Super high frequency (SHF) wave band high-performance filter bank based on low temperature co-fired ceramic (LTCC) and defected ground structure (DGS) technology

A filter bank and microwave filter technology, applied in waveguide devices, circuits, electrical components, etc., can solve the problems affecting the use range of SHF band filter banks, restricting the development of filter banks, and not being able to bear power enough to achieve Achieve mass production, good out-of-band suppression, and low insertion loss

Inactive Publication Date: 2015-11-18
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, insufficient power and poor standing wave performance will affect the scope of use of SHF band filter banks and limit the development of filter banks

Method used

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  • Super high frequency (SHF) wave band high-performance filter bank based on low temperature co-fired ceramic (LTCC) and defected ground structure (DGS) technology
  • Super high frequency (SHF) wave band high-performance filter bank based on low temperature co-fired ceramic (LTCC) and defected ground structure (DGS) technology
  • Super high frequency (SHF) wave band high-performance filter bank based on low temperature co-fired ceramic (LTCC) and defected ground structure (DGS) technology

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Embodiment 1

[0022] The size of the filter part of the SHF band high-performance filter bank based on LTCC and DGS technology in the present invention is only 3.23mm×3.23mm×1.53mm and 1.63mm×3.23mm×1.53mm, and the single-pole double-throw switch chip WKD0016H has a frequency range of 6-18GHz, the insertion loss is 2dB, the isolation is 40dB, the input VSWR is 1.3:1, and the external dimensions are 1.1mm*1.4mm*0.1mm. combine Figure 2-5 , the present embodiment is based on the performance of the SHF band high-performance filter bank of LTCC and DGS technology as follows: the passband bandwidth is respectively 7.5-10GHz and 11.5-14GHz, and the amplitude-frequency characteristics of the two output ports in the passband are better, and the input port The return loss is better than 16dB. Depend on figure 2 It can be seen that the insertion loss of the first microwave filter Filter1 in 7.5-10GHz is relatively small; by image 3 As shown, when the switch is connected to the first output selec...

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Abstract

The present invention discloses a super high frequency (SHF) wave band high-performance filter bank based on the low temperature co-fired ceramic (LTCC) and defected ground structure (DGS) technology. The filter bank comprises a single-pole double-throw switch at a SHF wave band and two filters with two different frequency bands; the single-pole double-throw switch comprises two ports which are a signal input port, a first signal output port, a second signal output port, a first output selection control end and a second output selection control end; and the first signal output port is connected with an input port of a first microwave filter while the second signal output port is connected with an input end of a second microwave filter. The two filters both adopt a stripline structure with five-level resonance, and are realized by adopting the LTCC technique. Excellent properties such as small insertion losses, small passband fluctuation, transitional zone steepness and excellent out-of-band rejection of the two filters are combined, and the filter bank is excellent in stability, reliable in electric performance, and applicable to separation treatment of different frequency portions in one circuit of signal or to other occasions with strict requirements and corresponding systems.

Description

technical field [0001] The invention relates to the technical field of filter banks, in particular to an SHF band high-performance filter bank based on LTCC and DGS technologies. Background technique [0002] In recent years, with the rapid development of miniaturization of mobile communication, satellite communication and national defense electronic systems, high performance, low cost and miniaturization have become the development direction of the microwave / radio frequency field. The performance, size and reliability of microwave filters Both sex and cost have put forward higher requirements. In some cutting-edge defense equipment, the current frequency bands are quite crowded, so cutting-edge equipment such as satellite communications are developing towards the millimeter-wave band, so microwave millimeter-wave band filters have become key electronic components in the receiving and transmitting branches of this band, described The main indicators of the performance of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 许心影周衍芳戴永胜陈烨刘毅乔冬春李博文
Owner NANJING UNIV OF SCI & TECH
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