C-waveband high-performance LTCC (low temperature co-fired ceramic) low pass filter
A low-pass filter, high-performance technology, applied in the microwave field, can solve problems such as large size, achieve the effect of small size, good in-band characteristics, and wide suppression range
Inactive Publication Date: 2014-12-17
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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Problems solved by technology
Although traditional filters made of microstrip lines, waveguides and cavities can achieve low loss, they are often large in size
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[0010] Such as figure 1 , 2 As shown, the C-band high-performance LTCC low-pass filter has a structure including an input port P1, an output port P2, external side printed ground G on both sides, a first inductance L1, a second inductance L2, a third inductance L3, The first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the first ground GND1, the second ground GND2, and the printed mark M, wherein The input terminals of the first inductor L1 and the second capacitor C2 are connected to the input port P1; the output terminals of the first inductor L1 and the second capacitor C2 are connected to the input via of the third capacitor C3; the second inductor L2 and the fourth The input terminal of the capacitor C4 is connected to the input via hole of the third capacitor C3; the output terminal of the second inductor L2 and the fourth capacitor C4 is connected to the...
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The invention discloses a C-waveband high-performance LTCC (low temperature co-fired ceramic) low pass filter which structurally comprises an input port P1, an output port P2, external side print ground G on two sides, a first inductor L1, a second inductor L2, a third inductor L3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, first ground GND 1, second ground GND 2 and a print mark M. The C-waveband high-performance LTCC low pass filter has the advantages that cutoff frequency of the low pass filter is 5.0GHz, and maximum stop-band inhibiting range can reach 15GHz; the low pass filter structurally comprises three parallel resonance units, so that out-of-band inhibiting degree is increased effectively, and performance of the low pass filter is improved greatly. The C-waveband high-performance LTCC low pass filter has the advantages of compact structure, small size, good pass-band characteristic, high out-of-band inhibiting degree, wide stop-band inhibiting range and the like; an SMD (surface mount device) packaging form is adopted, so that the low pass filter is convenient in integration and wide in application prospect.
Description
technical field [0001] The invention relates to a C-band high-performance LTCC low-pass filter based on LTCC technology, which has compact structure, good in-band characteristics, high out-of-band suppression and wide stop band range, and belongs to the field of microwave technology. Background technique [0002] With the rapid development of wireless communication, the communication system is developing towards the trend of lightness, compactness and high performance. As an important passive device in radio frequency circuits and systems, low-pass filters must be designed with superior performance, low loss, and small size. Although filters made traditionally using microstrip lines, waveguides, and cavities can achieve low loss, they are often large in size. [0003] Using LTCC multilayer ceramic technology is an effective way to solve the above problems. LTCC technology has been used to reduce the size of device structures and is widely used in radio frequency passive de...
Claims
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IPC IPC(8): H03H7/01
Inventor 郑琨徐利
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD