CN103795357B - Integrated four-circuit power combiner used for WiFi power amplifier - Google Patents
Integrated four-circuit power combiner used for WiFi power amplifier Download PDFInfo
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- CN103795357B CN103795357B CN201410053943.0A CN201410053943A CN103795357B CN 103795357 B CN103795357 B CN 103795357B CN 201410053943 A CN201410053943 A CN 201410053943A CN 103795357 B CN103795357 B CN 103795357B
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- circuit
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- harmonic suppression
- power amplifier
- power combiner
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Abstract
The invention discloses an integrated four-circuit power combiner used for a WiFi power amplifier. According to the power combiner, a first harmonic suppression circuit, a second harmonic suppression circuit, a first blocking circuit and a first parallel resonant circuit form an upper network, in the upper network, the first harmonic suppression circuit and the second harmonic suppression circuit are connected to the first blocking circuit in parallel, and the first blocking circuit is connected to the first parallel resonant circuit in series. A third harmonic suppression circuit, a fourth harmonic suppression circuit, a second blocking circuit and a second parallel resonant circuit form a lower network, in the lower network, the third harmonic suppression circuit and the fourth harmonic suppression circuit are connected to the second blocking circuit in parallel, and the second blocking circuit is connected to the second parallel resonant circuit in series. The T-type matching network is connected between the upper network and the lower network. A silica-based integrated passive component integrated technology is adopted, so that cost is low; integrated components are small in size and high in uniformity and reliability.
Description
Technical field
The present invention relates to the power amplifier being applied in the portable sets such as WiFi, GSM, TD-SCDMA, WCDMA, LTE
Power synthesis device, more particularly, to a kind of integrated form No. four power combiner for WiFi power amplifier.
Background technology
The terminals such as PC, handheld device (mobile phone, panel computer etc.) can wirelessly be interconnected by WiFi, is to work as
The present is using a kind of wireless network transmission technology the widest.WiFi transfer rate is fast, meets personal and social informatization demand, non-
Often it is suitable for the demand of mobile office user.WiFi module is widely used in family, office space and public consumption place, ecology potential
Head is violent, and market is huge, and substantially, prospect is very optimistic for economic benefit.
Power amplifier is the Important Circuit ingredient of WiFi module, is also the design difficulty of whole transmitter, it is defeated
Going out power has significant impact to the coverage of WiFi signal.Power combiner is to improve power amplifier output power to have the most
Effect easily means.In recent years, with the fast development of integrated form passive device, silicon substrate integrated form passive device gradually enters into business
With.Little for the integrated power synthesizer integrated level height of power amplifier, size, multi-chip can be adopted to seal with amplifier chip
Dress form realizes miniaturization, and concordance, reliability are high.
Content of the invention
(1) technical problem to be solved
In view of this, present invention is primarily targeted at providing a kind of integrated form four road work(for WiFi power amplifier
Rate synthesizer, to realize No. four power combiners of output matching, power combing, filter with low insertion loss, satisfaction is applied to WiFi power and puts
The needs of big device.
(2) technical scheme
For reaching above-mentioned purpose, the invention provides a kind of integrated form four road power combing for WiFi power amplifier
Device, this power combiner adopts silicon substrate integrated form passive device technique, including four harmonic suppression circuits, two block isolating circuits,
One T-shaped matching network and two antiresonant circuits, wherein, first harmonic suppression circuit, second harmonic suppression circuit, first
Block isolating circuit string and the first antiresonant circuit constitute upper network, and in network on this, the first and second harmonic suppression circuits are simultaneously
Connection is connected to the first block isolating circuit, and this first block isolating circuit is connected in series in the first antiresonant circuit；Third harmonic suppression electricity
Road, the 4th harmonic suppression circuit, the second block isolating circuit string and the second antiresonant circuit constitute lower network, in this lower network,
Third and fourth harmonic suppression circuit is connected in parallel in the second block isolating circuit, and it is in parallel that this second block isolating circuit is connected in series in second
Resonance circuit；This T-shaped matching network is connected between network and lower network, and one end of this T-shaped matching network is connected to first
Between block isolating circuit and the first antiresonant circuit, the other end of this T-shaped matching network is connected to the second block isolating circuit and second
Between antiresonant circuit.
In such scheme, this No. four power combiner is symmetrical structure, four power amplifiers in WiFi power amplifier
Corresponding to four inputs of this No. four power combiner, the two adopts spun gold binding line to connect for the output of unit.
In such scheme, on-chip capacitance Cs in harmonic suppression circuit of the input signal of this No. four power combiner and
Spun gold binding line Ld3Realize limitation of high harmonics, be then passed through capacitance Cc and direct current signal is blocked, then through T-shaped pair net
Network matches lower network simultaneously, then mates further through antiresonant circuit and suppress special frequency channel signal, finally go up network and
Lower network is all by binding line Ld1Connect and same outer matching unit.
In such scheme, the outer matching unit of this piece adopts integrated on piece.
In such scheme, on-chip capacitance Cs in this harmonic suppression circuit and spun gold binding line Ld3Complete harmonics restraint work(
Can, wherein on-chip capacitance Cs adopts MIM capacitor on piece to realize, spun gold binding line Ld3Realized with binding line or ground connection dorsal pore.
In such scheme, this capacitance Cc completes, every straight function, to realize using MIM capacitor on piece.
In such scheme, this T-shaped matching network includes two LTWith a Ld4, match lower network, wherein L simultaneouslyTWith
On piece, metal routing is realized, Ld4Realized with on-chip inductor and ground connection dorsal pore or binding line.
In such scheme, this antiresonant circuit includes the L being connected in parallelpAnd Cp, complete suppression and the impedance of special frequency channel
Matching feature.
In such scheme, the outfan Z of four Power Amplifier Unit in this WiFi power amplifierLAll by binding line
Ld2It is connected to four harmonic suppression circuits of this No. four power combiner.
(3) beneficial effect
From such scheme as can be seen that the invention has the advantages that：
1st, this integrated form No. four power combiner for WiFi power amplifier that the present invention provides, using lump L-
C-structure, it is possible to achieve every straight, coupling, harmonics restraint, special frequency channel signal suppression and power combing function, integrated level is high, significantly
Reduce module size, reduce machine volume, particularly important for portable set.Meanwhile, using silicon substrate integrated form passive device
, it is achieved that low insertion loss and higher current carrying capacity, the harshness meeting power amplifier synthesis will for technique
Ask.
2nd, this integrated form No. four power combiner for WiFi power amplifier that the present invention provides, using integrated form
Passive device processing technique is realized, using lump type electric capacity, inductance on piece complete with spun gold binding line every straight, mate and power
Complex functionality.Matching element outside for piece can be whole using realizing on piece reducing further as a part of of power combiner
Body size.The present invention adopts silicon substrate integrated form passive device integration technique, with low cost；Integrated-device dimension is little, concordance,
Reliability is high.
Brief description
Fig. 1 is the structural representation of integrated form No. four power combiner provided by the present invention for WiFi power amplifier
Figure；
Fig. 2 is the schematic diagram of integrated form No. four power combiner provided by the present invention for WiFi power amplifier.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
As shown in figure 1, Fig. 1 is the four road power combiner configurations signals provided by the present invention for WiFi power amplifier
Figure.This No. four power combiner adopts silicon substrate integrated form passive device technique, including four harmonic suppression circuits, two every directly electricity
Road, a T-shaped matching network and two antiresonant circuits, wherein, first harmonic suppression circuit, second harmonic suppression circuit,
First block isolating circuit string and the first antiresonant circuit constitute upper network, in network on this, the first and second harmonics restraint electricity
Road is connected in parallel in the first block isolating circuit, and this first block isolating circuit is connected in series in the first antiresonant circuit；Third harmonic presses down
Circuit processed, the 4th harmonic suppression circuit, the second block isolating circuit string and the second antiresonant circuit constitute lower network, in this lower network
In, the third and fourth harmonic suppression circuit is connected in parallel in the second block isolating circuit, and this second block isolating circuit is connected in series in second
Antiresonant circuit；This T-shaped matching network is connected between network and lower network, and one end of this T-shaped matching network is connected to
Between first block isolating circuit and the first antiresonant circuit, the other end of this T-shaped matching network be connected to the second block isolating circuit with
Between second antiresonant circuit.
This No. four power combiner is symmetrical structure, and in WiFi power amplifier, the output of four Power Amplifier Unit is right
Four that answer Yu Gai No. tetra- power combiner input, and the two adopts spun gold binding line to connect, that is, four in WiFi power amplifier
The outfan Z of Power Amplifier UnitLAll by binding line Ld2It is connected to four harmonics restraint electricity of this No. four power combiner
Road.Harmonic suppression circuit adopts MIM capacitor and binding line (or ground connection dorsal pore) on piece to realize, and block isolating circuit adopts MIM electricity on piece
Hold and realize, T-shaped matching network is realized, parallel resonance electricity with metal routing on piece and binding line (or on-chip inductor and ground connection dorsal pore)
Road is realized with inductance with on-chip capacitance.
Four inputs of Cong Gai No. tetra- power combiner start, and its specific implementation is as follows：This No. four power combiner
On-chip capacitance Cs in harmonic suppression circuit for the input signal and spun gold binding line Ld3Realize limitation of high harmonics, Ran Houjing
Cross capacitance Cc to block direct current signal, then match lower network through T-shaped matching network simultaneously, then through antiresonant circuit
Mate further and suppression special frequency channel signal, finally go up network and lower network all by binding line Ld1Connect outer with same
Matching unit, the outer matching element of this piece can be using integrated on piece.
This No. four power combiner adopts lump L-C element on piece, mates unit in conjunction with outside spun gold binding line and a small amount of piece
Part forms.The schematic diagram of this No. four power combiner is as shown in Figure 2.On-chip capacitance Cs in harmonic suppression circuit and spun gold binding
Line Ld3Complete harmonic restraining function, wherein Cs adopts MIM capacitor on piece to realize, Ld3Realized with binding line or ground connection dorsal pore, depending on tool
Depending on body technology.Capacitance Cc completes, every straight function, to realize using MIM capacitor on piece.T-shaped matching network includes two LTWith
One Ld4, match lower network, wherein L simultaneouslyTRealized with metal routing on piece, Ld4With on-chip inductor and ground connection dorsal pore or binding
Line is realized, depending on technique and concrete condition.Antiresonant circuit includes the L being connected in parallelpAnd Cp, complete the suppression of special frequency channel
System and impedance matching function.Ld2The binding line being connected with power amplifier for integrated power synthesizer.Upper and lower two networks with
Binding line Ld1Connect and be connected to the outer matching element of package pins and piece.Can realize using on piece for described outer matching network.
Particular embodiments described above, has carried out detailed further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, be should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement done etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (7)
1. a kind of integrated form No. four power combiner for WiFi power amplifier is it is characterised in that this power combiner is adopted
With silicon substrate integrated form passive device technique, including four harmonic suppression circuits, two block isolating circuits, a T-shaped matching network and
Two antiresonant circuits, wherein：
On first harmonic suppression circuit, second harmonic suppression circuit, the first block isolating circuit string and the first antiresonant circuit are constituted
Network, in network on this, the first and second harmonic suppression circuits are connected in parallel in the first block isolating circuit, this first block isolating circuit
It is connected in series in the first antiresonant circuit；Third harmonic suppression circuit, the 4th harmonic suppression circuit, the second block isolating circuit string and
Second antiresonant circuit constitutes lower network, and in this lower network, the third and fourth harmonic suppression circuit is connected in parallel in second
Block isolating circuit, this second block isolating circuit is connected in series in the second antiresonant circuit；This T-shaped matching network be connected to network with
Between lower network, one end of this T-shaped matching network is connected between the first block isolating circuit and the first antiresonant circuit, and this is T-shaped
The other end of matching network is connected between the second block isolating circuit and the second antiresonant circuit；
This No. four power combiner be symmetrical structure, in WiFi power amplifier the output of four Power Amplifier Unit corresponding to
Four inputs of this No. four power combiner, the two adopts spun gold binding line to connect；
On-chip capacitance Cs in harmonic suppression circuit for the input signal of this No. four power combiner and spun gold binding line Ld3Real
Existing limitation of high harmonics, is then passed through capacitance Cc and blocks direct current signal, then match down through T-shaped matching network simultaneously
Network, then mate further through antiresonant circuit and suppress special frequency channel signal, finally go up network and lower network all by tying up
Alignment Ld1Connect and same outer matching unit.
2. integrated form No. four power combiner for WiFi power amplifier according to claim 1 it is characterised in that
The outer matching unit of this piece adopts integrated on piece.
3. integrated form No. four power combiner for WiFi power amplifier according to claim 1 it is characterised in that
On-chip capacitance Cs in this harmonic suppression circuit and spun gold binding line Ld3Complete harmonic restraining function, wherein on-chip capacitance Cs adopts
On piece, MIM capacitor is realized, spun gold binding line Ld3Realized with binding line or ground connection dorsal pore.
4. integrated form No. four power combiner for WiFi power amplifier according to claim 1 it is characterised in that
This capacitance Cc completes, every straight function, to realize using MIM capacitor on piece.
5. integrated form No. four power combiner for WiFi power amplifier according to claim 1 it is characterised in that
This T-shaped matching network includes two LTWith a Ld4, match lower network, wherein L simultaneouslyTRealized with metal routing on piece, Ld4
Realized with on-chip inductor and ground connection dorsal pore or binding line.
6. integrated form No. four power combiner for WiFi power amplifier according to claim 1 it is characterised in that
This antiresonant circuit includes the L being connected in parallelpAnd Cp, complete suppression and the impedance matching function of special frequency channel.
7. integrated form No. four power combiner for WiFi power amplifier according to claim 1 it is characterised in that
The outfan Z of four Power Amplifier Unit in this WiFi power amplifierLAll by binding line Ld2It is connected to this four roads power
Four harmonic suppression circuits of synthesizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053943.0A CN103795357B (en) | 2014-02-18 | 2014-02-18 | Integrated four-circuit power combiner used for WiFi power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053943.0A CN103795357B (en) | 2014-02-18 | 2014-02-18 | Integrated four-circuit power combiner used for WiFi power amplifier |
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| Publication Number | Publication Date |
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| CN103795357A CN103795357A (en) | 2014-05-14 |
| CN103795357B true CN103795357B (en) | 2017-02-08 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106330245B (en) * | 2016-11-21 | 2019-06-21 | 深圳市丰禾原电子科技有限公司 | RF wireless reception of signals amplifier chip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562425A (en) * | 2009-05-26 | 2009-10-21 | 惠州市正源微电子有限公司 | High-low power combining circuit for radio-frequency power amplifier |
| CN101888213A (en) * | 2010-04-30 | 2010-11-17 | 苏州英诺迅科技有限公司 | Push-pull radio-frequency power amplifier with improved linearity and efficiency |
| CN101908881A (en) * | 2010-07-28 | 2010-12-08 | 锐迪科创微电子（北京）有限公司 | Directional coupler and radio-frequency power amplifier containing same |
-
2014
- 2014-02-18 CN CN201410053943.0A patent/CN103795357B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562425A (en) * | 2009-05-26 | 2009-10-21 | 惠州市正源微电子有限公司 | High-low power combining circuit for radio-frequency power amplifier |
| CN101888213A (en) * | 2010-04-30 | 2010-11-17 | 苏州英诺迅科技有限公司 | Push-pull radio-frequency power amplifier with improved linearity and efficiency |
| CN101908881A (en) * | 2010-07-28 | 2010-12-08 | 锐迪科创微电子（北京）有限公司 | Directional coupler and radio-frequency power amplifier containing same |
Non-Patent Citations (2)
| Title |
|---|
| 多频段下一代通信系统射频前端微波无源器件新设计;黄理焕;《中国优秀硕士学位论文全文数据库(电子期刊)工程科技Ⅱ辑》;20120531;第2012年卷(第5期);第C042-336页 * |
| 带有串联谐振支路的３．４～３．６ ＧＨｚ功率放大器;郝明丽等;《微电子学与计算机》;20130831;第30卷(第8期);第142-146页 * |
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Effective date of registration: 20201217 Address after: 510000 601, building a, 136 Kaiyuan Avenue, Huangpu District, Guangzhou City, Guangdong Province Patentee after: AoXin integrated circuit technology (Guangdong) Co.,Ltd. Address before: 100083 Beijing city Chaoyang District Beitucheng West Road No. 3 Patentee before: Institute of Microelectronics, Chinese Academy of Sciences |
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Effective date of registration: 20220506 Address after: 510000 room 710, Jianshe building, No. 348, Kaifa Avenue, Huangpu District, Guangzhou, Guangdong Patentee after: Ruili flat core Microelectronics (Guangzhou) Co.,Ltd. Address before: 510000 601, building a, 136 Kaiyuan Avenue, Huangpu District, Guangzhou City, Guangdong Province Patentee before: AoXin integrated circuit technology (Guangdong) Co.,Ltd. |