A 0.13μm CMOS 2.3~2.9GHz Direct-Conversion WiMAX/LTE Transmitter with Novel Gain Control
A O.Bμm CMOS Direct-Conversion WiMAX/LTE transmitter with novel binary modulation gain control scheme and wide frequency band coverage is presented. In this work, binary modulation gain control realizes 36dB gain control at baseband frequency instead of by RF VGA at RF frequency. Output power is +0.5dBm and calculated EVM is 1.8％. A 4th order Butterworth low pass filter supports 2MHz~12MHz, 7-step corner frequency control, and 30dB, -1dB/step gain control. The transmitter supports 2.3GHz～2.9GHz band. Total current consumption is 135mW with 1.2V/2.8V supply included RF DA, up-mixer, low pass filter, LO divider and buffer.
Binary Modulation Gain Control RFTransmitter Direction-Conversion WiMAX/LTE
Weifeng Zhang Jiwei Huang Min Fang Zhengping Li Zhijian Fang
Guangzhou Runxin Information Technology Co. Ltd, Guangzhou, 510663, China Institute of RF-&OE IC, So Guangzhou Runxin Information Technology Co. Ltd, Guangzhou, 510663, China
国际会议
上海
英文
719-721
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）