A Balanced Strip Dielectric Substrate Integrated Filter
A dielectric substrate, balanced technology, applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problems of high cost and inability to realize self-encapsulation, and achieve the effect of low loss characteristics, high integration and low cost
Active Publication Date: 2022-05-17
NANTONG UNIVERSITY +1
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Problems solved by technology
[0004] Purpose of the invention: Aiming at the above-mentioned prior art, a balanced strip dielectric substrate integrated filter is proposed to solve the problem that when the existing balanced dielectric filter is realized through a ceramic dielectric combined with a metal cavity structure, the cost is high and self-encapsulation cannot be realized The problem
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[0012] The present invention will be further explained below in conjunction with the accompanying drawings.
[0013] like figure 1 As shown, a balanced strip-shaped dielectric substrate integrated filter includes a high dielectric constant dielectric substrate 1 and a first low dielectric constant dielectric substrate symmetrically stacked on the upper and lower sides of the high dielectric constant dielectric substrate 1. 2. The second low dielectric constant dielectric substrate 3 and the metal ground 4 . The high dielectric constant dielectric substrate 1 includes two strip-shaped dielectric blocks 11 located at the core and two fixed strips 12 located on two sides respectively. The two strip-shaped dielectric blocks 11 are arranged in parallel and spaced apart, and two parallel rectangular grooves 111 are opened in the middle of each strip-shaped dielectric block 11 . Both ends of the two strip-shaped dielectric blocks 11 are respectively connected to the fixing strips 1...
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Abstract
The invention discloses a balanced strip dielectric substrate integrated filter, which comprises a high dielectric constant dielectric substrate, and a first low dielectric constant dielectric substrate symmetrically stacked on the upper and lower surfaces of the high dielectric constant dielectric substrate, The second low dielectric constant dielectric substrate and metal ground. Compared with the existing balanced dielectric filter, the present invention adopts working in TM 111 The module is mainly based on the tape-shaped dielectric block loaded with double slots, combined with the upper and lower air slot structure and the packaging substrate to form a high-Q tape-shaped dielectric substrate integrated resonator with packageable characteristics, which solves the existing balanced dielectric filter When the filter is realized by a ceramic dielectric combined with a metal cavity structure, the cost is high and the problem of self-encapsulation cannot be realized. A balanced strip dielectric substrate integrated filter with low loss characteristics is realized, and it has self-encapsulation, high integration, low Advantages of cost.
Description
technical field [0001] The invention relates to the field of microwave communication, in particular to a balanced strip-shaped dielectric substrate integrated filter. Background technique [0002] In the balanced system, compared with the traditional single-ended filter, the balanced filter can not only directly connect with other balanced circuits, but also avoid adding multiple baluns, which is conducive to the miniaturization, high performance and low cost of microwave circuits. Cost development trend, and can improve the system's anti-interference ability, harmonic suppression, reliability, cross-polarization and so on. Therefore, balanced filters have received extensive attention. In addition, dielectric resonators have become a research hotspot in recent years due to their advantages of high Q value, high temperature stability and high power capacity. Therefore, it is of great research value and significance to apply dielectric resonators to balanced filters to const...
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IPC IPC(8): H01P1/20
CPCH01P1/20H01P1/20318H01P7/10
Inventor徐凯王梦丹施金蔡蓉张威张凌燕
OwnerNANTONG UNIVERSITY