Title :
Design of Precise Gain GmC-leapfrog Filters
Author :
Kaltiokallio, Mikko ; Lindfors, Saska ; Saari, Ville ; Ryynänen, Jussi
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo
Abstract :
This paper describes the analysis and predistortion of a precise gain GmC-leapfrog filter. A 1.2-V 240-MHz fifth-order continuous-time low-pass GmC-filter is used as a design example. A method of mapping the transconductor losses is presented. Furthermore, it is proposed that the load and source resistors can be removed from the filter prototype to relax the trade-offs in the design of precise gain filters. In addition, the effects of the Miller-capacitor are studied. An accurate predistortion result can be achieved with the techniques discussed in this paper.
Keywords :
capacitors; continuous time filters; low-pass filters; 1.2 V; 240 MHz; GmC leapfrog filters; Miller capacitor; continuous time filters; low pass filters; precise gain; transconductor losses; Active filters; Bandwidth; Baseband; CMOS process; Equations; Frequency response; Passive filters; Predistortion; Prototypes; Resistors;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378445
