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A Novel Microstrip Reconfigurable Multimode Filter

A filter and microstrip technology, which is applied in the field of new microstrip reconfigurable multimode filters, can solve the problem of large device investment and achieve the effect of simple structure

Active Publication Date: 2019-11-22
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the same communication system, there will be multiple communication frequency bands. In order to realize this function, a relatively mature multi-group transceiver technology is used, but this technology requires a large investment in devices.

Method used

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  • A Novel Microstrip Reconfigurable Multimode Filter
  • A Novel Microstrip Reconfigurable Multimode Filter
  • A Novel Microstrip Reconfigurable Multimode Filter

Examples

Experimental program
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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0022] A novel microstrip reconfigurable filter of the present invention, such as figure 1 As shown, including the dielectric substrate 2, the dielectric substrate 2 is a double-sided copper-clad substrate in the prior art, with a thickness of 0.508 mm, a dielectric constant of 3.38, and a loss tangent of 0.0027. A metal floor 3 is provided on the bottom surface of the dielectric substrate 2, and a microwave circuit 1 is etched on the upper surface of the dielectric substrate 2. The microwave circuit 1 includes a first feed network, a multi-mode ring resonator, and a second feed network connected in sequence. , the first feed network, the multi-mode ring resonator and the second feed network fo...

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Abstract

The invention discloses a novel reconfigurable microstrip multimode filter. When forward voltage is added to direct-current bias voltage, a diode is conductive, a transmission line eleven and a transmission line thirteen as well as a transmission line twelve and the transmission line thirteen are conductive to each other, and filter passband center frequency is at high frequency; and when reverse voltage is added to the direct-current bias voltage, the diode is cut off, the transmission line eleven and the transmission line thirteen as well as the transmission line twelve and the transmission line thirteen are disconnected from each other, and the filter passband center frequency is at low frequency. The filter realizes passband frequency switching through conduction and cut-off of the PIN diode, and is simple in a structure.

Description

technical field [0001] The invention belongs to the technical field of millimeter waves and microwave devices, and in particular relates to a novel microstrip reconfigurable multimode filter. Background technique [0002] After entering the 21st century, wireless communication technology has developed rapidly, and wireless communication equipment can be seen everywhere. 4G (FDD-LTE, TDD-LTE) has been fully popularized. In order to meet the growing demand for connectivity, and with the development of technologies such as virtual reality, augmented reality and Internet of Things cloud computing, people have started the research and development of 5G. In the future, a series of new requirements such as lower price, lighter weight and larger capacity will be put forward for wireless devices. Filters are an integral part of wireless communication equipment. They have frequency selection characteristics and can filter out useful signals while suppressing unwanted signals. They ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
CPCH01P1/20381
Inventor 于兵杨斐李鹤鸣葛俊祥
Owner NANJING UNIV OF INFORMATION SCI & TECH