적분득도소접수적능량.측시결과가이간출,당수입신호적봉봉치초과60mV시,재고체300 MHz적빈솔하검파증익가이체도10 dB.이최소검측폭도위13 mV,차시적검파증익위5 dB.재이제수출완충기지후,수출맥충적폭도장증가일배.불계급측시한반,심편면적위0.23 mm×0.3 mm.전로유일개1.8 V적전원공전,핵심전로전류위3.5 mA.해검파기이성공응용우개관건공방식적접수궤이실현고속관대통신.
An energy detector fabricated in a 0. 18-μm CMOS technology intended for a noncoherent impulse-radio UWB (IR-UWB) receiver was presented. The detector consists of an input matching circuit, a squarer, a flipped voltage follower current sensor (FVF-CS), a Gm cell and an output buffer. The squarer based on the quadratic law of saturated transistors squared the differential signals; the output current was converted to voltage by an FVF-CS. A Gm cell amplified the signal and integrates the received pulse energy. Measurement results show that the circuit can work up to 300 MHz with a conversion gain of 10 dB when the peak to peak amplitude of the input differential signals is larger than 60 mV. The minimum detected amplitude is 13 mV with a conversion gain of 5 dB. The amplitude of the output pulse will be doubled after removing the matching circuits. The overall detector circuit occupies 0. 23 mm × 0. 3 mm without test pads. The core circuit draws 3. 5 mA current from a single 1.8 V power supply. The detector has been successfully applied in OOK receivers used for high speed and wide bandwidth communication.