A Switchable Low-Area 2.4-and-5 GHz Dual-Band LNA in Digital CMOS
 
A Switchable Low-Area 2.4-and-5 GHz Dual-Band LNA in Digital CMOS ■
 
Jonathan Borremans, Jonathan Borremans, Jonathan Borremans, Piet Wambacq, Piet Wambacq, Piet Wambacq, G. Van Der Plas, G. Van Der Plas, G. Van Der Plas, Yves Rolain, Yves Rolain, Yves Rolain, Maarten Kuijk, Maarten Kuijk, Maarten Kuijk
 
Abstract ■

Contemporary multistandard receivers implement the LNA functionality with either broadband LNAs, multiple separate LNAs or multiband LNAs. For system linearity, integration and area consumption, a multiband LNA could be preferable. This work demonstrates a switchable, 2.4-and-5 GHz dual-band feedback LNA, on an area as low as 40×160 µm2. Over 20 dB of gain is attained for a NF of 2.1 dB and a power consumption of 3.8 mW, indicating that the solution is suitable for low-cost multistandard receivers implemented in digital CMOS.