L-waveband miniature multilayer low-temperature co-firing ceramic balance filter

A low-temperature co-fired ceramic and balanced filter technology, which is applied to waveguide-type devices, circuits, electrical components, etc., can solve the problems of the difficulty of making balanced filters small, large insertion loss, and unsatisfactory amplitude and phase characteristics. , to achieve the effect of simple circuit structure, low cost and light weight

Inactive Publication Date: 2013-12-25
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0002] At present, most of the balanced filters designed with low temperature co-fired ceramics (LTCC for short) technology adopt a multi-layer complex structure of cascaded combination of balun and filter with concentrated parameter structure, and most of th

Method used

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  • L-waveband miniature multilayer low-temperature co-firing ceramic balance filter
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  • L-waveband miniature multilayer low-temperature co-firing ceramic balance filter

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Embodiment Construction

[0015] The L-band miniature multi-layer low-temperature co-fired ceramic balanced filter of the present invention comprises a surface-mounted 50-ohm impedance input port, an input stripline, an output stripline, an input-end loading capacitor and an output-end loading capacitor; the input port and the input Stripline connection, the two output ports are respectively connected to two centrally symmetrical output striplines, the other end of the input stripline is connected to the external ground electrode, and the other end of the two output striplines is also connected to the external ground electrode The grounded shield is used between the stripline and the capacitor to isolate the signal.

[0016] Refer to attached Figure 1~5 The present invention is described in detail:

[0017] Such as figure 1 The shown L-band miniature multilayer low temperature co-fired ceramic balanced filter includes multilayer ceramic dielectric laminates, external input and output electrodes, gro...

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Abstract

The invention discloses an L-waveband miniature multilayer low-temperature co-firing ceramic balance filter. The L-waveband miniature multilayer low-temperature co-firing ceramic balance filter structurally and mainly comprises one input electrode, two output electrodes, two protective layers, two layers of strip lines, two layers of capacitor plates and four layers of metal shield plates. A balance output filter converted in different frequency, different pass-band width and different impedance can be designed by optimizing the two layers of coupling strip lines and a grounding capacitor, and functions of the balance output filter are equivalent to combined functions of one filter and one Balun. Compared with traditional multiple-layer balance filters, the L-waveband miniature multilayer low-temperature co-firing ceramic balance filter has the advantages of being simple in structure, small in size, prone to batch production and high in phase balance degree and amplitude balance degree.

Description

technical field [0001] The invention relates to a device combined with an equivalent balun and a filter, in particular to a balanced filter with an L-band micro-multilayer low-temperature co-fired ceramic structure. Background technique [0002] At present, most balanced filters designed with low-temperature co-fired ceramics (LTCC for short) technology adopt a multi-layer complex structure of a cascaded combination of baluns and filters with a concentrated parameter structure, and most of them need to use through-hole technology to realize the connection of conductors between layers. , so the size of the balanced filter is difficult to make small, while the insertion loss is large, and the amplitude and phase characteristics are not satisfactory. Such as the existing balanced output filter (application number: 200620108151.X publication number: 200956398). Contents of the invention [0003] In order to solve the above-mentioned problems of LTCC balanced filter design. T...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/203
Inventor 罗鸣戴永胜顾家陈相治李雁施淑媛冯辰辰陈龙邓良方思慧朱丹朱正和
Owner NANJING UNIV OF SCI & TECH
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