Electronic filter

About: Electronic filter is a research topic. Over the lifetime, 13207 publications have been published within this topic receiving 93063 citations. The topic is also known as: filter.

Single-isolation pressure increase and reduction type multi-input direct current converter

Abstract: The invention relates to a single-isolation combination pressure increase and reduction type multi-input direct current converter, wherein the circuit structure is formed by connecting one multi-input single-output high-frequency inverter circuit, a plurality of common-ground input LC filters and one common output high-frequency isolation transformation energy-storage commutation filter circuit, wherein each input end of the multi-input single-output high-frequency inverter circuit is correspondingly connected with the output end of each input LC filter and the output end of the multi-input single-output high-frequency inverter circuit is connected with the input end of the high-frequency transformer. The converter has features of input direct current power supply common-ground, no insulation between the high-frequency inverter circuits, insulation between output and input, strong voltage match capability, time-sharing power supply of multi-input power supply, simple circuit topology, common use of output high-frequency transformer and energy-storage commutation filter circuit, high power density, high conversion efficiency, small output voltage ripple, low cost and wide application foreground, as the key technique for a distribution type power supply system of various renewable energy resources.

Phase-shift oscillator having ladder-type saw filter feedback circuit

Abstract: An oscillation circuit of phase-shift type includes a surface acoustic wave filter in a feedback circuit, the surface acoustic wave filter having first and second one-port surface acoustic wave resonators of different resonance frequencies connected in a ladder configuration. The oscillation circuit has a high C/N ratio with a large bandwidth of variable frequency and can be fabricated in a small size with low costs.

Non-intrusive eye monitor system

Abstract: A system including a filter circuit, an error module, and a measurement module. The filter circuit receives, from a network device, an analog signal having jitter, generates an equalized signal based on digital feedback signals and the analog signal, and generates a recovered data signal based on the equalized signal. The recovered data signal includes data transmitted by the network device to the system. The error module generates an error signal based on the equalized signal and a threshold signal. The measurement module generates a multiple signals based on the recovered data signal, and the error signal. The multiple signals include the digital feedback signals and eye characteristic signals. The eye characteristic signals indicate characteristics of an eye diagram of the recovered data signal. The measurement module generates the digital feedback signals such that the eye diagram of the recovered data signal does not include the jitter.

Filter circuit for use with real-time image converter

Abstract: The invention provides a filter circuit for use with a real-time video image converter. The filter circuit interpolates among a first sequence of digital pixel values and decimates among the interpolated sequence to generate a second sequence of digital pixel values with a desired granularity. Interpolation and decimation are preferably computed using weighted averages of digital pixel values.

Input protector device for semiconductor device

Abstract: An input protector device for a semiconductor device such as a CMOS device, in which a first resistor is formed on an insulating film of a semiconductor substrate, and a second resistor is formed of an impurity diffusion region in the substrate, the first and second resistors and a capacitor being coupled to one another in series to constitute a filter circuit, and in which first and second diodes each cooperated with at least one of the first and second resistors, by-passing noises having low and high voltages, respectively, and a high frequency noise is cut by the filter circuit, thereby effectively preventing latchup.