Title :
A compact low-power vertical filter for very-high-frequency applications
Author :
Yodprasit, Uroshchanit ; Sirivathanant, Krisada
Author_Institution :
Dept. of Electron. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand
Abstract :
A design approach for realising a low-power/low-voltage current-mode filter operating around 1 GHz region is presented. The key element of the filter is the biquadratic filter inherently implemented from a conventional regulated cascode structure. By vertically stacking these biquads, a high-order very-high-frequency filter can be realised with very-low power consumption. For demonstration, a 4th order Chebyshev filter operating at the cutoff frequency of 1 GHz is implemented. Under 2.4 V supply voltage, the simulation results indicate that the filter exhibits 42.4 dB spurious-free dynamic range (SFDR), 44.9 dB 1%-THD dynamic range and 710 μW power consumption
Keywords :
CMOS analogue integrated circuits; Chebyshev filters; Q-factor; UHF filters; UHF integrated circuits; VHF filters; biquadratic filters; circuit tuning; compensation; current-mode circuits; integrated circuit design; linear network synthesis; low-power electronics; 1 GHz; 2.4 V; 710 muW; LV current-mode filter; Q tuning scheme; biquadratic filter; compact low-power vertical filter; fourth-order Chebyshev filter; high-order filters; low-voltage operation; regulated cascode structure; vertically stacked biquads; very-high-frequency applications; Band pass filters; Chebyshev approximation; Circuits; Cutoff frequency; Dynamic range; Energy consumption; Postal services; Stacking; Topology; Voltage;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921816
