WebSep 7, 2012 · The mechanical model of a crystal oscillator is a simple compliance (spring)—inertia (mass)—damping (dashpot) system. A simple linear model equates two forces: spring force and frictional force... KVG provides a wide spectrum of standard and custom specific filters for telecommunication, navigation, avionics and precise measurement for filters in the frequency range of 1 MHz to 200 MHz. In house filter design and crystal manufacturing combined with new technologies like HFF-crystals … See more Most of the applications imply an exact specification of the filter. They can be summarized as follows: 1. Size, case 2. Filter frequency 3. Bandwidth, stopband attenuation, ripple, group delay, intermodulation etc. … See more The crystal filters supplied by KVG are mainly band-pass filters with Chebyshev-characteristic (theoretical ripple 0.1 dB). Depending on the … See more Antenna filters, used as preselection or as front-end filters in the VHF-range, suppress unwanted signals. The most important characteristics of these filters are low insertion loss … See more In order to get a low distortion transmission of signals and pulses (digital signals), crystal filters with a linear phase response or low group delay distortion are necessary. However, these linear phase filters (Gaussian or … See more

RF filter design – from resonators to filters OnScale

WebWe claim:1. A homodyne radio receiver for receiving digital signals frequency modulated on an R.F. carrier having a predetermined deviation frequency, said receiver comprising:first and second signal paths to which received radio signals are applied in quadrature;a local oscillator circuit for generating a local oscillator signal;means in each of said signal paths … WebCyber Center 200 Grace Hopper Lane Suite 2600 Augusta, GA 30901 762-259-7416 (phone) st marylebone girls\u0027 school in london

Crystals for IF Filters

WebJun 2, 2016 · 1) Crystals aren't designed for parallel or series resonance, they have both ! It depends on how you use them what will be the dominant mode of operation. 2) that depends on the crystal, I was working with a 25 MHz crystal recently and there the frequency difference was less than 1 kHz. WebMar 9, 2024 · The previous designer had started with a class-C-type multiplier and then had to filter out all the even and odd harmonics. Since the input clock had a clean 50% duty-cycle (virtually no even harmonics), I redesigned the thing, using a 155 MHz SAW filter and a post-amplifier/squarer. Way cleaner output that way. The goal was to minimize jitter. WebIn discriminators, particularly those used to control the frequency of an oscillator, it is desirable that the discriminator remain tuned to a fixed band of frequencies without drifting during the... st marylebone girls school