Fully-Differential Tunable Fractional-Order Filter with Current Followers and Current Amplifiers

被引：0

作者：

Langhammer, Lukas ^{[1
]}

Sotner, Roman ^{[1
]}

Dvorak, Jan ^{[1
]}

Jerabek, Jan ^{[1
]}

Polak, Josef ^{[1
]}

机构：

[1] Brno Univ Technol, Fac Elect Engn & Commun, Tech 12, Brno 61600, Czech Republic

来源：

2017 27TH INTERNATIONAL CONFERENCE RADIOELEKTRONIKA (RADIOELEKTRONIKA) | 2017年

关键词：

adjustable current amplifier; current-mode; current follower; fractional-order; fully-differential; low-pass filter; OSCILLATORS; CAPACITOR; CIRCUITS; DESIGN;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The paper presents proposal of a fully-differential fractional (1+alpha)-order low-pass filter. The filter operates in the current mode. It is based on the well-known follow-the-leader feedback (FLF) topology of the the 3rd-order filtering structure utilizing fully-differential current followers (FD-CFs) and adjustable current amplifiers (ACAs), in our case, in order to approximate fractional-order low-pass filter response in particular frequency band of interest. The design correctness and proper function of the proposed filter are supported by PSpice simulations. The filter provides ability to electronically control its order in range from 1 to 2 and also offers the electronic control of the cut-off frequency. These features were tested for three different values in case of the control of the order and three different values in case of the control of the cut-off frequency.

引用

页码：102 / 107

页数：6

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