A Compact Reconfigurable LNA for Single Path Multistandard Receiver

A designed LNA can support the dualband; 2.3~2.5 GHz and 5.1~5.9 GHz. Switched inductor and switched capacitor is adopted for frequency selection. In switched inductor and capacitor matching network, the optimizing techniques to minimize the insertion loss are explained and self-matched capacitor is proposed for easy flexible impedance and noise matching in the various frequency bands. As using switched inductor and capacitor matching network, a designed LNA can support IEEE 802.11a/b/g in 2.4 GHz and 5.2 GHz. The performances of LNA are comparable with those of LNA for single standard due to self-matched capacitor and optimized switched inductor matching network. The dualband LNA is designed with small size (0.5 mm2) by reducing the number of inductors.

[1]  H. Hashemi,et al.  Concurrent dual-band CMOS low noise amplifiers and receiver architectures , 2001, 2001 Symposium on VLSI Circuits. Digest of Technical Papers (IEEE Cat. No.01CH37185).

[2]  A. Ismail,et al.  A 3 to 10 GHz LNA using a wideband LC-ladder matching network , 2004, 2004 IEEE International Solid-State Circuits Conference (IEEE Cat. No.04CH37519).

[3]  Adiseno,et al.  A wide-band RF front-end for multiband multistandard high-linearity low-IF wireless receivers , 2002, IEEE J. Solid State Circuits.

[4]  Ji-Hoon Kim,et al.  Reconfigurable CMOS Mixer for Multi-Standard Applications , 2005, IEICE Trans. Electron..

[5]  M. Madihian.  A band selection/switching technique for multi-mode wireless front-end transceivers , 2001, Proceedings of the 2001 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference. (Cat. No.01TH8568).