CN105634531A - Front end circuit for wireless communication system, and wireless communication system - Google Patents
Front end circuit for wireless communication system, and wireless communication system Download PDFInfo
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- CN105634531A CN105634531A CN201410606250.XA CN201410606250A CN105634531A CN 105634531 A CN105634531 A CN 105634531A CN 201410606250 A CN201410606250 A CN 201410606250A CN 105634531 A CN105634531 A CN 105634531A
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- amplifier
- end circuit
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- communication system
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Abstract
The invention discloses a front end circuit for a wireless communication system, and the front end circuit comprises a first amplifier, a second amplifier, and an antenna switch. The first amplifier is disposed on a receiving path, and is provided with a first input end and an output end, wherein the input end of the first amplifier is coupled to the first bonding pad. The second amplifier is disposed on a transmission path, and is provided with a first input end and a second output end, wherein the output end of the second amplifier is coupled to a second bonding pad different from the first bonding pad. The antenna switch is coupled between the first input end of the first amplifier and the output end of the second amplifier.
Description
Technical field
Disclosed embodiment of this invention is relevant to wireless communication system, espespecially a kind of wireless communication system front-end circuit supporting single/non-single antenna and associated method.
Background technology
In a wireless communication system, practice being considered the circuit framework that the demand of system is come in design chips, one of them is it is important that the configuration of antenna. If the wireless communication system of target adopts single antenna configuration, namely transmission end and receiving terminal share a set of antenna, then can configure a duplexer in corresponding wireless communication chips and be used as transmitting the use of the obstruct between low-noise amplifier; And if the wireless communication system of target adopts the configuration of non-single antenna, such as two set antenna, namely transmission end and receiving terminal each use a set of antenna, then have complete transmission and low-noise amplifier in corresponding wireless communication chips, and need not configure a duplexer.
In order to save the cost producing above two difference chip, also having the design above two practice merged, be referred to Fig. 1, it is the first configuration schematic diagram of known dual-mode wireless communication framework. The double-mold radio communication front-end path 100 being wherein arranged in a chip comprises two set low-noise amplifier (lownoiseamplifier simultaneously, LNA) 102 and 104 in order to receive data, and it is respectively coupled to a frequency mixer 108, when being intended to the framework using single antenna, low-noise amplifier 104 meeting is idle or closes, and allow low-noise amplifier 102 and the power amplifier (poweramplifier, PA) 106 in order to transmit data share the antenna 120 being positioned at outside this chip and to carry out transmission or the reception of data; When being intended to the framework using non-single antenna, being referred to Fig. 2, it is the second configuration schematic diagram of known dual-mode wireless communication framework. Another antenna 130 being wherein positioned at outside this chip can receive data to low-noise amplifier 104, and allow and be used alone antenna 120 and carry out the data that delivering power amplifier 106 exports, low-noise amplifier 102 then can be blocked, for instance utilizes the duplexer in low-noise amplifier 102 to disconnect the low-noise amplifier 102 path to antenna. Owing to now power amplifier 106 is single use antenna 120, therefore can additionally configure the power amplifier 122 being positioned at outside this chip before antenna 120 to strengthen power.
Significantly, system designer can use the chip of same dual-mode wireless communication front-end path 100 to reach single antenna or the configuration needs of non-single antenna, but need nonetheless remain for arranging two set low-noise amplifiers in dual-mode wireless communication front-end path 100, cause the waste of hardware cost. simultaneously When haggling over every penny for die size and cost, this framework still has the space of improvement.
Summary of the invention
Embodiment of the invention discloses that a kind of wireless communication system front-end circuit supporting single/non-single antenna and associated method is to solve the problems referred to above.
The first embodiment of the present invention proposes the front-end circuit of a kind of wireless communication system, includes one first amplifier, one second amplifier and a duplexer. This first amplifier is arranged at a RX path, and wherein this first amplifier has an input and an outfan, and this input of this first amplifier is coupled to one first weld pad. This second amplifier is arranged at a transmission path, and wherein this second amplifier has an input and an outfan, and this outfan of this second amplifier is coupled to one second weld pad being different from this first weld pad. This duplexer system is coupled between this input of this first amplifier and this outfan of this second amplifier.
The second embodiment of the present invention proposes a kind of wireless communication system, includes this front-end circuit and an exterior antenna of first embodiment. Wherein this front-end circuit is arranged in a chip, and operation is in this single antenna pattern. This exterior antenna is arranged at outside this chip, and is coupled to this second weld pad of this front-end circuit.
The third embodiment of the present invention proposes a kind of wireless communication system, includes this front-end circuit of first embodiment, an external reception antenna and an outside transmission antenna. Wherein this front-end circuit is arranged in a chip, and operation is in this non-single antenna pattern. This external reception antenna is arranged at outside this chip, and is coupled to this first weld pad of this front-end circuit. This outside is transmitted antenna and is arranged at outside this chip, and is coupled to this second weld pad of this front-end circuit.
Accompanying drawing explanation
Fig. 1 is the first configuration schematic diagram of known dual-mode wireless communication framework.
Fig. 2 is the second configuration schematic diagram of known dual-mode wireless communication framework.
Fig. 3 is the first configuration schematic diagram that the present invention supports the wireless communication system front-end circuit of single/non-single antenna.
Fig. 4 is the second configuration schematic diagram that the present invention supports the wireless communication system front-end circuit of single/non-single antenna.
Wherein, description of reference numerals is 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
Detailed description of the invention
Some vocabulary is employed to censure specific element in the middle of specification and claims. Those of ordinary skill in art is it is to be appreciated that same element may be called with different nouns by manufacturer. This specification and claims book is not used as distinguishing in the way of element by the difference of title, but is used as the criterion distinguished with element difference functionally. " comprising " mentioned in the middle of description and claim in the whole text is an open term, therefore should be construed to " comprise but be not limited to ". It addition, " coupling " word comprises any directly and indirectly electrical connection at this. Therefore, if a first device described in literary composition is coupled to one second device, then represents this first device and can directly be electrically connected in this second device, or be indirectly electrically connected to this second device by other devices or connection means.
Fig. 3 is the first configuration schematic diagram that the present invention supports the wireless communication system front-end circuit of single/non-single antenna. Wherein a front-end circuit 300 is positioned at a wireless communication system chip, one antenna 320 is then positioned at outside this wireless communication system chip, such as this wireless communication system chip can be arranged on a printed circuit board (PCB), antenna 320 is then similarly provided at this printed circuit board (PCB), and links up by the cabling on this printed circuit board (PCB) and this wireless communication system chip. This wireless communication system chip is except front-end circuit 300, also other transmission/receiver module can be comprised, such as wave filter, digital analog converter, analog-digital converter, baseband circuit, the present invention is seldom construed as limiting, but should be noted and only depict the part being comparatively relevant to feature of present invention in Fig. 3. Owing to only using single antenna 320 in the configuration of Fig. 3, therefore the low noise amplifier module 302 in front-end circuit 300 and a power amplifier module 306 all can be coupled to the antenna 320 outside this wireless communication system chip via a weld pad (pad) P1 of this wireless communication system chip. When receiving data, power amplifier module 306 can be closed, and a duplexer 304 can turn on, it should be noted, switch 304 can include a match circuit, and the impedance matching that can provide suitable allows well reception data be able to intactly entrance low noise amplifier module 302, then through by a frequency mixer 308, from high frequency carrier, data is taken out reception data; When transmitting data, power amplifier module 306 then can be enabled, and duplexer 304 can be disconnected to allow be blocked between low noise amplifier module 302 and antenna 320 and come, the data being intended to transmit just can be loaded onto high frequency via a frequency mixer 310 and deliver to antenna 320 through power amplifier module 306, wherein can comprise another match circuit between front-end circuit 300 and antenna 320.
The spirit of the front-end circuit 300 of the present invention is in that the known dual-mode wireless communication front-end path 100 compared in Fig. 1 and Fig. 2, and front-end circuit 300 only used a set of low noise amplifier module 302. Therefore, the low noise amplifier module 302 of front-end circuit 300 is designed to grid low-noise amplifier (commongatelownoiseamplifier altogether, CGLNA), and point (feedpoint) of feeding designs at differential transistor the respective source electrode in 3022 and 3024, and it is respectively coupled to weld pad P2 and P3. When from chip exterior toward feeding a little, parallel connection (shunt) rlc circuit of an equivalence can be obtained, its benefit is when low noise amplifier module 302 is coupled to the antenna of outside from weld pad P2 and P3, wider impedance matching and higher reception degree of stability can be enjoyed, namely following the second configuration.
Fig. 4 is the second configuration schematic diagram that the present invention supports the wireless communication system front-end circuit of single/non-single antenna. Please noting that the front-end circuit 300 in Fig. 3 and Fig. 4 is identical, difference is only that the system configuration outside this wireless communication system chip is different. One antenna 420 is positioned at outside this wireless communication system chip, and the power amplifier module 306 being intended in front-end circuit 300 uses; Another antenna 430 is positioned at outside this wireless communication system chip, and the low noise amplifier module 302 being intended in front-end circuit 300 uses. Under this arrangement, one power amplifier 422 and/or a match circuit can also be additionally set between antenna 420 and this wireless communication system chip, and a low-noise amplifier 432 and/or another match circuit are set between antenna 430 and this wireless communication system chip, to strengthen the usefulness transmitting and receiving further, but the present invention does not limit with this.
Specifically, the low noise amplifier module 302 of front-end circuit 300 is coupled to the low-noise amplifier 432 outside this wireless communication system chip via weld pad P2 and P3, and the power amplifier module 306 of front-end circuit 300 is coupled to the power amplifier 422 outside this wireless communication system chip via weld pad P1. Additionally, due to the lower low noise amplifier module 302 of this configuration and power amplifier module 306 each use a set of antenna, so duplexer 304 can remain open, come intercepting between low noise amplifier module 302 and antenna 420 well.
The support of the present invention is single/and the wireless communication system front-end circuit of non-single antenna is not limited to specific wireless communication system, for instance can be single ended system or differential system. It is used as all spendable shared low noise amplifier of both of which, it is possible to reduce the cost of hardware and keep configuration originally elastic by using grid low-noise amplifier altogether.
The above-mentioned idea about the present invention can realize in any integrated circuit by quasiconductor, comprises radio frequency and/or synchronizes seasonal pulse application. Such as the present invention can be realized in independent quasiconductor design, or realize in ASIC and/or other subsystem any.
Although the present invention is already in connection with certain embodiments have been explanation, but the present invention is not limited to the particular form in this description and sets forth. The scope of the present invention limits on the contrary, only to be limited by appended claim. Although describing additionally, inventive features is likely to tying conjunction specific embodiment, but the various features that those skilled in the art is to be understood that described embodiment can being combined according to the present invention. In the claims, term is not excluded for " comprising " existence of other elements or step.
Additionally, the order that feature is in the claims is not meant to any particular order having to carry out, and in claim to a method, the order of each step is not meant to these steps and must perform according to this order. On the contrary, these steps can be performed in any suitable order. Additionally, singular reference is not excluded for multiple. Therefore, the term such as " ", " first ", " second " is not precluded from multiple.
This description proposes a kind of wireless communication system front-end circuit supporting single/non-single antenna and associated method so that the shortcoming of prior art is significantly improved.
The foregoing is only presently preferred embodiments of the present invention, all equalizations done according to the claims in the present invention change and modify, and all should belong to the covering scope of the present invention.
Claims (10)
1. the front-end circuit of a wireless communication system, it is characterised in that include:
One first amplifier, is arranged at a RX path, and wherein this first amplifier has an input and an outfan, and this input of this first amplifier is coupled to one first weld pad;
One second amplifier, is arranged at a transmission path, and wherein this second amplifier has an input and an outfan, and this outfan of this second amplifier is coupled to one second weld pad being different from this first weld pad; And
One duplexer, is coupled between this input of this first amplifier and this outfan of this second amplifier.
2. front-end circuit as claimed in claim 1, wherein this first amplifier is grid low-noise amplifier altogether, and the source electrode that this input of this first amplifier is this common grid low-noise amplifier, and the drain electrode that this outfan of this low-noise amplifier is this common grid low-noise amplifier.
3. front-end circuit as claimed in claim 1, wherein this front-end circuit is operable in a single antenna pattern and a non-single antenna pattern, and this duplexer carrys out switching between conducting and disconnection according to the pattern of this front-end circuit.
4. a wireless communication system, it is characterised in that include:
Front-end circuit as claimed in claim 3, wherein this front-end circuit is arranged in a chip, and operation is in this single antenna pattern; And
One exterior antenna, is arranged at outside this chip, and is coupled to this second weld pad of this front-end circuit.
5. wireless communication system as claimed in claim 4, wherein this first amplifier in this front-end circuit is grid low-noise amplifier altogether, and the source electrode that this input of this first amplifier is this common grid low-noise amplifier, this outfan of this first amplifier is the drain electrode of this common grid low-noise amplifier.
6. wireless communication system as claimed in claim 4, also includes:
One external amplifier, is arranged at outside this chip, and is coupled between this front-end circuit and this exterior antenna.
7. a wireless communication system, it is characterised in that include:
Front-end circuit as claimed in claim 3, wherein this front-end circuit is arranged in a chip, and operation is in this non-single antenna pattern;
One external reception antenna, is arranged at outside this chip, and is coupled to this first weld pad of this front-end circuit; And
One outside transmission antenna, is arranged at outside this chip, and is coupled to this second weld pad of this front-end circuit.
8. wireless communication system as claimed in claim 7, wherein this first amplifier in this front-end circuit is grid low-noise amplifier altogether, and the source electrode that this input of this first amplifier is this common grid low-noise amplifier, this outfan of this first amplifier is the drain electrode of this common grid low-noise amplifier.
9. wireless communication system as claimed in claim 7, also includes:
One external amplifier, is arranged at outside this chip, and is coupled between this front-end circuit and this outside transmission antenna.
10. wireless communication system as claimed in claim 7, also includes:
One external amplifier, is arranged at outside this chip, and is coupled between this front-end circuit and this external 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN105634531A true CN105634531A (en) | 2016-06-01 |
| CN105634531B 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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Citations (8)
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| US20040033787A1 (en) * | 2002-08-13 | 2004-02-19 | David Weber | Method and apparatus for signal power loss reduction in RF communication systems |
| 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 |
| US20100109798A1 (en) * | 2008-11-04 | 2010-05-06 | Ralink Technology Corporation | Front-end architecture of rf transceiver and transceiver chip thereof |
| 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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2014
- 2014-10-30 CN CN201410606250.XA patent/CN105634531B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040033787A1 (en) * | 2002-08-13 | 2004-02-19 | David Weber | Method and apparatus for signal power loss reduction in RF communication systems |
| 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 |
| US20100109798A1 (en) * | 2008-11-04 | 2010-05-06 | Ralink Technology Corporation | Front-end architecture of rf transceiver and transceiver chip thereof |
| 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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| CN105634531B (en) | 2018-09-04 |
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