低通滤波器 COFDM 420-440Mhz 频率定制高通滤波器

$60.00

low-pass filter COFDM 420-440Mhz frequency customization high-pass filter

规范

频率范围	420～440MHz
插入损耗	≤1.5db
standing wave ratio	≤1.4
out-of-band suppression	≥90dB @other than 600MHz
Withstand power	10W¯¯
连接器	SMA-50K
外形尺寸	As shown in the picture

A low-pass filter is a device that allows signals with low frequencies to pass through while blocking or attenuating signals with high frequencies. People often use low-pass filters in wireless video transmitters to reduce interference from harmonics and other noise sources. They can also protect GPS and radio signals from being affected by the transmitter’s output power.

Different types of low-pass filters exist, such as ceramic, multilayer, electromechanical, and SAW filters. Each type has its advantages and disadvantages, depending on the application and the frequency range. When choosing a low-pass filter, some factors are insertion loss, 衰减, 带宽, impedance, and size.