CN105634531B - The front-end circuit and wireless communication system of wireless communication system - Google Patents
The front-end circuit and wireless communication system of wireless communication system Download PDFInfo
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- CN105634531B CN105634531B CN201410606250.XA CN201410606250A CN105634531B CN 105634531 B CN105634531 B CN 105634531B CN 201410606250 A CN201410606250 A CN 201410606250A CN 105634531 B CN105634531 B CN 105634531B
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Abstract
A kind of front-end circuit of wireless communication system includes one first amplifier, one second amplifier and a duplexer.First amplifier is set to a RX path, and wherein first amplifier has an input terminal and an output end, and the input terminal of first amplifier is coupled to one first weld pad.Second amplifier is set to a transmitting path, and wherein second amplifier has an input terminal and an output end, and the output end of second amplifier is coupled to one second weld pad different from first weld pad.The duplexer is coupled between the input terminal of first amplifier and the output end of second amplifier.
Description
Technical field
Disclosed embodiment of this invention is relevant to wireless communication system, espespecially a kind of to support single/non-single antenna
Wireless communication system front-end circuit and associated method.
Background technology
In a wireless communication system, the demand that system can be considered in practice carrys out circuit framework in design chips, wherein one
A emphasis is the configuration of antenna.If the wireless communication system of target is configured using single antenna, i.e., transmission end is shared with receiving terminal
A set of antenna, then can be configured in corresponding wireless communication chips a duplexer be used as transmission and low-noise amplifier it
Between barrier be used；And if the wireless communication system of target is using the configuration of non-single antenna, such as two sets of antennas, i.e. transmission end
A set of antenna is respectively used with receiving terminal, then has complete transmission and low noise amplification in corresponding wireless communication chips
Device, and a duplexer need not be configured.
In order to save the cost of production above two difference chip, also there is the design for merging the above two practice, can join
Fig. 1 is examined, is the first configuration schematic diagram of well known dual-mode wireless communication framework.Wherein be located at a chip in double-mold without
In line communication front-end path 100 simultaneously comprising two sets of low-noise amplifiers (low noise amplifier, LNA) 102 and
104 to receive data, and is respectively coupled to a frequency mixer 108, when the framework of single antenna to be used, low-noise amplifier
104 can be idle or close, and allow low-noise amplifier 102 and to transmit a power amplifier (power of data
Amplifier, PA) 106 share transmission or reception that the antennas 120 outside the chip carry out data；When be intended to use non-list
When the framework of one antenna, Fig. 2 is can refer to, is second of configuration schematic diagram of well known dual-mode wireless communication framework.Wherein position
Data can be received to low-noise amplifier 104 in another antenna 130 outside the chip, and allow and antenna 120 is used alone to transmit
The data that power amplifier 106 is exported, low-noise amplifier 102 can be then blocked, such as utilize low-noise amplifier 102
In duplexer come disconnect low-noise amplifier 102 arrive antenna path.Since power amplifier 106 is single use at this time
Antenna 120, therefore the power amplifier 122 being located at outside the chip can be in addition configured before antenna 120 to enhance power.
It is apparent that system designer can reach single using the chip of same dual-mode wireless communication front-end path 100
The configuration needs of antenna or non-single antenna, however still need in dual-mode wireless communication front-end path 100 while being arranged
Two sets of low-noise amplifiers, cause the waste of hardware cost.In the case where being haggled over every penny for chip size and cost, this
One framework still has improved space.
Invention content
Embodiment of the invention discloses that a kind of wireless communication system front-end circuit for supporting single/non-single antenna and
Correlation technique is to solve the above problems.
The first embodiment of the present invention proposes a kind of front-end circuit of wireless communication system, include one first amplifier,
One second amplifier and a duplexer.First amplifier is set to a RX path, and wherein first amplifier has
One input terminal and an output end, and the input terminal of first amplifier is coupled to one first weld pad.Second amplifier is set
Be placed in a transmitting path, wherein second amplifier has an input terminal and an output end, and second amplifier this is defeated
Outlet is coupled to one second weld pad different from first weld pad.The duplexer system is coupled to the input of first amplifier
Between end and the output end of second amplifier.
The second embodiment of the present invention proposes a kind of wireless communication system, include the front-end circuit of first embodiment with
An and external antenna.Wherein the front-end circuit is set in a chip, and is operated in the single antenna pattern.The external antenna is set
It is placed in except the chip, and is coupled to second weld pad of the front-end circuit.
The third embodiment of the present invention proposes a kind of wireless communication system, include first embodiment the front-end circuit,
One outside reception antenna and an outside transmitting antenna.Wherein the front-end circuit is set in a chip, and is operated in the non-list
One antenna mode.The outside reception antenna is set to except the chip, and is coupled to first weld pad of the front-end circuit.This is outer
Portion's transmitting antenna is set to except the chip, and is coupled to second weld pad of the front-end circuit.
Description of the drawings
Fig. 1 is the first configuration schematic diagram of well known dual-mode wireless communication framework.
Fig. 2 is second of configuration schematic diagram of well known dual-mode wireless communication framework.
Fig. 3 is the first the configuration signal for the wireless communication system front-end circuit that the present invention supports single/non-single antenna
Figure.
Fig. 4 is second of configuration signal of the wireless communication system front-end circuit that the present invention supports single/non-single antenna
Figure.
Wherein, the reference numerals are as follows：
100 dual-mode wireless communication front-end paths
102,104,432 low-noise amplifier
106,122,422 power amplifier
108 frequency mixers
120,130,320,420,430 antenna
300 front-end circuits
302 low noise amplifier modules
3022,3024 transistor
304 duplexers
306 power amplifier modules
308,310 frequency mixer
Specific implementation mode
Some vocabulary has been used in specification and claims to censure specific element.It is common in fields
Technical staff is, it is to be appreciated that manufacturer may call same element with different nouns.This specification and claims
Book is used as the standard of differentiation with the difference of element functionally not in such a way that the difference of title is used as and distinguishes element
Then.Be an open term in the "comprising" of specification in the whole text and claim mentioned in, thus should be construed to " include but
It is not limited to ".In addition, " coupling " word includes any direct and indirect electrical connection herein.Therefore, if it is described herein that
One first device is coupled to a second device, then the second device can be directly electrically connected in by representing the first device, or be passed through
Other devices or connection means are electrically connected indirectly to the second device.
Fig. 3 is the first the configuration signal for the wireless communication system front-end circuit that the present invention supports single/non-single antenna
Figure.A wherein front-end circuit 300 is located in a wireless communication system chip, and an antenna 320 is then located at the wireless communication system
Except chip, such as the wireless communication system chip can be set on a printed circuit board, and antenna 320 is then similarly provided at
The printed circuit board, and the cabling on the printed circuit board is linked up with the wireless communication system chip.The wireless communication
System on Chip/SoC also may include other transmission/receiving modules in addition to front-end circuit 300, for example, filter, digital analog converter,
Analog-digital converter, baseband circuit, the present invention are seldom construed as limiting, but be should be noted only to depict in Fig. 3 and be more relevant to this hair
The part of bright feature.Since single antenna 320, the low noise amplification in front-end circuit 300 being used only in the configuration of Fig. 3
Device module 302 and a power amplifier module 306 can be all coupled to via a weld pad (pad) P1 of the wireless communication system chip
Antenna 320 outside the wireless communication system chip.When receiving data, power amplifier module 306 can be closed, and an antenna
Switch 304 can be connected, it is noted that switch 304 can include a match circuit, and can provide impedance appropriate
Prepare to allow and receive data and be able to completely enter low noise amplifier module 302, then via a frequency mixer 308 by data from height
Frequency carrier wave, which takes out, receives data；When transmitting data, power amplifier module 306 can then be enabled, and duplexer 304 can quilt
It disconnects allowing between low noise amplifier module 302 and antenna 320 be blocked and come, the data to be transmitted can be via a mixing
Device 310 is loaded onto high frequency and is sent to antenna 320, wherein between front-end circuit 300 and antenna 320 by power amplifier module 306
It may include another match circuit.
The spirit of the front-end circuit 300 of the present invention is compared to well known dual-mode wireless communication front end road in Fig. 1 and Fig. 2
Diameter 100, front-end circuit 300 only used a set of low noise amplifier module 302.Therefore, the low noise amplification of front-end circuit 300
Device module 302 is designed to a common-gate low noise amplifier (common gate low noise amplifier, CGLNA), and
The point (feed point) that will feed is designed in differential transistor pair 3022 and 3024 respective source electrodes, and is respectively coupled to weld pad P2
And P3.When that toward from the point of view of feeding, can obtain equivalent parallel connection (shunt) rlc circuit from chip exterior, benefit is to work as low noise
When amplifier module 302 is coupled to external antenna from weld pad P2 and P3, wider impedance matching can be enjoyed and higher connect
Receive stability, that is, second of configuration below.
Fig. 4 is second of configuration signal of the wireless communication system front-end circuit that the present invention supports single/non-single antenna
Figure.Please note that Fig. 3 is identical with the front-end circuit 300 in Fig. 4, difference, which is only that except the wireless communication system chip, is
It is under unified central planning set it is different.One antenna 420 is located at except the wireless communication system chip, and only for the power in front-end circuit 300
Amplifier module 306 uses；Another antenna 430 is located at except the wireless communication system chip, and only in front-end circuit 300
Low noise amplifier module 302 uses.Under this arrangement, can also in addition antenna 420 and the wireless communication system chip it
Between a power amplifier 422 and/or a match circuit are set, and set between antenna 430 and the wireless communication system chip
A low-noise amplifier 432 and/or another match circuit are set, further to reinforce the efficiency for transmitting and receiving, however this hair
It is bright not limited with this.
Specifically, the low noise amplifier module 302 of front-end circuit 300 is coupled to the channel radio via weld pad P2 and P3
Believe that the low-noise amplifier 432 except System on Chip/SoC, the power amplifier module 306 of front-end circuit 300 are coupled via weld pad P1
Power amplifier 422 to except the wireless communication system chip.Further, since low noise amplifier module 302 under this configuration
A set of antenna is respectively used with power amplifier module 306, so duplexer 304 can remain open, it is good by low noise amplification
Barrier is come between device module 302 and antenna 420.
The wireless communication system front-end circuit of single/non-single antenna of support of the present invention is not limited to specific wireless
Communication system, such as can be single ended system or differential system.It is used as two kinds of moulds by using common-gate low noise amplifier
The all workable shared low noise amplifier of formula can reduce the cost of hardware and keep the configuration elasticity of script.
It is above-mentioned about the present invention idea can by semiconductor realize in any integrated circuit, including radio frequency and/or
Synchronous clock pulse application.Such as the present invention can be realized in the design of individual semiconductor, or realize integrated in specific application
In circuit and/or any other subsystem.
Although the present invention has been combined some embodiments and is illustrated, the present invention is not limited in this specification
Particular form illustrates.On the contrary, the scope of the present invention is only limited by the attached claims.In addition, although inventive features can
Energy tying closes specific embodiment to describe, but those skilled in the art should understand that the various features of described embodiment can
To be combined according to the present invention.In the claims, term "comprising" does not exclude the existence of other components or steps.
In addition, the sequence of feature in the claims is not meant to any particular order having to carry out, and method is weighed
The sequence of each step is not meant to that these steps must sequentially be executed according to this during profit requires.On the contrary, can be to appoint
What suitably sequentially executes these steps.In addition, singular reference be not excluded for it is multiple.Therefore, " one ", " first ", " second " etc.
Term is not precluded multiple.
This specification proposes a kind of wireless communication system front-end circuit that supporting single/non-single antenna and related side
Method so that the shortcomings that prior art is significantly improved.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to the claims in the present invention with repair
Decorations should all belong to the covering scope of the present invention.
Claims (7)
1. a kind of front-end circuit of wireless communication system is set in a chip and is operable in a single antenna pattern and one
Non- single antenna pattern, the front-end circuit include：
One first amplifier, is set to a RX path, and wherein first amplifier has an input terminal and an output end, and
The input terminal of first amplifier is coupled to one first weld pad；
One second amplifier, is set to a transmitting path, and wherein second amplifier has an input terminal and an output end, and
The output end of second amplifier is coupled to one second weld pad different from first weld pad；And
One duplexer is coupled between the input terminal of first amplifier and the output end of second amplifier；
Wherein, when the front-end circuit is operated in the single antenna pattern, which, which is coupled to, is set to except the chip
One first external antenna, and the duplexer is set to conducting state；When the front-end circuit is operated in the non-single antenna mould
When formula, which is coupled to one second external antenna being set to except the chip, which, which is coupled to, is set to
A third external antenna except the chip, and the duplexer is set to off-state.
2. front-end circuit as described in claim 1, wherein first amplifier be a common-gate low noise amplifier, and this first
The input terminal of amplifier is the source electrode of the common-gate low noise amplifier, and the output end of first amplifier is the total grid low noise
The drain electrode of acoustic amplifier.
3. front-end circuit as described in claim 1, wherein：
When the front-end circuit is operated in the non-single antenna pattern, an external amplifier is set to except the chip, and is coupled
Between the front-end circuit and second external antenna or the third external antenna.
4. a kind of wireless communication system comprising：
The front-end circuit of wireless communication system, the front-end circuit are set in a chip, and are operated in a non-single antenna pattern,
The front-end circuit includes：
One first amplifier, is set to a RX path, and wherein first amplifier has an input terminal and an output end, and
The input terminal of first amplifier is coupled to one first weld pad；
One second amplifier, is set to a transmitting path, and wherein second amplifier has an input terminal and an output end, and
The output end of second amplifier is coupled to one second weld pad different from first weld pad；
One duplexer is coupled between the input terminal of first amplifier and the output end of second amplifier；
Wherein, which further includes：
One outside reception antenna, is set to except the chip, and is coupled to first weld pad of the front-end circuit；And
One outside transmitting antenna, is set to except the chip, and is coupled to second weld pad of the front-end circuit.
5. wireless communication system as claimed in claim 4, first amplifier wherein in the front-end circuit is that grid are low altogether
Noise amplifier, and the source electrode that the input terminal of first amplifier is the common-gate low noise amplifier, first amplifier
The output end is the drain electrode of the common-gate low noise amplifier.
6. wireless communication system as claimed in claim 4, also includes：
One external amplifier is set to except the chip, and is coupled between the front-end circuit and the outside transmitting antenna.
7. wireless communication system as claimed in claim 4, also includes：
One external amplifier is set to except the chip, and is coupled between the front-end circuit and the outside reception antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606250.XA CN105634531B (en) | 2014-10-30 | 2014-10-30 | The front-end circuit and wireless communication system of wireless communication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606250.XA CN105634531B (en) | 2014-10-30 | 2014-10-30 | The front-end circuit and wireless communication system of wireless communication system |
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| Publication Number | Publication Date |
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| CN105634531A CN105634531A (en) | 2016-06-01 |
| CN105634531B true CN105634531B (en) | 2018-09-04 |
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| CN201410606250.XA Active CN105634531B (en) | 2014-10-30 | 2014-10-30 | The front-end circuit and wireless communication system of wireless communication system |
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| CN1792041A (en) * | 2003-03-19 | 2006-06-21 | 索尼爱立信移动通讯股份有限公司 | A switchable antenna arrangement |
| CN101159441A (en) * | 2007-11-07 | 2008-04-09 | 络达科技股份有限公司 | Front end circuit structure of wireless transceiver |
| CN101312356A (en) * | 2007-05-25 | 2008-11-26 | 启碁科技股份有限公司 | Expendable wireless signal receiving and transmitting device |
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| CN102347780A (en) * | 2011-08-19 | 2012-02-08 | 中国科学技术大学 | Radio frequency receiving front-end circuit with adjustable gain |
| CN103716062A (en) * | 2013-12-03 | 2014-04-09 | 北京中电华大电子设计有限责任公司 | Radio-frequency circuit integrating low-noise amplifier, power amplifier, and antenna switch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7212788B2 (en) * | 2002-08-13 | 2007-05-01 | Atheros Communications, Inc. | Method and apparatus for signal power loss reduction in RF communication systems |
| TW201019620A (en) * | 2008-11-04 | 2010-05-16 | Ra Link Technology Corp | Front-end architecture of RF transceiver and transceiver chip thereof |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792041A (en) * | 2003-03-19 | 2006-06-21 | 索尼爱立信移动通讯股份有限公司 | A switchable antenna arrangement |
| CN101312356A (en) * | 2007-05-25 | 2008-11-26 | 启碁科技股份有限公司 | Expendable wireless signal receiving and transmitting device |
| CN101159441A (en) * | 2007-11-07 | 2008-04-09 | 络达科技股份有限公司 | Front end circuit structure of wireless transceiver |
| CN101916992A (en) * | 2010-07-28 | 2010-12-15 | 锐迪科创微电子（北京）有限公司 | pHEMT (pseudomorphic High Electron Mobility Transistor) radio frequency switch ESD (Electrostatic Discharge) protection device and radio frequency front end module including same |
| CN102347780A (en) * | 2011-08-19 | 2012-02-08 | 中国科学技术大学 | Radio frequency receiving front-end circuit with adjustable gain |
| CN103716062A (en) * | 2013-12-03 | 2014-04-09 | 北京中电华大电子设计有限责任公司 | Radio-frequency circuit integrating low-noise amplifier, power amplifier, and antenna switch |
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| Publication number | Publication date |
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| CN105634531A (en) | 2016-06-01 |
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