CN107611553A - Lump type directional coupler is miniaturized in a kind of LTCC - Google Patents
Lump type directional coupler is miniaturized in a kind of LTCC Download PDFInfo
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- CN107611553A CN107611553A CN201710718816.1A CN201710718816A CN107611553A CN 107611553 A CN107611553 A CN 107611553A CN 201710718816 A CN201710718816 A CN 201710718816A CN 107611553 A CN107611553 A CN 107611553A
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- lead wire
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Abstract
The invention discloses a kind of LTCC to be miniaturized lump type directional coupler, and coupler is interconnected to constitute by lumped-parameter element capacitor and inductor.Using three-dimensional integration, realized with multilayer LTCC technology, substantially reduce the volume of device.The present invention has wide working band, small volume, straight-through and coupling port phase orthogonality good, straight-through and coupling port amplitude error is small, temperature stability is good, perfect heat-dissipating, reliability height, high yield rate, batch production electrical performance indexes uniformity are good, the advantages that cost is low and easy to install, has suitable for the communication of corresponding microwave frequency band, digital radar, radio communication handheld terminal etc. to electrical property, material uniformity, hot mechanicalness, temperature stability, manufacturability and anti-interference the occasion and corresponding system of rigors.
Description
Technical field
The invention belongs to microwave technical field, is a kind of LTCC lump types directional coupler specifically.
Background technology
Directional coupler is a kind of directive power coupling (distribution) element of tool.It is a kind of four port elements, is led to
Often formed by two sections of transmission line combinations for being referred to as direct-through line and coupling line.Pass through certain coupling machine between direct-through line and coupling line
System is coupled to a part (or whole) for straight-through linear heat generation rate in coupling line, and it is a certain to require that power is only transmitted in lotus root zygonema
Output port, then inactivity exports for another port.The technical indicator of coupler have working frequency, input and output voltage standing-wave ratio,
Insertion loss, isolation, amplitude balance, phase equilibrium characteristic etc., in addition, the temperature stability of coupler, volume, weight etc.
It is the important references content for weighing its performance.
In recent years, the miniaturization of mobile communication, satellite communication and Defensive Avionics System is rapid, high-performance, low cost
Have become one of developing direction of microwave current technical field with miniaturization, the performance of microwave device, size, reliability and into
Originally it is required to further be lifted.LTCC Technology（LTCC）, be it is a kind of by stacking burn altogether it is some be printed on it is specific
The Electronic Encapsulating Technology of metal figure layer ceramic chips.The characteristics of LTCC is high-performance, high stable, highly reliable and height
It is integrated, while reliability is ensured, the size of product is greatly reduced, has developed into the main flow skill of passive integration
Art.
The development of Modern Electronic Countermeasure system, measuring instrument system, people make to portability and integrated continuous pursuit
For widely used directional coupler in microwave system, people propose higher requirement to its volume and performance.
The content of the invention
It is an object of the invention to provide one kind to realize small volume, in light weight, simple in construction, excellent electrical property, reliability
Height, high yield rate, batch uniformity are good, temperature performance is stable, low cost LTCC miniaturizations lump type directional coupler.
Realizing the technical scheme of the object of the invention is：Lump type directional coupler, including surface patch is miniaturized in a kind of LTCC
The P1 of 50 ohmage port one of dress, the surface-pasted P2 of 50 ohmage port two, surface-pasted 50 ohmage port
Three P3, the surface-pasted P4 of 50 ohmage port four, the L121 of connecting lead wire one, the L122 of connecting lead wire two, connecting lead wire three
L141, the L144 of connecting lead wire four, the L232 of connecting lead wire five, the L233 of connecting lead wire six, the L343 of connecting lead wire seven, connecting lead wire eight
L344, the L12 of spiral inductance one, the L14 of spiral inductance two, the L23 of spiral inductance three, the L34 of spiral inductance four, the C1 of electric capacity one, electric capacity two
C2, the C3 of electric capacity three, the C4 of electric capacity four, the GND1 of grounding ports one, the GND2 of grounding ports two, the SD1 of earth plate one, the SD2 of earth plate two.
The L12 of spiral inductance one has three layers, is followed successively by first, second and third layer from the top down, and the L14 of spiral inductance two has three layers, from
On be followed successively by first, second and third layer downwards, the L23 of spiral inductance three has three layers, is followed successively by first, second and third layer from the top down, spiral
The L34 of inductance four has three layers, is followed successively by first, second and third layer from the top down, the L12 of spiral inductance one third layer and connecting lead wire one
L121 one end is connected, and the L121 other ends of connecting lead wire one are connected with the surface-pasted P1 of 50 ohmage port one, spiral inductance
One L12 first layer is connected with the L122 one end of connecting lead wire two, the L122 other ends of connecting lead wire two with surface-pasted 50 ohm
The P2 connections of impedance port two, the L14 of spiral inductance two third layer are connected with the L141 one end of connecting lead wire three, the L141 of connecting lead wire three
The other end is connected with the surface-pasted P1 of 50 ohmage port one, the L14 of spiral inductance two first layer and connecting lead wire four
L144 one end is connected, and the L144 other ends of connecting lead wire four are connected with the surface-pasted P4 of 50 ohmage port four, spiral inductance
Three L23 third layer is connected with the L232 one end of connecting lead wire five, the L232 other ends of connecting lead wire five with surface-pasted 50 ohm
The P2 connections of impedance port two, the L23 of spiral inductance three first layer are connected with the L233 one end of connecting lead wire six, the L233 of connecting lead wire six
The other end is connected with the surface-pasted P3 of 50 ohmage port three, the L34 of spiral inductance four third layer and connecting lead wire eight
L344 one end is connected, and the L344 other ends of connecting lead wire eight are connected with the surface-pasted P4 of 50 ohmage port four, spiral inductance
Four L34 first layer is connected with the L343 one end of connecting lead wire seven, the L343 other ends of connecting lead wire seven with surface-pasted 50 ohm
The P3 connections of impedance port three.The C1 bottom crowns of electric capacity one are connected with the surface-pasted P1 of 50 ohmage port one, and top crown is to connect
The SD1 of floor one, the C2 bottom crowns of electric capacity two are connected with the surface-pasted P2 of 50 ohmage port two, and top crown is earth plate one
SD1, the C3 top crowns of electric capacity three are connected with the surface-pasted P3 of 50 ohmage port three, and bottom crown is the SD1 of earth plate one, electric capacity
Four C4 top crowns are connected with the surface-pasted P4 of 50 ohmage port four, and bottom crown is the SD1 of earth plate one.Grounding ports one
GND1 and the GND2 of grounding ports two are connected with the SD1 of earth plate one and the SD2 of earth plate two.
It is the surface-pasted P1 of 50 ohmage port one, the surface-pasted P2 of 50 ohmage port two, surface-pasted
The P3 of 50 ohmage port three, the surface-pasted P4 of 50 ohmage port four, the L121 of connecting lead wire one, connecting lead wire two
L122, the L141 of connecting lead wire three, the L144 of connecting lead wire four, the L232 of connecting lead wire five, the L233 of connecting lead wire six, connecting lead wire seven
L343, the L344 of connecting lead wire eight, the L12 of spiral inductance one, the L14 of spiral inductance two, the L23 of spiral inductance three, the L34 of spiral inductance four,
The C1 of electric capacity one, the C2 of electric capacity two, the C3 of electric capacity three, the C4 of electric capacity four, the GND1 of grounding ports one, the GND2 of grounding ports two, earth plate one
SD1, the SD2 of earth plate two are realized using multilayer LTCC technique.All inductance use rectangle stereoscopic multi-layer spiral
Formula structure, electric capacity use the structure of metal-dielectric-metal form.
Compared with prior art, the present invention uses low-loss low-temperature co-burning ceramic material and three-dimensional integration, its advantage
Significantly, specifically include：（1）Small volume, in light weight, cost is low；（2）Circuit realiration is simple in construction, can be achieved to produce in enormous quantities；
（3）Reliability is high；（4）It is easy to install and use, used separately as part, can install and weld by full-automatic chip mounter.
Brief description of the drawings
Fig. 1（a）It is a kind of structure chart of present invention LTCC miniaturization lump type directional coupler, Fig. 1（b）It is the present invention one
The front view of kind LTCC miniaturization lump type directional couplers, Fig. 1（c）It is a kind of LTCC miniaturizations lump type orientation coupling of the present invention
The side view of clutch.
Fig. 2 is a kind of LTCC miniaturizations lump type directional coupler main performance test curve figure of the present invention.
Fig. 3 is that a kind of LTCC miniaturization lump types directional coupler of the present invention is led directly to and coupling port phase dygoram.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
With reference to Fig. 1（a）、（b）、（c）, a kind of LTCC miniaturizations lump type directional coupler, including surface-pasted 50 Europe
The P1 of nurse impedance port one, the surface-pasted P2 of 50 ohmage port two, the surface-pasted P3 of 50 ohmage port three, surface
The P4 of 50 ohmage port four of attachment, the L121 of connecting lead wire one, the L122 of connecting lead wire two, the L141 of connecting lead wire three, connection are drawn
The L144 of line four, the L232 of connecting lead wire five, the L233 of connecting lead wire six, the L343 of connecting lead wire seven, the L344 of connecting lead wire eight, spiral inductance
One L12, the L14 of spiral inductance two, the L23 of spiral inductance three, the L34 of spiral inductance four, the C1 of electric capacity one, the C2 of electric capacity two, the C3 of electric capacity three, electricity
Hold four C4, the GND1 of grounding ports one, the GND2 of grounding ports two, the SD1 of earth plate one, the SD2 of earth plate two.
With reference to Fig. 1（a）、（b）、（c）, the L12 of spiral inductance one has three layers, is followed successively by first, second and third layer from the top down, spiral shell
The rotation L14 of inductance two has three layers, is followed successively by first, second and third layer from the top down, the L23 of spiral inductance three has three layers, from the top down successively
For first, second and third layer, the L34 of spiral inductance four has three layers, is followed successively by first, second and third layer from the top down, the L12's of spiral inductance one
Third layer is connected with the L121 one end of connecting lead wire one, the L121 other ends of connecting lead wire one and surface-pasted 50 ohmage port
One P1 connections, the L12 of spiral inductance one first layer are connected with the L122 one end of connecting lead wire two, the L122 other ends of connecting lead wire two with
The surface-pasted P2 connections of 50 ohmage port two, the L14 of spiral inductance two third layer and the L141 one end of connecting lead wire three connect
Connecing, the L141 other ends of connecting lead wire three are connected with the surface-pasted P1 of 50 ohmage port one, and the first of the L14 of spiral inductance two
Layer is connected with the L144 one end of connecting lead wire four, the L144 other ends of connecting lead wire four and the surface-pasted P4 of 50 ohmage port four
Connection, the L23 of spiral inductance three third layer are connected with the L232 one end of connecting lead wire five, the L232 other ends of connecting lead wire five and surface
The P2 connections of 50 ohmage port two of attachment, the L23 of spiral inductance three first layer are connected with the L233 one end of connecting lead wire six, even
The L233 other ends of lead six are connect to be connected with the surface-pasted P3 of 50 ohmage port three, the L34 of spiral inductance four third layer with
The L344 one end of connecting lead wire eight connects, and the L344 other ends of connecting lead wire eight connect with the surface-pasted P4 of 50 ohmage port four
Connect, the L34 of spiral inductance four first layer is connected with the L343 one end of connecting lead wire seven, and the L343 other ends of connecting lead wire seven paste with surface
The P3 connections of 50 ohmage port three of dress.The C1 bottom crowns of electric capacity one are connected with the surface-pasted P1 of 50 ohmage port one,
Top crown is the SD1 of earth plate one, and the C2 bottom crowns of electric capacity two are connected with the surface-pasted P2 of 50 ohmage port two, and top crown is
The SD1 of earth plate one, the C3 top crowns of electric capacity three are connected with the surface-pasted P3 of 50 ohmage port three, and bottom crown is earth plate one
SD1, the C4 top crowns of electric capacity four are connected with the surface-pasted P4 of 50 ohmage port four, and bottom crown is the SD1 of earth plate one.Ground connection
The GND1 of port one and the GND2 of grounding ports two are connected with the SD1 of earth plate one and the SD2 of earth plate two.
With reference to Fig. 1（a）、（b）、（c）, it is described including the surface-pasted P1 of 50 ohmage port one, surface-pasted 50
The P2 of ohmage port two, the surface-pasted P3 of 50 ohmage port three, the surface-pasted P4 of 50 ohmage port four, company
Connect the L121 of lead one, the L122 of connecting lead wire two, the L141 of connecting lead wire three, the L144 of connecting lead wire four, the L232 of connecting lead wire five, connection
The L233 of lead six, the L343 of connecting lead wire seven, the L344 of connecting lead wire eight, the L12 of spiral inductance one, the L14 of spiral inductance two, spiral inductance
Three L23, the L34 of spiral inductance four, the C1 of electric capacity one, the C2 of electric capacity two, the C3 of electric capacity three, the C4 of electric capacity four, the GND1 of grounding ports one, earth terminal
Two GND2 of mouth, the SD1 of earth plate one, the SD2 of earth plate two are realized using multilayer LTCC technique.All inductance use
Rectangle stereoscopic multi-layer sped structure, electric capacity use the structure of metal-dielectric-metal form.
Lump type directional coupler is miniaturized in a kind of LTCC, due to being realized using multilayer LTCC technique, its
Low-temperature co-burning ceramic material and metallic pattern sinter at a temperature of about 900 DEG C to be formed, thus with extreme high reliability and
Temperature stability.Be grounded using three-dimensional integration and multilayer folding structure and outer surface metallic shield due to structure and
Encapsulation so that cost is preferably minimized.
A kind of LTCC miniaturizations lump type directional coupler size of the present invention is only 1.8mm × 3.4mm × 1.2mm, its property
It is able to can find out from Fig. 2, Fig. 3, this coupler centre frequency 0.9GHZ, bandwidth 0.75GHz ~ 1.05GHz, relative bandwidth 33.3%,
Input port return loss is better than 10dB, and the isolation between port is all higher than 10dB, it is straight-through differed with coupled end phase 90 ° (±
3°).Size is very small compared with the frequency range like product, is the miniaturization of respective wireless electronic system and effectively mitigates system weight
Amount and raising system reliability play a significant role.
Claims (3)
1. lump type directional coupler is miniaturized in a kind of LTCC, it is characterised in that：Including surface-pasted 50 ohmage port
One（P1）, surface-pasted 50 ohmage port two（P2）, surface-pasted 50 ohmage port three（P3）, surface mount
50 ohmage ports four（P4）, connecting lead wire one（L121）, connecting lead wire two（L122）, connecting lead wire three（L141）, even
Connect lead four（L144）, connecting lead wire five（L232）, connecting lead wire six（L233）, connecting lead wire seven（L343）, connecting lead wire eight
（L344）, spiral inductance one（L12）, spiral inductance two（L14）, spiral inductance three（L23）, spiral inductance four（L34）, electric capacity one
（C1）, electric capacity two（C2）, electric capacity three（C3）, electric capacity four（C4）, grounding ports one（GND1）, grounding ports two（GND2）, ground connection
Plate one（SD1）With earth plate two（SD2）；
Spiral inductance one（L12）There are three layers, be followed successively by first, second and third layer from the top down, spiral inductance two（L14）There are three layers, from
On be followed successively by first, second and third layer downwards, spiral inductance three（L23）There are three layers, be followed successively by first, second and third layer from the top down, spiral shell
Revolve inductance four（L34）There are three layers, be followed successively by first, second and third layer from the top down, spiral inductance one（L12）Third layer and connection
Lead one（L121）One end connects, connecting lead wire one（L121）The other end and surface-pasted 50 ohmage port one（P1）Even
Connect, spiral inductance one（L12）First layer and connecting lead wire two（L122）One end connects, connecting lead wire two（L122）The other end with
Surface-pasted 50 ohmage port two（P2）Connection, spiral inductance two（L14）Third layer and connecting lead wire three（L141）
One end connects, connecting lead wire three（L141）The other end and surface-pasted 50 ohmage port one（P1）Connection, spiral inductance
Two（L14）First layer and connecting lead wire four（L144）One end connects, connecting lead wire four（L144）The other end with it is surface-pasted
50 ohmage ports four（P4）Connection, spiral inductance three（L23）Third layer and connecting lead wire five（L232）One end connects, even
Connect lead five（L232）The other end and surface-pasted 50 ohmage port two（P2）Connection, spiral inductance three（L23）
One layer and connecting lead wire six（L233）One end connects, connecting lead wire six（L233）The other end and surface-pasted 50 ohmage end
Mouth three（P3）Connection, spiral inductance four（L34）Third layer and connecting lead wire eight（L344）One end connects, connecting lead wire eight
（L344）The other end and surface-pasted 50 ohmage port four（P4）Connection, spiral inductance four（L34）First layer and company
Connect lead seven（L343）One end connects, connecting lead wire seven（L343）The other end and surface-pasted 50 ohmage port three（P3）
Connection；Electric capacity one（C1）Bottom crown and surface-pasted 50 ohmage port one（P1）Connection, top crown is earth plate one
（SD1）, electric capacity two（C2）Bottom crown and surface-pasted 50 ohmage port two（P2）Connection, top crown is earth plate one
（SD1）, electric capacity three（C3）Top crown and surface-pasted 50 ohmage port three（P3）Connection, bottom crown is earth plate one
（SD1）, electric capacity four（C4）Top crown and surface-pasted 50 ohmage port four（P4）Connection, bottom crown is earth plate one
（SD1）；Grounding ports one（GND1）With grounding ports two（GND2）With earth plate one（SD1）With earth plate two（SD2）Connection.
2. lump type directional coupler is miniaturized in LTCC according to claim 1, it is characterised in that：Surface-pasted 50 Europe
Nurse impedance port one（P1）, surface-pasted 50 ohmage port two（P2）, surface-pasted 50 ohmage port three
（P3）, surface-pasted 50 ohmage port four（P4）, connecting lead wire one（L121）, connecting lead wire two（L122）, connection draw
Line three（L141）, connecting lead wire four（L144）, connecting lead wire five（L232）, connecting lead wire six（L233）, connecting lead wire seven
（L343）, connecting lead wire eight（L344）, spiral inductance one（L12）, spiral inductance two（L14）, spiral inductance three（L23）, spiral
Inductance four（L34）, electric capacity one（C1）, electric capacity two（C2）, electric capacity three（C3）, electric capacity four（C4）, grounding ports one（GND1）, ground connection
Port two（GND2）, earth plate one（SD1）, earth plate two（SD2）Realized using multilayer LTCC technique.
3. lump type directional coupler is miniaturized in LTCC according to claim 1, it is characterised in that：Described inductance is adopted
With square 3-dimensional multi-layered sped structure, electric capacity uses the structure of metal-dielectric-metal form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718816.1A CN107611553A (en) | 2017-08-21 | 2017-08-21 | Lump type directional coupler is miniaturized in a kind of LTCC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718816.1A CN107611553A (en) | 2017-08-21 | 2017-08-21 | Lump type directional coupler is miniaturized in a kind of LTCC |
Publications (1)
| Publication Number | Publication Date |
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| CN107611553A true CN107611553A (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710718816.1A Pending CN107611553A (en) | 2017-08-21 | 2017-08-21 | Lump type directional coupler is miniaturized in a kind of LTCC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755712A (en) * | 2019-03-01 | 2019-05-14 | 南京邮电大学 | A kind of Chebyshev's second order branch line directional coupler based on LTCC structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2634859A1 (en) * | 2012-03-01 | 2013-09-04 | Nxp B.V. | Lange coupler and fabrication method |
| CN104332687A (en) * | 2014-09-29 | 2015-02-04 | 中国电子科技集团公司第五十五研究所 | Improved 2.4GHz LTCC power divider |
| CN104934674A (en) * | 2015-07-14 | 2015-09-23 | 南京理工大学 | L-band minisize double microwave orthogonal power divider |
| CN105226368A (en) * | 2015-11-12 | 2016-01-06 | 无锡中普微电子有限公司 | Braodband directional coupler |
| US20160233569A1 (en) * | 2015-02-05 | 2016-08-11 | Radio Frequency Systems Pty Ltd. | Directional coupler |
-
2017
- 2017-08-21 CN CN201710718816.1A patent/CN107611553A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2634859A1 (en) * | 2012-03-01 | 2013-09-04 | Nxp B.V. | Lange coupler and fabrication method |
| CN104332687A (en) * | 2014-09-29 | 2015-02-04 | 中国电子科技集团公司第五十五研究所 | Improved 2.4GHz LTCC power divider |
| US20160233569A1 (en) * | 2015-02-05 | 2016-08-11 | Radio Frequency Systems Pty Ltd. | Directional coupler |
| CN104934674A (en) * | 2015-07-14 | 2015-09-23 | 南京理工大学 | L-band minisize double microwave orthogonal power divider |
| CN105226368A (en) * | 2015-11-12 | 2016-01-06 | 无锡中普微电子有限公司 | Braodband directional coupler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755712A (en) * | 2019-03-01 | 2019-05-14 | 南京邮电大学 | A kind of Chebyshev's second order branch line directional coupler based on LTCC structure |
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Application publication date: 20180119 |