band-pass crystal filter

См. также в других словарях:

• band-pass filter — /band pas , pahs /, Elect., Electronics. a filter that attenuates all frequencies except those of a specific band, which it amplifies. [1920 25] * * * ▪ electronics       arrangement of electronic components that allows only those electric waves… …   Universalium

• Crystal radio — Crystal set redirects here. For the Australian rock band, see The Crystal Set. A modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device… …   Wikipedia

• Electronic filter — Electronic filters are electronic circuits which perform signal processing functions, specifically intended to remove unwanted signal components and/or enhance wanted ones. Electronic filters can be:*passive or active *analog or digital *discrete …   Wikipedia

• Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( …   Wikipedia

• RF and microwave filter — Radio frequency (RF) and microwave filters represent a class of electronic filter, designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). This frequency range is the range… …   Wikipedia

• monolithic filter — ▪ electronics       a complete frequency selective filter constructed on a single piezoelectric crystal plate. A piezoelectric crystal is one in which a physical deformation or movement takes place when a voltage is applied to its surfaces. A… …   Universalium

• Touch screen filter — This is an article describing the EMI and Optics filters that can be manufactured and incorporated onto touch screens. A number of filters and light guides into touch panels to achieve a variety of applications. In addition, all of these… …   Wikipedia

• Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… …   Wikipedia

• Wavelet — A wavelet is a mathematical function used to divide a given function or continuous time signal into different frequency components and study each component with a resolution that matches its scale. A wavelet transform is the representation of a… …   Wikipedia

• Wadley Loop — The Wadley Loop circuit was designed by Dr. Trevor Wadley in the 1940 s and was first used for a stable Wavemeter. Overview In a traditional superheterodyne radio receiver, most oscillator drift and instability occurs in the first frequency… …   Wikipedia

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium