A low voltage low power up-conversion mixer for WSN application

• 作 者: 吴晨健 李智群 孙戈
• 机 构: Institute of RF-& OE-ICs, Southeast University,Jiangsu Provincial Key Laboratory of Sensor Network T
• 出 处: Journal of Semiconductors
• 发表日期: 2014年04期
• 关键词: mixer Gilbert quadrature removed reuse balanced consumed linearity boost transce

This paper presents an up-conversion mixer for 2.4–2.4835 GHz wireless sensor networks(WSN) in0.18 m RF CMOS technology. It was based on a double-balanced Gilbert cell type, with two Gilbert cells having quadrature modulation applied. Current-reuse and cross positive feedback techniques were applied in the mixer to boost conversion gain; the current source stage was removed from the mixer to improve linearity. Measured results exhibited that under a 1 V power supply, the conversion gain was 5 dB, the input referred 1 dB compression point was –11 dBm and the IIP3 was 0:75 dBm, while it only consumed 1.4 mW.

This paper presents an up-conversion mixer for 2.4-2.4835 GHz wireless sensor networks (WSN) in 0.18 m RF CMOS technology. It was based on a double-balanced Gilbert cell type, with two Gilbert cells having quadrature modulation applied. Current- reuse and cross positive feedback techniques were applied in the mixer to boost conversion gain; the current source stage was removed from the mixer to improve linearity. 1 dB compression point was -11 dBm and the IIP3 was 0:75 dBm, while it only consumed 1.4 mW.