Title :
Voltage-mode high-order OTA-only-without-C low-pass (from 215 M to 705 M Hz) and band-pass (from 214 M to 724 M Hz) filter structure
Author :
Chang, Chun-Ming
Author_Institution :
Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung-li, Taiwan
Abstract :
Using only single-ended-input OTAs and grounded capacitors, a low sensitivity voltage-mode high-order OTA-C low-pass and band-pass filter structure with the least number of components is presented using an analytical synthesis approach. Since each internal node has a grounded capacitor to absorb its parasitic capacitance, after replacing the traditional capacitor with the parasitic capacitance, a novel voltage-mode high-order OTA-only-without-C low-pass and band-pass filter structure is then proposed. H-SPICE simulations show that the operational frequencies are from 215 to 705 MHz and from 214 to 724 MHz, respectively, for the proposed tenth-order OTA-only-without-C low-pass and band-pass filters.
Keywords :
CMOS analogue integrated circuits; UHF filters; VHF filters; active filters; band-pass filters; integrated circuit design; low-pass filters; network analysis; operational amplifiers; sensitivity; 214 to 724 MHz; CMOS implementation; H-SPICE; OTA filter structure; analogue circuit synthesis; analytical synthesis approach; band-pass filter; grounded capacitors; low sensitivity filter; low-pass filter; parasitic capacitance; single-ended-input OTA; voltage-mode high-order filter structure; Active circuits; Band pass filters; Capacitors; Circuit simulation; Circuit synthesis; Electronic mail; Frequency; Low voltage; Parasitic capacitance; Transfer functions;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465994
