OSFDPACL EXP NO: 12 - Microwave IC Filter Characteristics PPT скачать в хорошем качестве

OSFDPACL EXP NO: 12 - Microwave IC Filter Characteristics PPT

Welcome to the Online Spoken Faculty Development Program on Advanced Communication Laboratory organized by the Department of ECE, PSNA College of Engineering and Technology, Dindigul 624622, Tamilnadu, India. In this video course instructor Dr.K.Meena alias Jeyanthi, Professor/ECE Elaborates EXP NO: 12 - Microwave IC Filter Characteristics. In this experiment four types of filter that can be defined. Each different type rejects or accepts signals in a different way, and by using the correct type of RF filter it is possible to accept the required signals and reject those that are not wanted. The four basic types of RF filter are: Low pass filter: As the name indicates a low pass filter is a form of filter that only allows through the lower frequencies. Typically it is nominally flat until the cut-off point, and then it rolls off. High pass filter: The high pass filter is in many ways the inverse of the low pass filter. It only allows signals through that are higher than the cut-off frequency. Above this point, it is nominally flat and below the RF filter cut-off frequency the response falls away at a rate determined by the order of the filter. Bandpass filter: The bandpass RF filter only allows through signals within certain frequencies. Above and below the cut-off frequencies, the signals will be attenuated and within the accepted band of radio frequencies, signals will be passed through. Band reject filter: The band reject filter is the opposite of a bandpass filter, as it rejects signals within a certain RF band. This form of RF filter is often used to remove unwanted signals that are known to exist in a system.