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Miniaturized high-suppression LTCC high-pass filter

A high-pass filter, high-pass filter circuit technology, applied in electrical components, multi-terminal pair networks, impedance networks, etc., to achieve the effect of low link signal noise

Pending Publication Date: 2022-08-05
苏州希拉米科电子科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The existing LTCC high-pass filter needs to be improved, miniaturized and achieve high rejection in the out-of-band low frequency band

Method used

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  • Miniaturized high-suppression LTCC high-pass filter

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Embodiment Construction

[0019] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and embodiments. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0020] The technical scheme of the specific implementation of the present invention is as follows:

[0021] The invention provides a miniaturized high-suppression LTCC high-pass filter, which adopts microwave low-loss dielectric ceramics, adds a certain proportion of adhesive, dispersant and solvent, and forms a green ceramic sheet through a casting process; The metal layer is printed, the multi-layer green ceramic sheets are stacked together, and then sintered into porcelain to obtain the finished filter; the filter is packaged in 0603 as a whole; the metal layer in the filter forms a high-pass filter circuit;

[0022] like figure 1 As sho...

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Abstract

The invention discloses a miniaturized high-inhibition LTCC (Low Temperature Co-Fired Ceramic) high-pass filter, which is characterized in that microwave low-loss dielectric ceramic is adopted, an adhesive, a dispersing agent and a solvent are added according to a certain proportion, and a raw ceramic chip is formed through a tape casting process; printing a metal layer on the surface of the green ceramic chip, laminating multiple layers of green ceramic chips together, and sintering into ceramic to obtain a finished filter; a metal layer in the filter forms a high-pass filter circuit; the high-pass filter circuit adopts a second-order design, two transmission zeros are formed outside a band, and out-of-band low-frequency band high suppression is achieved.

Description

technical field [0001] The present invention relates to a miniaturized high-suppression LTCC high-pass filter. Background technique [0002] A high-pass filter is a combination of devices such as capacitors, inductors, and resistors that allow signal components above a certain frequency to pass and greatly suppress signal components below the frequency. Its characteristics can be described by impulse response and frequency response in time domain and frequency domain, respectively. The latter is represented by a function with frequency as an independent variable. Generally, it is a complex variable function with a complex variable jω as an independent variable, and is represented by H(jω). Its modulus H(ω) and argument φ(ω) are functions of the angular frequency ω, which are called the "amplitude-frequency response" and "phase-frequency response" of the system, respectively, which represent the signal components of different frequencies in the excitation source. The amplit...

Claims

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Application Information

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IPC IPC(8): H03H7/01H03H1/00
CPCH03H7/0115H03H7/1741H03H1/00H03H2001/0085H03H2001/0078
Inventor 李凯陈国峰
Owner 苏州希拉米科电子科技有限公司
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