Title :
A Simple Method for Designing the IM3 Phase of a Current Feedback Amplifier for GSM-UMTS Multi-stage RFICs with High Linearity
Author :
Nakatani, Toshifumi ; Miyahara, Yasunori ; Ogawa, Koichi
Author_Institution :
Network Dev. Center, Matsushita Electr. Ind. Co. Ltd., Osaka
Abstract :
A new method for designing the IM3 phase of a current feedback amplifier has been proposed, enabling the realization of GSM-UMTS multi-stage RFICs with high linearity. Not only the amplitude but also the phase differences between the IM3 characteristics, with and without feedback, are estimated from linear parameters. Thus the IM3 characteristics of the amplifier block and the effect of the feedback circuit can be designed separately. To confirm the validity of the method, an 850 MHz current feedback amplifier was tested, and a good agreement between the estimated and measured results has been achieved
Keywords :
3G mobile communication; UHF integrated circuits; cellular radio; circuit feedback; feedback amplifiers; integrated circuit design; parameter estimation; 850 MHz; GSM-UMTS multistage RFIC; IM3 phase design; Universal Mobile Telecommunication System; current feedback amplifier; feedback circuit; linear parameter estimation; radio-frequency integrated circuit; Amplitude estimation; Circuit testing; Current measurement; Design methodology; Feedback amplifiers; Feedback circuits; Linearity; Parameter estimation; Phase estimation; Radiofrequency integrated circuits; Feedback amplifier; GSM-UMTS receiver; IM3 phase; Volterra series; broadband amplifier; integrated circuit design; intermodulation distortion;
Conference_Titel :
Wireless Technology, 2006. The 9th European Conference on
Conference_Location :
Manchester
Print_ISBN :
2-9600551-5-2
DOI :
10.1109/ECWT.2006.280484
