Multiband stop digital filter design and implementition 多阻带多通带数字滤波器
Electromagnetic stop band structure is one of these structures 电磁阻带结构就其中之一。
Series for sheathed thermal resistance with thermowell and integral temperature transmitter - wzpk系列铠装热电阻带套管及一体化温度变送器
The scattering parameters of two proposed electromagnetic stop band filters have been fitted by this method 本文提出了两种电磁阻带结构滤波器，并用该方法拟合了它们的散射参数。
In this dissertation , characteristic impedance and effective permittivity of two well - known electromagnetic stop band structures have been fitted by this method 本文用该方法拟合了两个已有的电磁阻带结构的特性阻抗和有效介电常数。
Equivalent circuits of two proposed electromagnetic stop band filters have been developed . and their parameters have been optimized using this method 本文对两个新提出的电磁阻带结构滤波器建立了等效电路，并用该方法优化了相应的参数。
The specification is that the cutoff frequency must be more than 15mhz , the maximum passband ripple must be 0 . 2db and the minimum stopband attenuation must be 40db 该滤波器要求截止频率大于15mhz ，通带最大纹波为0 . 2db ，阻带最小衰减为40db 。
It also overcomed the dificulty to realize characteristics bpf with fractional bandwidth greater than about 5 % in the form of multi - metal insert waveguide filter 既提高了滤波器的阻带性能，又避免了单纯的多膜片结构能实现的滤波器带宽较小的缺点。
The performance of filters is not very good . the attenuation of stop - band is almost - 44db . the performance cannot satisfy the requirement for some application situation 其阻带衰减大约在- 44db ，对于一些对滤波器阻带性能要求较高的应用场合，这个数值是达不到要求的。
The research productions of this thesis have much reference value on the filter miniaturization , improve the performance of filter stopband and improve the efficiency of the filter design 该课题的研究成果对于滤波器的微型化,滤波器阻带抑制的改善,以及提高设计效率等方面都有较大参考价值。
