Title :
A band selection/switching technique for multi-mode wireless front-end transceivers
Author :
Madihian, Mohammad
Author_Institution :
C&C Res. Labs, NEC USA, Princeton, NJ, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper describes a frequency-band selection/switching technique and its application to multi-mode wireless transceiver circuits. The technique utilizes voltage-controlled variable inductors and resistors for, respectively, changing input/output impedance and load of the transceiver´s key-circuits in accordance with the mode´s frequency. Preliminary results for several 0.18 μm-BiCMOS building block circuits including RF amplifiers and up/down mixers show feasibility of the approach proposed in multi-mode transceiver systems.
Keywords :
BiCMOS integrated circuits; MMIC amplifiers; MMIC mixers; UHF amplifiers; UHF integrated circuits; UHF mixers; electric impedance; inductors; integrated circuit design; resistors; switching circuits; transceivers; 0.18 micron; BiCMOS building block circuits; RF amplifiers; RF up/down mixers; frequency-band selection/switching techniques; mode frequencies; multi-mode wireless front-end transceivers; transceiver input/output impedance; transceiver key-circuits; transceiver load; voltage-controlled variable inductors; voltage-controlled variable resistors; Active inductors; Bipolar transistors; Circuit topology; Frequency conversion; Impedance matching; Mixers; Radio frequency; Resistors; Transceivers; Voltage control;
Conference_Titel :
Microwave and Optoelectronics Conference, 2001. IMOC 2001.Proceedings of the 2001 SBMO/IEEE MTT-S International
Print_ISBN :
0-7803-7065-1
DOI :
10.1109/SBMOMO.2001.1008761
