(function(){
let w = window.innerWidth;
function setHeaderCssVar() {
const headerEle = document.getElementById('shoplaza-section-header');
if(!headerEle){ return };
document.body.style.setProperty('--window-height', `${window.innerHeight}px`);
document.body.style.setProperty('--header-height', `${headerEle.clientHeight}px`);
const mdScorllHideEle = headerEle.querySelector('.header__mobile .header__scroll_hide');
if (mdScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-md', `${mdScorllHideEle.clientHeight}px`);
}
const pcScorllHideEle = headerEle.querySelector('.header__desktop .header__scroll_hide');
if (pcScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-pc', `${pcScorllHideEle.clientHeight}px`);
}
}
function handlResize() {
if(w == window.innerWidth){return};
w = window.innerWidth;
setHeaderCssVar();
};
function init(){
setHeaderCssVar();
window.removeEventListener('resize', window._theme_header_listener)
window._theme_header_listener = handlResize;
window.addEventListener('resize', window._theme_header_listener);
}
init();
})();
${data.index + 1}/6
Description
Quartz Crystal RF Bandpass Filter For Special Instruments Narrowband Filter 10.7MHz+7KHz 10.7M Filter
Product Description
Crystal filter
1. Screening: The crystal used is not suitable for the filter (resonance frequency, body quality detection, 25% can be used). 2. Pairing: Crystals must be paired to achieve the best results (only 30% of the batch can be paired successfully). 3. Design: Crystal filter circuit design (the input impedance of the crystal changes greatly, matching circuit design). 4. Commissioning: Each crystal has different characteristics. It must be accurately debugged according to the impedance characteristics. 5. Instrument: The crystal filter bandwidth is extremely narrow, and special instruments are needed. Generally, the oscilloscope and spectrum analyzer cannot be used.
Product Paramenters
1
Working frequency: 10.7MHz ±7KHz
2
Dimensions: 24 × 47mm (without connectors)
3
Out-of-band rejection: >80dB (BW<200KHz)
4
>60dB (BW<11KHz)
4
Connector form: SMA-KE (shape hole can be customized)
5
In-band fluctuation:
6
System impedance: 50 ohms
7
Insertion loss: 2.0dB (typical)
Precautions
1. Input and output direction ports are 50 ohms, only suitable for 50 ohm system use
2. Components are precision paired and require professional equipment to debug
3. Any modification may damage the filter
4. The crystal is a precision device. It is strictly forbidden to bump, vibrate, overheat and cold, and warm.
5. Each filter is manually precision debugging, slightly different, do not like to shoot