CN201663236U - Antenna and mobile terminal - Google Patents
Antenna and mobile terminal Download PDFInfo
- Publication number
- CN201663236U CN201663236U CN2010201236856U CN201020123685U CN201663236U CN 201663236 U CN201663236 U CN 201663236U CN 2010201236856 U CN2010201236856 U CN 2010201236856U CN 201020123685 U CN201020123685 U CN 201020123685U CN 201663236 U CN201663236 U CN 201663236U
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- China
- Prior art keywords
- antenna
- sub
- frequency range
- demodulator
- portable terminal
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- 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 - Lifetime
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Abstract
The utility model provides an antenna which comprises an uplink transmitting sub-antenna, a downlink receiving sub-antenna, an uplink power amplifier circuit, a downlink low-noise amplifier circuit and a modulator-demodulator; one end of the uplink power amplifier circuit is connected with the uplink transmitting sub-antenna, and the other end of the uplink power amplifier circuit is connected with the modulator-demodulator; one end of the downlink low-noise amplifier circuit is connected with the downlink receiving sub-antenna; correspondingly, the utility model also provides a mobile terminal; since the frequency ranges between the uplink transmitting sub-antenna and the downlink receiving sub-antenna are non-crossed, an active isolation is naturally formed between the uplink transmitting sub-antenna and the downlink receiving sub-antenna; since a diplexer, a filter and other devices for enhancing circuit isolation can be omitted during the circuit design, the material cost of the mobile terminal can be effectively reduced; and since the uplink transmitting sub-antenna and the downlink receiving sub-antenna only cover the uplink frequency range and the downlink frequency range of the duplexing frequency range without covering the extra intermediate protective frequency range, the volume of the antenna can be greatly reduced, and conveniences are provided for better fusion design between the antenna and the casing structure of the machine body.
Description
Technical field
The utility model relates to the communications field, relates in particular to a kind of antenna and portable terminal.
Background technology
The antenna of existing portable terminal is generally the one design, bandwidth generally is designed to cover the duplex band and the middle isolation frequency range of its work, since the beamwidth of antenna with and volume be directly proportional, it is wide that the antenna of prior art covers frequency range, therefore its volume ratio is bigger, it is more to take the portable terminal inner space, Antenna Design is dumb, and because the one of antenna design, on the circuit in order to guarantee the isolation of uplink and downlink, generally the front end at antenna need increase isolating devices such as duplexer, makes mobile phone Material Cost height.
Antenna structure can be introduced in conjunction with Fig. 1, Fig. 2 in the existing portable terminal, Fig. 1 is an antenna circuit structure chart of the prior art, comprising: duplexer 12, up power amplifier 13, descending LNA circuit 14 and modulator-demodulator 15 that the antenna 11 of duplexing portable terminals such as the GSM of traditional scheme or CDMA, solution transmitting-receiving are isolated; Wherein, antenna 11 adopts the one design, bandwidth generally is designed to cover the duplex band and the middle isolation frequency range of its work, because the beamwidth of antenna is directly proportional with volume, frequency range is wide because antenna covers, and its volume ratio is bigger, and because the one design of antenna 11, in order to guarantee the isolation of uplink and downlink, need increase duplexer 12 isolating devices such as grade at the front end of antenna 11 and receive and dispatch isolation on the circuit.When portable terminal utilized the antenna among Fig. 1 to carry out work, received signal inserted through antenna 11, sent into modulator-demodulator 15 after by descending LNA circuit 14 received signal being amplified behind the duplexer 12 again; Transmitting produces through modulator-demodulator 15, amplifies after after the duplexer isolation, finish the signal emission from antenna 11 through up power amplifier 13.Fig. 2 applies to structure chart in the portable terminal for antenna among Fig. 1, because antenna 11 volume ratios are bigger, as shown in Figure 2, it is big that antenna 11 takies the portable terminal inner space, can not compare design flexible with fuselage 16.
The utility model content
Defective in view of above-mentioned prior art; the utility model embodiment provides a kind of antenna and portable terminal; utilize the Frequency Division Duplexing (FDD) principle of portable terminals such as GSM and CDMA; reach the principle that the beamwidth of antenna is directly proportional with volume; the antenna that portable terminal is original resolves into a plurality of sub antennas; sub antenna only need cover the upstream or downstream frequency range of duplex band; do not protect frequency range and do not need to cover unnecessary centre; antenna volume can reduce greatly; be convenient to antenna and the body shell structure better merges design; and because the sub antenna after decomposing only covers the upstream or downstream frequency range of duplex band; antenna frequency range does not each other intersect mutually; naturally form effective isolation between the transmitting-receiving, can save duplexer during circuit design; filters etc. increase the device that circuit is isolated, and can effectively reduce the portable terminal Material Cost.
In order to reach above-mentioned technique effect, the utility model embodiment provides a kind of antenna, is applied to comprise in the portable terminal: up emission sub antenna, descending reception sub antenna, up power amplifier, descending LNA circuit and modulator-demodulator;
Described up power amplifier one end links to each other with described up emission sub antenna, and the other end links to each other with described modulator-demodulator;
Described descending LNA circuit one end links to each other with described descending reception sub antenna, and the other end links to each other with described adjustment demodulator.
Accordingly, the utility model also provides a kind of portable terminal, and described portable terminal comprises the antenna that at least one cover the utility model provides.
Implement the utility model embodiment, during portable terminal work, received signal inserts through descending reception sub antenna, directly through descending LNA circuit received signal is sent into modulator-demodulator; Transmit and produce by modulator-demodulator; after amplifying, directly launches up power amplifier by up emission sub antenna; frequency range is not intersected mutually between described up emission sub antenna and the described descending reception sub antenna; naturally form effective isolation between the transmitting-receiving; can save duplexer during circuit design; filters etc. increase the device that circuit is isolated; can effectively reduce the portable terminal Material Cost; and because described up emission sub antenna and described descending reception sub antenna only cover the up of duplex band; band downlink; do not protect frequency range and do not need to cover unnecessary centre; antenna volume can reduce greatly, is convenient to antenna and the body shell structure better merges design.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is in the prior art, the antenna circuit structure chart;
Fig. 2 is installed on structural representation in the portable terminal with the antenna among Fig. 1;
Fig. 3 is the structure chart of antenna among the utility model embodiment;
Fig. 4 is the structural representation that the portable terminal of antenna among Fig. 3 is housed among the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Among the utility model embodiment; the antenna of portable terminal utilizes the Frequency Division Duplexing (FDD) principle of portable terminals such as GSM and CDMA; reach the principle that the beamwidth of antenna is directly proportional with volume; the antenna that portable terminal is original resolves into a plurality of sub antennas; sub antenna only need cover the upstream or downstream frequency range of duplex band; do not protect frequency range and do not need to cover unnecessary centre; antenna volume can reduce greatly; be convenient to antenna and the body shell structure better merges design; and because the sub antenna after decomposing only covers the upstream or downstream frequency range of duplex band; antenna frequency range does not each other intersect mutually; naturally form effective isolation between the transmitting-receiving; can save duplexer during circuit design; filters etc. increase the device that circuit is isolated, and can effectively reduce the portable terminal Material Cost.
Below in conjunction with the detailed description the utility model preferred embodiment of Fig. 3, Fig. 4.
Referring to Fig. 3, the structural representation for antenna among the utility model embodiment comprises: up emission sub antenna 21, descending reception sub antenna 22, up power amplifier 23, descending LNA circuit 24 and modulator-demodulator 25;
Described up power amplifier 23 1 ends directly link to each other with described up emission sub antenna 21, and the other end links to each other with described modulator-demodulator 25, and described up emission sub antenna 21 covers the uplink band of duplex band;
Described descending LNA circuit 24 1 ends directly link to each other with described descending reception sub antenna 22; the other end links to each other with described adjustment demodulator 25; described descending reception sub antenna 22 covers the band downlink of duplex band, and the protection frequency range in the middle of the duplex band does not have corresponding antenna to cover.
Described modulator-demodulator can be GSM signal modem or CDMA signal modem, can also carry out the pairing modulator-demodulator of pattern of receiving and transmitting signal for the Frequency Division Duplexing (FDD) principle of utilizing of other patterns, when the antenna among the utility model embodiment applies to GSM, CDMA or other and utilizes the portable terminal of Frequency Division Duplexing (FDD) principle, modulator-demodulator is corresponding adjustment demodulator, accordingly, up power amplifier, descending LNA circuit also are that portable terminal according to different mode carries out respective design.
When the antenna that portable terminal utilizes the utility model embodiment to provide carried out work, received signal inserted through descending reception sub antenna 22, directly through descending LNA circuit 24 received signal is sent into modulator-demodulator 25; Transmit and produce through modulator-demodulator 25; after amplifying, directly launches up power amplifier 23 by up emission sub antenna 21; described up emission sub antenna 21 covers the uplink band of duplex band; described descending reception sub antenna 22 covers the band downlink of duplex band; protection frequency range in the middle of the duplex band does not have corresponding antenna to cover; therefore frequency range is not intersected mutually between described up emission sub antenna 21 and the described descending reception sub antenna 22; naturally form effective isolation between the transmitting-receiving; can save duplexer during circuit design; filters etc. increase the device that circuit is isolated; can effectively reduce the portable terminal Material Cost; and because described up emission sub antenna 21 covers the up of duplex band with 22 of described descending reception sub antennas; band downlink; do not protect frequency range and do not need to cover unnecessary centre; antenna volume can reduce greatly, is convenient to antenna and the body shell structure better merges design.
When the antenna of the utility model embodiment applies in the portable terminal, can be referring to the structural representation of Fig. 4.
Referring to Fig. 4, for the structural representation of the portable terminal of antenna among Fig. 3 is housed among the utility model embodiment, because frequency range is not intersected mutually between up emission sub antenna 21 and the described descending reception sub antenna 22, naturally form effective isolation between the transmitting-receiving, can save duplexer, filter etc. during circuit design and increase the device that circuit is isolated, allow up emission sub antenna 21 directly link to each other with up power amplifier 23, and described descending reception sub antenna 22 directly links to each other with described descending LNA circuit 24, can effectively reduce the portable terminal Material Cost; And because 22 up, band downlinks that cover duplex band of described up emission sub antenna 21 and described descending reception sub antenna; do not protect frequency range and do not need to cover unnecessary centre; antenna volume can reduce greatly; be convenient to antenna and the body shell structure better merges design; as Fig. 4, antenna only takies portable terminal fuselage 26 inner less spaces.
The utility model also provides a kind of portable terminal; the antenna that comprises at least one cover the utility model embodiment design; described portable terminal can be GSM; CDMA etc. utilize the portable terminal of Frequency Division Duplexing (FDD) principle; also can be bimodulus or multi-module mobile terminal; when portable terminal is the portable terminal of independent a kind of pattern; when being GSM mobile termination or cdma mobile terminal as portable terminal; the antenna that only need comprise cover the utility model embodiment design; as Fig. 4 structure; and when portable terminal is the mode mobile terminal of support GSM and two kinds of patterns of CDMA; portable terminal fuselage inside need comprise the designed antenna of two cover the utility model; the portable terminal of other patterns is analogized with this principle, does not enumerate one by one at this.
Implement the utility model embodiment, during portable terminal work, received signal inserts through descending reception sub antenna, directly through descending LNA circuit received signal is sent into modulator-demodulator; Transmit and produce by modulator-demodulator; after amplifying, directly launches up power amplifier by up emission sub antenna; frequency range is not intersected mutually between described up emission sub antenna and the described descending reception sub antenna; naturally form effective isolation between the transmitting-receiving; can save duplexer during circuit design; filters etc. increase the device that circuit is isolated; can effectively reduce the portable terminal Material Cost; and because described up emission sub antenna and described descending reception sub antenna only cover the up of duplex band; band downlink; do not protect frequency range and do not need to cover unnecessary centre; antenna volume can reduce greatly, is convenient to antenna and the body shell structure better merges design.
Above disclosed only is a kind of preferred embodiment of the utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (4)
1. an antenna is characterized in that, comprising: up emission sub antenna, descending reception sub antenna, up power amplifier, descending LNA circuit and modulator-demodulator;
Described up power amplifier one end links to each other with described up emission sub antenna, and the other end links to each other with described modulator-demodulator;
Described descending LNA circuit one end links to each other with described descending reception sub antenna, and the other end links to each other with described adjustment demodulator.
2. antenna as claimed in claim 1 is characterized in that:
Described up emission sub antenna covers the uplink band of duplex band;
Described descending reception sub antenna covers the band downlink of duplex band.
3. antenna as claimed in claim 1 or 2 is characterized in that, described modulator-demodulator is GSM signal modem or CDMA signal modem.
4. a portable terminal is characterized in that, comprises each described antenna at least one cover claim 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201236856U CN201663236U (en) | 2010-02-26 | 2010-02-26 | Antenna and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201236856U CN201663236U (en) | 2010-02-26 | 2010-02-26 | Antenna and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663236U true CN201663236U (en) | 2010-12-01 |
Family
ID=43233657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201236856U Expired - Lifetime CN201663236U (en) | 2010-02-26 | 2010-02-26 | Antenna and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103874076A (en) * | 2014-03-26 | 2014-06-18 | 华为技术有限公司 | Base station |
| US10038246B2 (en) | 2014-03-26 | 2018-07-31 | Huawei Technologies Co., Ltd | Base station |
-
2010
- 2010-02-26 CN CN2010201236856U patent/CN201663236U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103874076A (en) * | 2014-03-26 | 2014-06-18 | 华为技术有限公司 | Base station |
| US10038246B2 (en) | 2014-03-26 | 2018-07-31 | Huawei Technologies Co., Ltd | Base station |
| US10498039B2 (en) | 2014-03-26 | 2019-12-03 | Huawei Technologies Co., Ltd. | Base station |
| US11258179B2 (en) | 2014-03-26 | 2022-02-22 | Huawei Technologies Co., Ltd. | Base station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |