Dual-band reconfigurable filter based on structure of PIN diode loading on SIR
A PIN diode and reconstruction filter technology, applied in the field of dual-band reconfigurable filters, can solve the problems of inability to meet multi-band and multi-system fuze systems, and achieve a large passband frequency hopping range and a compact overall structure. Effect
Active Publication Date: 2018-11-16
NANJING UNIV OF SCI & TECH
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Problems solved by technology
However, most of the research on reconfigurable filters currently reported uses the method of loading tunable capacitors to achieve small-range tuning of frequencies in the L and S bands, which is far from meeting the requirements of multi-band and multi-system fuze systems.
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Embodiment 1
[0032] like figure 1 As shown, the dual-band reconfigurable filter based on the SIR-loaded PIN diode structure in this embodiment includes a dielectric substrate. Here, the Rogers4350 substrate can be used, and its relative permittivity is 3.66, and the thickness is 1.524mm. Others can also be used. specifications of the substrate. A microstrip line circuit is printed on the dielectric substrate, and the microstrip line circuit is made of a material with good conductivity. The material here is copper with a thickness of 1 ounce, and a gold plating process is adopted. The copper-clad metal under the dielectric substrate serves as the ground of the entire filter.
[0033] like figure 2 As shown, the microstrip line circuit includes three U-shaped SIR resonators, two signal coupling lines, impedance matching lines, four PIN switching diodes, open terminal lines, three impedance lines and three matching loads. Among them, the first SIR resonator is a symmetrical U-shaped struc...
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Abstract
The invention provides a dual-band reconfigurable filter based on a structure of PIN diode loading on SIR. The filter comprises a dielectric substrate, a microstrip line circuit printed on the substrate, and a metal copper cladding layer being aranged under the dielectric substrate and being grounded. The upper microstrip line circuit consists of three U-shaped SIR resonators and a signal couplingline; an SIR resonator I is arranged above the coupling line; and an SIR resonators II and an SIR resonators III are distributed symmetrically below the signal coupling line. A PIN diode is loaded onthe resonator to connect a matching load or impedance line; and the reconfigurable function of the filter is realized by regulating the PIN switching diode. The filter has characteristics of large passband frequency hopping range, compact structure, low stray frequency, and high isolation of two frequency bands.
Description
technical field [0001] The invention relates to the technical field of reconfigurable filters, in particular to a dual-band reconfigurable filter based on an SIR-loaded PIN diode structure. Background technique [0002] With the rapid development of electronic countermeasures, in order to improve the anti-interference ability of the fuze system, modern fuze technology is developing towards the trend of multi-band and multi-system. For different working frequency bands and working modes, the transceiver front-end needs to use multiple filter banks composed of different center frequencies for frequency selection. The disadvantage of the filter bank is that it complicates the system architecture, increases the system size, and brings significant loss, which does not conform to the current mainstream trend of miniaturization, integration, and low energy consumption of the front-end circuit of the transceiver. Therefore, it is hoped that one filter can realize the functions of m...
Claims
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Login to View More IPC IPC(8): H01P1/20
CPCH01P1/201
Inventor 肖泽龙许辉达许建中吴礼王静高晓堃张晋宇
Owner NANJING UNIV OF SCI & TECH