毫米波LTCC滤波器的研究+文献综述
关键词 LTCC， 毫米波滤波器， 带状线， 小型化。
Title Research on millimeter-wave LTCC filter
Recently, millimeter-wave wireless communication has become popular to
meet the increasing demand for ultrahigh-speed communication. On the same
time, with the rapid development of the national economy and the rapid
advance of national defense science and technology, aviation, aerospace,
radar systems, inpidual soldier intelligent weapons and airborne radio
system, etc. request high performance and miniaturization microwave
devices. The high-performance, low-cost, and miniaturized chip-type
components using in microwave / millimeter-wave applications are the
current trend.
Filters are widely used in microwave / millimeter-wave communications,
radar navigation, electronic countermeasures, satellite communications,
missile guidance, testing instruments and other systems. It is an important
and indispensable device in the microwave and millimeter-wave systems, its
performance often directly affects the performance of the entire
communication system. Passive multilayer filter based on LTCC for radio
frequencies meets those requirements very well.
The design is in the guidance of basic filter theory. The two strip-line
band pass filters are designed by using LTCC technology. In order to achieve
a high stop-band attenuation, one way is to add the orders of the filter
as much as possible; the other is to select a high stop-band attenuation
filter modes, such as, Chebyshev filter or Ellipse filter. However, adding
the orders of the filter will increase the size of the filter and
manufacturing cost, moreover, the phase character of the Chebyshev filter
and Ellipse filter is not good enough. After all, the two band-pass filters