Laminated sheet type ceramic delay line

Abstract

The invention relates to a laminated sheet type ceramic delay line, which belongs to the technical field of electronic components. The delay line comprises a plurality of metal wire delay cell laminated bodies and a plurality of metal ground electrode laminated bodies, wherein the plurality of the metal wire delay cell laminated bodies and the plurality of the metal ground electrode laminated bodies are laminated together in a staggered mode; a plurality of the metal wire delay cells are connected in series in turn and are connected to the surface of a device through metallized through holes;and the surface of the device is provided with a signal input end, a plurality of signal output ends, a ground electrode port and a port mark. With the adoption of a low temperature co-fired ceramic (LTCC) technology, a plurality of the metal delay line cells which are connected in series in turn are integrated in a lamination mode, so that the volume and the weight of the delay line are effectively reduced, and the delay line has the characteristics of good insulation property, great merit factors, high self-resonance frequency, wide working bandwidth and the like; and simultaneously, metal delay cells are embedded in a dielectric ceramic body to improve the reliability of the delay line so that the delay line can adapt to various different working environments.

Description

technical field [0001] The invention belongs to the technical field of electronic components, and relates to a delay line, in particular to a laminated delay line with miniaturization, wide frequency band, long delay and integration of multiple sets of taps. Background technique [0002] Delay lines are widely used in more sophisticated oscilloscopes, color TVs, electronic computers, aviation, radar and other fields, and are one of the most commonly used devices in microwave systems. The traditional delay line is large in size, and generally only has a single-layer design. For example, the delay function is realized by using planar folded lines on the circuit substrate, and the performance index of the delay line mainly depends on the length and phase accuracy of the delay line. In order to achieve a certain For the delay time, the only way to increase the volume of the device is to achieve a longer delay line length, resulting in higher device costs and lower reliability, w...

AI Technical Summary

Problems solved by technology

The traditional delay line is large in size, and generally only has a single-layer design. For example, the delay function is realized by using planar folded lines on the circuit substrate, and the performance index of the delay line mainly depends on the length and phase accuracy of the delay line. In order to achieve a certain Delay time, only increase the volume of the device to achieve a longer delay line length, resulting in increased device cost and reduced reliability, which does not meet the trend of communication products developing towards short, small, light and thin

On the other hand, if the system needs to implement different delay functions in multiple groups of signal paths, it is necessary to use multiple groups of delay units, such as a delay line with a single-layer design, because it only has a single output port, it needs Placing a delay line greatly occupies the area of ​​the circuit, which is not conducive to the miniaturization of the system; the delay line with multiple output terminals is generally a planar two-dimensional structure, and the delay unit is composed of capacitors and inductors in the form of discrete devices in the device. Large size and low reliability. If planar folded wires are used to implement each delay unit, in order to avoid electromagnetic coupling interference between folded wires, a certain distance needs to be reserved between adjacent two wires, which will also take up a large amount of time. circuit area

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