Filter device with adjustable filter parameters
A technology of filtering parameters and filtering devices, applied in digital technology networks, impedance networks, electrical components, etc., can solve the problems of poor portability and versatility of filtering devices, and achieve the effect of good portability and versatility
Active Publication Date: 2015-08-12
COMBA TELECOM SYST CHINA LTD
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[0004] The purpose of the present invention is to provide a filter device with adjustable filter parameters, which solves the problem of poor portability and versatility of the existing filter device
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[0016] The filtering device with adjustable filtering parameters of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. see figure 1 As shown, including a control unit, a storage unit and a filter unit;
[0017] Wherein, the control unit is used to output an instruction signal to the filtering unit; the storage unit is used to store at least two groups of filtering parameters; the filtering unit is used to read corresponding filtering parameters from the storage unit according to the instruction signal of the control unit, and filtering the signal input to the filtering channel according to the filtering parameters.
[0018] In the filter device with adjustable parameters based on the above-mentioned structure of the present invention, the control unit outputs an instruction signal through the set related parameters, controls the filter unit to read the filter parameters to filter the signal input to the filte...
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The invention provides a filtering parameter adjustable filtering device, which comprises a control unit, a memory unit and a filter unit, wherein the control unit is used for outputting an instruction signal to the filter unit; the memory unit is used for storing at least two groups of filtering parameters; and the filter unit is used for reading corresponding filtering parameters from the memory unit according to the instruction signal of the control unit, and filtering a signal input to a filtering channel according to the filtering parameters. The filtering parameter adjustable filter device provided by the invention has the advantages that the filtering parameters are variable, the variation of the filtering parameters can be adapted to different filter coefficients, and the filtering parameters can also be changed in real time according to system requirements so as to meet the requirements of different band widths, out of band rejection and time delay, and the filter device has relatively good portability and generality.
Description
technical field [0001] The invention relates to a filtering device, in particular to a filtering device with adjustable filtering parameters. Background technique [0002] With the development of communication systems, digital technology has been more and more widely used, and the use of digital technology to implement filtering functions has become more and more common. Digital filters are often used to modify or change the characteristics of signals in the time domain or frequency domain. In the communication system, the main function of the digital filter is to ensure the normal passage of the useful in-band signal and filter out the useless out-of-band signal. At present, the bandwidth of different communication protocols is different. For example, the maximum single-carrier bandwidth of single-carrier FDD LTE is 20MHz, the single-carrier WCDMA signal bandwidth is 5M, and the single-carrier GSM bandwidth is only 200k. When the standards are different, the filter needs ...
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IPC IPC(8): H03H17/02
Inventor 吴月辉张文冯文龙
Owner COMBA TELECOM SYST CHINA LTD