Highly compact high-order micro-ring filters

Xiao, Shaoping; Khan, Maroof H.; Shen, Hao; Qi, Minghao

doi:10.1109/cleo.2007.4452440

Cited by 1 publication

(1 citation statement)

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“…At the same time, switchcapacitor filters also offer programmability options, making it possible to achieve modular and flexible architectures [9]. References [10][11][12][13] describe the design of switch-capacitor filters, but only the filtering characteristics of a certain function are designed separately, the range of applications is limited, and the bandwidth is not adjustable. References [14][15][16] describe the design with an adjustable bandwidth, but the range of adjustment is limited.…”

Section: Introductionmentioning

confidence: 99%

Switching Capacitor Filter with Multiple Functions, Adjustable Bandwidth in the Range of 5 Hz–10 kHz

He,

Yuan,

Xiao

et al. 2023

Electronics

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This article proposes a second-order switch-capacitor filter that integrates low-pass, high-pass, band-pass, band-stop, and all-pass, and achieves flexible bandwidth adjustment of the filter through clock rate and capacitance ratio. The final filter design consists of two completely independent second-order switch-capacitor filter channels, and a 4-order Butterworth low-pass filter is designed through two-stage cascades. The two completely independent second-order switch-capacitor filters are integrated on a single chip and manufactured using the Huahong BCD350GE high-voltage 24 V process. The measurement results indicate that the proposed switch-capacitor filter achieves various functional filtering characteristics and achieves a bandwidth of 5 Hz to 10 kHz. The chip area is 5.1 × 3.1 mm2, powered by a dual power supply of ± 5 V, and the power consumption is 80 mW.

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Section: Introductionmentioning

confidence: 99%