A new tunable current-mode peak detector |
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| Affiliation: | 1. Macquarie University, University Avenue Herring Road, Sydney, Australia;2. Electrical Engineering Department, Macquarie University, University Avenue Herring Road, Sydney, NSW, Australia;3. Electronics Engineering Department Macquarie University, University Avenue Herring Road, Sydney, NSW, Australia;1. State Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, China;2. School of Information Science and Technology, Sun Yet-sen University, Guangzhou 510000, China;1. Department of Radio Electronics, Brno University of Technology, Technicka 3082/12, Brno 616 00, Czech Republic;2. Department of Telecommunications, Brno University of Technology, Technicka 3082/12, Brno 616 00, Czech Republic;3. Department of Electrical Engineering and Computer Science, College of Polytechnics Jihlava, Tolsteho 16, Jihlava 586 01, Czech Republic |
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| Abstract: | The paper presents a completely new realization of peak detector/full-wave rectifier of input sinusoidal signals employing four CCCIIs (controlled current conveyors), metal-oxide–semiconductor transistors and a single grounded capacitor, without any external resistors and components matching the requirements. The circuit gives a DC output voltage that is the peak input voltage over a wide frequency range, with a very low ripple voltage and low harmonic distortion. The proposed circuit uses an all-pass filter as a 90° phase shifter of the square value of the processed input signal. The proposed circuit is very appropriate to be further developed into integrated circuits. To verify the theoretical analysis, the circuit HSPICE simulations were also included, showing good agreement with the theory. |
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| Keywords: | Controlled current conveyor (CCCII) Controllable all-pass filter Harmonic distortion Precision peak detector Ripple voltage |
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