| Citation: |
Wan Chuanchuan, Li Zhiqun, Hou Ningbing. A CMOS Gm–C complex filter with on-chip automatic tuning for wireless sensor network application[J]. Journal of Semiconductors, 2011, 32(5): 055002. doi: 10.1088/1674-4926/32/5/055002
Wan C C, Li Z Q, Hou N B. A CMOS Gm–C complex filter with on-chip automatic tuning for wireless sensor network application[J]. J. Semicond., 2011, 32(5): 055002. doi: 10.1088/1674-4926/32/5/055002.
Export: BibTex EndNote
|
A CMOS Gm–C complex filter with on-chip automatic tuning for wireless sensor network application
doi: 10.1088/1674-4926/32/5/055002
-
Abstract
A Gm–C complex filter with on-chip automatic tuning for wireless sensor networks is designed and implemented using 0.18 μm CMOS process. This filter is synthesized from a low-pass 5th-order Chebyshev RLC ladder filter prototype by means of capacitors and fully balanced transconductors. A conventional phase-locked loop is used to realize the on-chip automatic tuning for both center frequency and bandwidth control. The filter is centered at 2 MHz with a bandwidth of 2.4 MHz. The measured results show that the filter provides more than 45 dB image rejection while the ripple in the pass-band is less than 1.2 dB. The complete filter including on-chip tuning circuit consumes 4.9 mA with 1.8 V single supply voltage.-
Keywords:
- complex filter
-
References
-
Proportional views
DownLoad: