CN202134640U - A Symmetrical "T" Type Bandpass Filter Based on Microstrip Line Structure - Google Patents
A Symmetrical "T" Type Bandpass Filter Based on Microstrip Line Structure Download PDFInfo
- Publication number
- CN202134640U CN202134640U CN201120111144U CN201120111144U CN202134640U CN 202134640 U CN202134640 U CN 202134640U CN 201120111144 U CN201120111144 U CN 201120111144U CN 201120111144 U CN201120111144 U CN 201120111144U CN 202134640 U CN202134640 U CN 202134640U
- Authority
- CN
- China
- Prior art keywords
- symmetrical
- microstrip line
- filter based
- pass filter
- shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims 10
- 230000008878 coupling Effects 0.000 abstract description 18
- 238000010168 coupling process Methods 0.000 abstract description 18
- 238000005859 coupling reaction Methods 0.000 abstract description 18
- 239000000758 substrate Substances 0.000 abstract description 8
- 230000010354 integration Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
本实用新型公开了一种基于微带线结构的对称“T”型带通滤波器。它包括信号输入端、信号输出端、均匀传输线、对称“T”型耦合结构、基体，在基体四周设有均匀传输线形成闭合回路，基体上下两侧中心对称设有“T”型耦合结构，基体的左右两侧分别设有信号输入端和信号输出端。本实用新型具有频率多选择性、结构简单、尺寸小、体积小、重量轻、节约材料、便于制作及易于集成、频带范围为2GHz～3GHz。
The utility model discloses a symmetrical "T" type band-pass filter based on a microstrip line structure. It includes a signal input terminal, a signal output terminal, a uniform transmission line, a symmetrical "T"-shaped coupling structure, and a substrate. A uniform transmission line is arranged around the substrate to form a closed loop. A "T"-shaped coupling structure is symmetrically arranged on the upper and lower sides of the substrate. There are signal input terminals and signal output terminals respectively on the left and right sides of the device. The utility model has the advantages of multiple frequency selectivity, simple structure, small size, small volume, light weight, material saving, easy manufacture and integration, and a frequency range of 2GHz to 3GHz.
Description
技术领域 technical field
本实用新型涉及滤波器，尤其涉及一种基于微带线结构的对称“T”型带通滤波器。 The utility model relates to a filter, in particular to a symmetrical "T" type bandpass filter based on a microstrip line structure. the
背景技术 Background technique
滤波器是通信工程中的重要器件，其主要功能是抑制不需要的信号。微波滤波器在无线通信及信号处理中起着及其重要的作用，它具有过滤使用频率的信号和抑制干扰信号的功用。随着无线通信向更高频段的发展，工作在多个频段的微波滤波器在通信系统中显得越来越重要的作用，性能良好的滤波器具有极低的插入损耗、优异的频率选择特性、能充分利用频率资源，扩充系统容量、很好地抑制带外信号的干扰、改善通信质量。带通滤波器是使由上边频和下边频确定的频带内的信号通过，而对频带以外的信号进行抑制的重要功能器件。发射和接收信号的质量主要由滤波器的特性决定。一般而言，微波滤波器必须具备一定的带宽和较高的滤波质量。 Filter is an important device in communication engineering, and its main function is to suppress unwanted signals. Microwave filters play an extremely important role in wireless communication and signal processing. It has the function of filtering the signal of the frequency used and suppressing the interference signal. With the development of wireless communication to higher frequency bands, microwave filters working in multiple frequency bands are playing an increasingly important role in communication systems. Filters with good performance have extremely low insertion loss, excellent frequency selection characteristics, It can make full use of frequency resources, expand system capacity, well suppress the interference of out-of-band signals, and improve communication quality. The band-pass filter is an important functional device that passes the signal in the frequency band determined by the upper and lower frequency bands, and suppresses the signals outside the frequency band. The quality of the transmitted and received signal is mainly determined by the characteristics of the filter. Generally speaking, microwave filters must have a certain bandwidth and high filtering quality. the
近年来，随着无线通信需求的不断增加，多频通信设备逐步走入人们的生活。在传统的多频通信系统中，每一个通信系统都有其独立的天线、滤波器等器件，造成整个系统体积和损耗都比较大。双通带的设计方法主要有滤波器组合构成双通带，需要引入额外的匹配电路，不但增大了整个滤波器的体积，而且造成额外的损耗；利用Zolotarev函数综合构成双通带，但该方法无法控制两个通带之间的衰减度；利用滤波器的寄生通带，该方法特别适用于WLAN(Wireless Local Area Network)的2.4GHz和5.2GHz频段应用；零极点综合法，这些方法都是基于数值优化算法，其收敛性可能得不到保证，当设计性能较高的双通带滤波器时，其有效性将受到严重挑战。 In recent years, with the increasing demand for wireless communication, multi-frequency communication equipment has gradually entered people's lives. In a traditional multi-frequency communication system, each communication system has its own independent antenna, filter and other components, resulting in relatively large volume and loss of the entire system. The design method of dual-passband mainly consists of filter combination to form dual-passband, which needs to introduce additional matching circuit, which not only increases the volume of the whole filter, but also causes additional loss; Zolotarev function is used to synthesize dual-passband, but the The method cannot control the attenuation between the two passbands; using the parasitic passband of the filter, this method is especially suitable for the 2.4GHz and 5.2GHz frequency band applications of WLAN (Wireless Local Area Network); the zero-pole synthesis method, these methods are It is based on a numerical optimization algorithm, and its convergence may not be guaranteed. When designing a dual-passband filter with high performance, its effectiveness will be seriously challenged. the
发明内容 Contents of the invention
本实用新型的目的是克服现有技术的不足，提供一种基于微带线结构的对称“T”型带通滤波器。 The purpose of the utility model is to overcome the deficiencies of the prior art and provide a symmetrical "T" type bandpass filter based on a microstrip line structure. the
基于微带线结构的对称“T”型带通滤波器包括信号输入端、信号输出端、均匀传输线、对称“T”型耦合结构、基体，在基体四周设有均匀传输线形成闭合回路，基体上下两侧中心对称设有“T”型耦合结构，基体的左右两侧分别设有信号输入端和信号输出端。 The symmetrical "T"-shaped bandpass filter based on the microstrip line structure includes a signal input terminal, a signal output terminal, a uniform transmission line, a symmetrical "T"-shaped coupling structure, and a substrate. A uniform transmission line is arranged around the substrate to form a closed loop. A "T"-shaped coupling structure is symmetrically arranged on both sides, and a signal input terminal and a signal output terminal are respectively provided on the left and right sides of the substrate. the
所述的均匀传输线(3)的微带线的总长度为358mm～362mm。所述的均匀传输线(3) 的微带线闭合回路的长度为99mm～101mm。所述的均匀传输线(3)的微带线闭合回路的宽度为80mm～81mm。所述的均匀传输线(3)的微带线的宽度为1mm～2mm。所述的对称“T”型耦合结构(4)的微带线的宽度为1mm～2mm。所述的对称“T”型耦合结构(4)的对称间距为10mm～12mm。所述的对称“T”型耦合结构(4)的“T”型总高度为44mm～45mm。所述的对称“T”型耦合结构(4)的等效阻值为50Ω。所述基体(5)材料为Taconic TLT-6，其介电常数是2.65，基体厚度是3mm。 The total length of the microstrip line of the uniform transmission line (3) is 358mm-362mm. The length of the microstrip closed loop of the uniform transmission line (3) is 99 mm to 101 mm. The microstrip closed loop of the uniform transmission line (3) has a width of 80 mm to 81 mm. The width of the microstrip line of the uniform transmission line (3) is 1 mm to 2 mm. The width of the microstrip line of the symmetrical "T" type coupling structure (4) is 1 mm to 2 mm. The symmetrical pitch of the symmetrical "T"-shaped coupling structure (4) is 10 mm to 12 mm. The total height of the "T" shape of the symmetrical "T" shape coupling structure (4) is 44mm-45mm. The equivalent resistance of the symmetrical "T" type coupling structure (4) is 50Ω. The material of the matrix (5) is Taconic TLT-6, its dielectric constant is 2.65, and the thickness of the matrix is 3mm. the
本实用新型具有频率多选择性、结构简单、尺寸小、体积小、重量轻、节约材料、便于制作及易于集成、频带范围为2GHz～3GHz。 The utility model has the advantages of multiple frequency selectivity, simple structure, small size, small volume, light weight, material saving, easy manufacture and integration, and a frequency range of 2GHz to 3GHz. the
附图说明 Description of drawings
图1是基于微带线结构的对称“T”型带通滤波器结构示意图； Figure 1 is a structural schematic diagram of a symmetrical "T" type bandpass filter based on a microstrip line structure;
图2是基于微带线结构的对称“T”型带通滤波器性能曲线。 Figure 2 is a performance curve of a symmetrical "T" type bandpass filter based on a microstrip line structure.
具体实施方式 Detailed ways
如图1所示，基于微带线结构的对称“T”型带通滤波器包括信号输入端1、信号输出端2、均匀传输线3、对称“T”型耦合结构4、基体5，在基体5四周设有均匀传输线3形成闭合回路，基体5上下两侧中心对称设有“T”型耦合结构4，基体5的左右两侧分别设有信号输入端1和信号输出端2。 As shown in Figure 1, the symmetrical "T"-shaped bandpass filter based on the microstrip line structure includes a signal input terminal 1, a signal output terminal 2, a uniform transmission line 3, a symmetrical "T"-shaped coupling structure 4, and a substrate 5. 5 is surrounded by a uniform transmission line 3 to form a closed loop, and the upper and lower sides of the base 5 are symmetrically provided with a "T"-shaped coupling structure 4, and the left and right sides of the base 5 are respectively provided with a signal input terminal 1 and a signal output terminal 2. the
所述的均匀传输线3的微带线闭合回路的长度为99mm～101mm。所述的均匀传输线3的微带线闭合回路的宽度为80mm～81mm。所述的均匀传输线3的微带线的宽度为1mm～2mm。所述的对称“T”型耦合结构4的微带线的宽度为1mm～2mm。所述的对称“T”型耦合结构4的对称间距为10mm～12mm。所述的对称“T”型耦合结构4的“T”型总高度为44mm～45mm。所述的对称“T”型耦合结构4的等效阻值为50Ω。所述基体5材料为TaconicTLT-6，其介电常数是2.65，基体厚度是3mm。 The length of the microstrip closed loop of the uniform transmission line 3 is 99mm-101mm. The width of the microstrip closed loop of the uniform transmission line 3 is 80mm-81mm. The width of the microstrip line of the uniform transmission line 3 is 1mm-2mm. The width of the microstrip line of the symmetrical "T" type coupling structure 4 is 1mm-2mm. The symmetrical spacing of the symmetrical "T"-shaped coupling structures 4 is 10 mm to 12 mm. The total height of the "T" shape of the symmetrical "T"-shaped coupling structure 4 is 44mm-45mm. The equivalent resistance of the symmetrical "T"-shaped coupling structure 4 is 50Ω. The material of the base body 5 is TaconicTLT-6, its dielectric constant is 2.65, and the thickness of the base body is 3 mm. the
实施例 Example
选择介电常数为2.65的Taconic TLT-6(泰康利材料)制作基体，厚度为3.0mm。均匀传输线3的微带线闭合回路的长度为100mm，均匀传输线的微带线闭合回路的宽度为80mm，均匀传输线的微带线的宽度为1mm。对称“T”型耦合结构的微带线的宽度为1mm。对称“T”型耦合结构的对称间距为10mm，对称“T”型耦合结构的“T”型总高度为44mm，对称“T”型耦合结构4的等效阻值为50Ω，微带线结构的对称“T”型带通滤波器的整体尺寸为100×80mm2，基于微带线结构的对称“T”型带通滤波器性能曲线如图2所示，基于微带线结构的滤波器为对称“T”型带通滤波器，在频率为2.038GHz时，插入损耗为-0.015dB，带宽为0.147GHz；在频率为2.965时，插入损耗为-0.01dB，带宽为0.261GHz。 Choose Taconic TLT-6 (Taconic material) with a dielectric constant of 2.65 to make the substrate, with a thickness of 3.0mm. The length of the microstrip closed loop of the uniform transmission line 3 is 100 mm, the width of the microstrip closed loop of the uniform transmission line is 80 mm, and the width of the microstrip line of the uniform transmission line is 1 mm. The width of the microstrip line of the symmetrical "T" type coupling structure is 1mm. The symmetrical spacing of the symmetrical "T" coupling structure is 10mm, the total height of the "T" of the symmetrical "T" coupling structure is 44mm, the equivalent resistance of the symmetrical "T" coupling structure 4 is 50Ω, and the microstrip line structure The overall size of the symmetrical "T" type bandpass filter is 100×80mm 2 , and the performance curve of the symmetrical "T" type bandpass filter based on the microstrip line structure is shown in Figure 2. The filter based on the microstrip line structure It is a symmetrical "T" type bandpass filter. When the frequency is 2.038GHz, the insertion loss is -0.015dB and the bandwidth is 0.147GHz; when the frequency is 2.965, the insertion loss is -0.01dB and the bandwidth is 0.261GHz.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120111144U CN202134640U (en) | 2011-04-15 | 2011-04-15 | A Symmetrical "T" Type Bandpass Filter Based on Microstrip Line Structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120111144U CN202134640U (en) | 2011-04-15 | 2011-04-15 | A Symmetrical "T" Type Bandpass Filter Based on Microstrip Line Structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202134640U true CN202134640U (en) | 2012-02-01 |
Family
ID=45523402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120111144U Expired - Fee Related CN202134640U (en) | 2011-04-15 | 2011-04-15 | A Symmetrical "T" Type Bandpass Filter Based on Microstrip Line Structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202134640U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337679A (en) * | 2013-05-30 | 2013-10-02 | 华东交通大学 | Three-passband high-temperature superconductor (HTS) filter based on T-shaped branch loading stepped impedance resonator |
| KR101583015B1 (en) * | 2014-10-10 | 2016-01-06 | 광운대학교 산학협력단 | Dual mode bandpass filter with isolated coupling paths |
| KR101607497B1 (en) | 2014-10-15 | 2016-04-01 | 광운대학교 산학협력단 | Microstrip Bandpass Filters Using Window Hairpin Resonator and T-Feeder Coupling LinesDual mode bandpass filter with isolated coupling paths |
-
2011
- 2011-04-15 CN CN201120111144U patent/CN202134640U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337679A (en) * | 2013-05-30 | 2013-10-02 | 华东交通大学 | Three-passband high-temperature superconductor (HTS) filter based on T-shaped branch loading stepped impedance resonator |
| CN103337679B (en) * | 2013-05-30 | 2015-10-28 | 华东交通大学 | A kind of three passband high temperature superconduction wave filters based on T-shaped minor matters loading stepped-impedance resonator |
| KR101583015B1 (en) * | 2014-10-10 | 2016-01-06 | 광운대학교 산학협력단 | Dual mode bandpass filter with isolated coupling paths |
| KR101607497B1 (en) | 2014-10-15 | 2016-04-01 | 광운대학교 산학협력단 | Microstrip Bandpass Filters Using Window Hairpin Resonator and T-Feeder Coupling LinesDual mode bandpass filter with isolated coupling paths |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101515661B (en) | Microstrip Dual-mode Filter with Nested Ring Structure and Parallel Feedline | |
| CN204130675U (en) | A New Double Layer Common Port Cavity Combiner | |
| CN101752635A (en) | Dual-band band-pass filter with controllable band width | |
| CN103762404B (en) | Double-frequency-band filter | |
| CN202134640U (en) | A Symmetrical "T" Type Bandpass Filter Based on Microstrip Line Structure | |
| CN202094255U (en) | Triple-band band-pass filter based on hairpin resonator | |
| CN201576729U (en) | Interdigitated microwave dual-band bandpass filter based on microstrip line structure | |
| CN106058393A (en) | Miniaturized cavity duplexer applied to digital repeaters | |
| CN103187600A (en) | Dual-mode three-way wide-band filter based on multi-branch loaded square resonance ring | |
| CN108054476A (en) | A kind of four band-pass filter of frequency band of microwave | |
| CN101465458B (en) | Miniaturisation high-performance microstrip bimodule band-pass filter | |
| CN103457008B (en) | A kind of filter with back of the body chamber resonator | |
| CN109273806A (en) | Miniaturized low-pass filter based on hexagonal T-type resonator | |
| CN205828610U (en) | A kind of miniaturization cavity duplexer being applied to digital high-frequency amplification station | |
| CN102637931B (en) | Microwave three-passband bandpass filter | |
| CN202721248U (en) | Microstrip Bandpass Filter Based on Loaded Asymmetric Branch Line Resonator Unit | |
| CN103326090B (en) | A three-pass high-temperature superconducting filter | |
| CN202534756U (en) | Compact type dual mode open circuit loop band pass filter | |
| CN208444926U (en) | A kind of micro- strip wide-stopband low-pass filter of capacitance resonance machine | |
| CN204333184U (en) | Based on the compact bimodulus microstrip filter of E type resonator and T-shaped feeder line | |
| CN204333182U (en) | Based on the double-mode double-band narrow band filter of E type resonator and T-shaped feeder line | |
| CN204333185U (en) | Based on the compact double-mode double-band microstrip filter of E type resonator | |
| CN204333181U (en) | Double-mode double-band filter | |
| CN204333183U (en) | Based on the compact bimodulus Wide stop bands filter of E type resonator and T-shaped feeder line | |
| CN203721858U (en) | Ultra-wideband trap wave filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20120415 |