A 10.7-MHz fully balanced, Q-of-267, 103-dB-dynamic-range current-tunable bandpass filter

Sa-ngiamvibool, Worawat; Srisuchinwong, Banlue

doi:10.1109/apcc.2007.4433504

Cited by 2 publications

(5 citation statements)

References 16 publications

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“…The simulation results in Fig. 5 show the pole frequency of the fully balanced firstorder high-pass filter at temperature insensitivity with the CAPRIO technique at a frequency of 1.52 MHz, which is an error of about 1.3 % from equation (9). Then, the phase and gain responses of the circuit are shown in Fig.…”

Section: Engineeringmentioning

confidence: 97%

“…Analog filters are an important part of the analog building blocks that make up wireless communication systems [1,2]. They have been developed in different ways, such as having the pole frequency controlled electronically [3][4][5][6][7][8], having a small number of components that are easy to assemble [9][10][11][12], not being affected by temperature [4,5], being able to adjust the amplitude of the signal [3,12,13], multifunction filters [14][15][16][17][18], and reducing the total harmonic distortion (THD) [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…The analog filter in [9] shows a band-pass filter design comprised of simple components, including an adder, a low-Q bandpass filter, and a differential amplifier. The fully balanced first-order filter has compact components developed by [10,11].…”

Section: Introductionmentioning

confidence: 99%

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A fully balanced first order high-pass filter

Obma,

Jantakun,

Sa-ngiamvibool

et al. 2023

Eureka: PE

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The topic of this article is the design of a fully balanced first-order high-pass filter and its two circuits. The first circuit is a fully balanced current-tunability first-order high-pass filter consisting of four NPN transistors and a single capacitor, which is a simple design and quite compact. The pole frequency can be adjusted with a bias current. The results of the first circuit shows the phase and gain responses, the phase and gain responses when adjusted with a bias current, the time-domain response, and the harmonic spectrum. However, this circuit found a flaw in the temperature that affects the pole frequency, and total harmonic distortion is relatively high. Therefore, the second circuit improves defects by the CAPRIO technique to reduce the total harmonic distortion, and the resistors in the circuit are added to the design to replace the resistance and the effect of temperature on the properties of the transistor. This circuit consists of four NPN transistors, four resistors, and a single capacitor. The resistors in this circuit can be adjusted to change the pole frequency and voltage gain. The results of the second circuit show the gain and phase responses of the proposed circuits, the phase and gain responses when adjusted to the value of the resistor, the phase and gain responses at various temperatures, as well as their time-domain responses and total harmonic signal distortion. The all-pass filter is also made using the filter introduced in the second circuit because of its voltage gain-adjustable property. So, if the suggested circuit is constructed in combination with a buffer circuit to make it feasible to function as an all-pass filter, the result will be an all-pass filter. In accordance with the results of this study, we have introduced a design for a high-pass filter to reduce total harmonic distortion and the effect of temperature

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Section: Engineeringmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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A fully balanced first order high-pass filter

Obma,

Jantakun,

Sa-ngiamvibool

et al. 2023

Eureka: PE

Self Cite

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“…The affectability is generally consistent between -1 and 1. Such affectability isn't the same as the existing strategies [26,27].…”

Section: Sensitivitiesmentioning

confidence: 98%

“…The sensitivity of the parameters within the circuit is an important aspect that the designer will attribute to the best design or construction of the circuit. The symbol used is S to indicate the sensitivity of a parameter such as sensitivity of parameters y with changes of components or independent variable x [18,26]. Due to heat voltage V T , capacitance C and current sync.…”

Section: Sensitivitiesmentioning

confidence: 99%

The development a fully-balanced current-tunable first-order low-pass filter with Caprio technique

Lertkonsarn

Sa-ngiamvibool

2022

Eureka: PE

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This paper presents the development and design of a fully-balanced current-tunable first-order low-pass filter with Caprio technique, which could include the design and implementation of a first-order low-pass filter circuits. The filter consists of six bipolar junction transistor (BJT) and a single capacitor. The filter construction uses a bipolar junction transistor (BJT) as the main device and a single capacitor. A fully-balanced current-tunable first-order low-pass filter with Caprio technique developed. The architecture of the circuit is quite simple and proportional, symmetrical with signs of difference. Circuits developed into integrated circuits act like basic circuits for frequency filter circuits, current modes with Caprio techniques, obtained by improving the first-order low-pass filter for signal differences with incoming impedances. Adjusting the parameters of the circuit with the caprio technique achieves the optimal parameter value for correcting the total harmonic distortion value. The results of testing the operation of the circuit, a fully-balanced current-tunable first-order low-pass filter with Caprio technique developed and designed using the PSpice program. The simulation results showed good results in line with predicted theoretical analysis. The sensitivity of the device to the center frequency (ω0) response is low and independent of variables, the angular frequency is linear with wide current adjustment throughout the sweeping range of a wide frequency range, with a wide range of over tree orders of magnitude. Therefore, fully-balanced current-tunable first-order low-pass filter developed is very suitable to apply various applications regarding low frequency signal filtration, for example in biomedical systems, for example.

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A 10.7-MHz fully balanced, Q-of-267, 103-dB-dynamic-range current-tunable bandpass filter

Cited by 2 publications

References 16 publications

A fully balanced first order high-pass filter

A fully balanced first order high-pass filter

The development a fully-balanced current-tunable first-order low-pass filter with Caprio technique

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