A SiGe HBT variable gain low noise amplifier with on-chip active balun design

作者：Yeh Ping Chun; Yang Tsung Yu; Liu Wei Cheng; Chiou Hwann Kaeo

来源：Microwave and Optical Technology Letters, 2007, 49(1): 42-45.

DOI：10.1002/mop.22052

• LNA
• VGLNA
• SiGe
• HBT
• active balun

A variable gain low noise amplifier (VGLNA) using a 0.35 mu m SiGe HBT process is described. A VGLNA with linear gain control and high linearity has been developed for 2.4 GHz ISM band applications. The gain control circuit is achieved without degrading either the input or the output VSWR. This technique can also simultaneously realize low noise figure and high linearity. The designed VGLNA achieved a gain of 19 dB, a noise figure of 2.7 dB, a third-order intercept point of -12 dBm, and a linear gain control range of 72 dB.

• 出版日期2007-1
• 单位中央民族大学