CN102403568A - Frequency band-switchable antenna device - Google Patents
Frequency band-switchable antenna device Download PDFInfo
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- CN102403568A CN102403568A CN2010102843780A CN201010284378A CN102403568A CN 102403568 A CN102403568 A CN 102403568A CN 2010102843780 A CN2010102843780 A CN 2010102843780A CN 201010284378 A CN201010284378 A CN 201010284378A CN 102403568 A CN102403568 A CN 102403568A
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- switch
- band
- antenna assembly
- frequency band
- earth terminal
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Abstract
The invention provides a frequency band-switchable antenna device which is arranged on a circuit board. The frequency band-switchable antenna device comprises a radiation part, a feed-in end, a first grounding end and a second grounding end, wherein the radiation part is provided with a first section part, a bending part and a second section part; the bending part is connected with the first section part and the second section part; the feed-in end is arranged on the first section part and is electrically connected with the radiation part and the circuit board; the first grounding end is adjacently arranged with the feed-in end; the second grounding end is arranged between the first grounding end and the bending part; and a radio-frequency switch of the circuit board is selectively and electrically connected with one of the first grounding end and the second grounding end to respectively realize the reception and the transmission of wireless signals of a first frequency band and a second frequency band. The invention has the beneficial effect that under the condition of not increasing the volume and the dimension of the antenna, the bandwidth of the antenna device can be increased; and the antenna device has better antenna efficiency and lower power consumption.
Description
Technical field
The present invention relates to a kind of antenna assembly, relate in particular to a kind of antenna assembly that is used in the switch-able band of radio communication device.
Background technology
In recent years,, make that for example the portable radio communication device of this type such as mobile phone or personal digital assistant becomes the necessity that people live, more brought up living environment easily because wireless communication industry is flourish.Yet in the portable radio communication device of this type, antenna assembly is being played the part of the key player who transmits with the reception wireless signal, so the operating characteristic of antenna assembly has directly influenced the wireless signal transmitting-receiving ability and the quality of radio communication device.
The antenna assembly of general portable radio communication device can be divided into exposed and concealed two kinds haply.Common exposed antenna assembly is helical antenna device (Helical Antenna), the concealed antenna device in present application then with the inverted F type plane antenna device (Planar Inverted-F Antenna, PIFA) comparatively general.The helical antenna device be owing to need expose on the shell of radio communication device, therefore is easier to impairedly, influences communication quality.The inverted F type plane antenna device because have simple structure, volume is little and easy and advantages such as circuit combines, be applied in large quantities in the various radio communication device at present.
Usually, one is designed good antenna assembly except the lower loss of turning back (return loss) will be arranged, and operation frequency range (bandwidth) also is an epochmaking ring.In order to make the user of radio communication device can be more convenient and receive wireless signal clearly; Can can't not communicate by letter because of the wireless communication system merchant adopts the various signals transmission band, present radio communication device many through increase antenna assembly quantity or volume make radio communication device can be in bigger frequency range or multiband the transmitting/receiving wireless signal.Yet, the element integration day by day improve and the trend of radio communication device miniaturization day by day under, traditional mode can't meet demand.
In order in limited accommodation space, to increase frequency range that antenna assembly can the transmitting/receiving wireless signal, to promote signal transmitting and receiving quality and efficient, manyly at present realize with the modes that change antenna device arrangement.See also Fig. 1, it is the structural representation of traditional antenna device.As shown in Figure 1; Traditional antenna device 1 is made up of the inverted F type plane antenna device; And this antenna assembly 1 has Department of Radiation 11, feed side 12 (feeding point) and earth terminal 13 structures such as (ground); Wherein Department of Radiation 11 has first section 11a of portion, kink 11b and second section 11c of portion, and first section 11a of portion is provided with parallel substantially mode with second section 11c of portion, and connects first section 11a of portion and second section 11c of portion by kink 11b; And perpendicular to first section 11a of portion and second section 11c of portion, promptly Department of Radiation 11 is "] to kink 11b substantially substantially " font.
And feed side 12 and earth terminal 13 are arranged at the end of first section 11a of portion, and earth terminal 13 is arranged between feed side 12 and the kink 11b.Feed side 12 can be fed into antenna assembly 1 with the radiofrequency signal of radio circuit (not shown) desire emission; Certainly; Also can export radio circuit (not shown) to by the radiofrequency signal that antenna assembly 1 is sensed in feed side 12; Can in lower band, form resonance mode whereby, for example transmitting/receiving wireless signal in the frequency band of global system for mobile communications 850 (GSM850) 824～894MHz with the transmitting/receiving wireless signal.
Yet low-frequency band communication environment now more comprise global system for mobile communications 900 (GSM900), and its frequency band is about 880～960MHz except global system for mobile communications 850 (GSM850).Because traditional antenna device 1 is only applicable to single band, can't increase frequency band significantly and make it can be applicable to global system for mobile communications 850 (GSM850) and global system for mobile communications 900 (GSM900) simultaneously.
Therefore, how to develop and a kind ofly improve above-mentioned known technology and lack, and applicable to the antenna assembly of the switch-able band of different low-frequency band communication systems, real problem for the correlative technology field solution that presses at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of antenna assembly of many switch-able bands; Through RF switch optionally be connected in first earth terminal and second earth terminal one of them; To increase the frequency range of antenna assembly, make it go for global system for mobile communications 900 (GSM900) and global system for mobile communications 850 (GSM850).
Another object of the present invention is to provide a kind of antenna assembly of switch-able band; Can be under the condition that does not increase antenna assembly volume and size; Increase the frequency range of antenna assembly, and make this antenna assembly have preferable antenna efficiency (antenna efficiency), lower power consumption.
For reaching above-mentioned purpose; A preferred embodiments of the present invention is the antenna assembly that a kind of switch-able band is provided; Be arranged on the circuit substrate; The antenna assembly of this switch-able band comprises: Department of Radiation, have first section portion, kink and second section portion, and kink is connected in first section portion and second section portion; The feed side is arranged in first section portion, is electrically connected at Department of Radiation and circuit substrate; First earth terminal is adjacent to the feed side; And second earth terminal, be arranged between first earth terminal and the kink; Wherein, a RF switch of circuit substrate optionally be electrically connected at first earth terminal and second earth terminal one of them, so as to realizing the wireless signal transmitting-receiving of first frequency band and second frequency band respectively.
The present invention through RF switch optionally be connected in first earth terminal and second earth terminal one of them, to increase the frequency range of antenna assembly, make it can be applicable to global system for mobile communications 850 and global system for mobile communications 900 simultaneously.On the other hand, the antenna assembly of switch-able band of the present invention can increase the frequency range of antenna assembly, and make this antenna assembly have preferable antenna performance, lower power consumption under the condition that does not increase antenna assembly volume and size.
Description of drawings
Fig. 1 is the structural representation of traditional antenna device.
Fig. 2 is the structural representation of the antenna assembly of the switch-able band of preferred embodiment of the present invention.
Fig. 3 is arranged at the structural representation of circuit substrate for the antenna assembly of the switch-able band of preferred embodiment of the present invention.
Fig. 4 is the microwave radiation figure of the corresponding frequency band of antenna assembly of demonstration switch-able band of the present invention shown in Figure 2.
Description of reference numerals in the above-mentioned accompanying drawing is following:
1: antenna assembly 11: Department of Radiation
11a: first section 11b of portion: kink
11c: second section portion 12: feed side
13: earth terminal 2: the antenna assembly of switch-able band
21: Department of Radiation 21a: first section portion
21b: kink 21c: second section portion
21d: first end 21e: the second end
22: 23: the first earth terminals in feed side
Earth terminal 25 in 24: the second: circuit substrate
250: carrier 26: RF switch
Embodiment
Some exemplary embodiments that embody characteristic of the present invention and advantage will be described in detail in the explanation of back segment.Be understood that the present invention can have various variations on different modes, it does not depart from the scope of the present invention, and explanation wherein and accompanying drawing be used as the usefulness of explanation in itself, but not in order to restriction the present invention.
See also Fig. 2, it is the structural representation of the antenna assembly of the switch-able band of preferred embodiment of the present invention.As shown in the figure; The antenna assembly 2 of switch-able band of the present invention is made up of the inverted F type plane antenna device, and the antenna assembly 2 of this switch-able band is arranged on the carrier 250 (as shown in Figure 3) of circuit substrate 25 (as shown in Figure 3) of a radio communication device (not shown).In some embodiment, radio communication device is mobile phone, PDA(Personal Digital Assistant), blue-tooth device, GPS (GPS) or portable computer etc., but not as limit.
In present embodiment; The antenna assembly 2 of switch-able band of the present invention has structures such as Department of Radiation 21, feed side 22, first earth terminal 23 and second earth terminal 24; Wherein, Department of Radiation 21 has first section 21a of portion, kink 21b and second section 21c of portion, and first section 21a of portion of Department of Radiation 21, kink 21b and second section 21c of portion width is identical in fact, and first section 21a of portion is provided with parallel in fact mode with second section 21c of portion.In some embodiment, the length of first section 21a of portion is long than second section 21c of portion in fact, but not as limit.Kink 21b is connected in first section 21a of portion and second section 21c of portion, and kink 21b is in fact perpendicular to first section 21a of portion and second section 21c of portion, so that Department of Radiation 21 forms "] substantially " structure of font.
Please consult Fig. 2 again, as shown in the figure, feed side 22, first earth terminal 23 and second earth terminal 24 all are arranged on first section 21a of portion of Department of Radiation 21, and feed side 22 is connected with the first end 21d of first section 21a of portion.First earth terminal 23 is adjacent to feed side 22, and is arranged between the feed side 22 and second earth terminal 24.24 of second earth terminals are arranged between the kink 21b of first earth terminal 23 and Department of Radiation 21.
See also Fig. 3, its antenna assembly for the switch-able band of preferred embodiment of the present invention is arranged at the structural representation of circuit substrate.As shown in the figure, when the antenna assembly 2 of switch-able band is arranged at 25 last times of circuit substrate, it is arranged on the terminal carrier 250 of circuit substrate 25, and feed side 22 electrically connects with Department of Radiation 21 and circuit substrate 25; As for first earth terminal 23 and second earth terminal 24, the one of which end electrically connects with Department of Radiation 21 respectively, the other end then optionally with circuit substrate 25 on RF switch 26 (as shown in Figure 2) electrically connect.This RF switch 26 can pass through manually or the mode that automaticallyes switch the selectivity and first earth terminal 23 or 24 one of them electric connection of second earth terminal through the radio circuit (not shown) of circuit substrate 25.Whereby; Feed side 22 can be fed into the radiofrequency signal of the radio circuit on the circuit substrate 25 (not shown) desire emission the antenna assembly 2 of switch-able band; Follow first section 21a of portion, kink 21b, second section 21c of portion, to the second end 21e of second section 21c of portion; Again by the second end 21e return second section 21c of portion, kink 21b, first section 21a of portion, to first earth terminal 23 or second earth terminal 24 one of them low frequency mould band resonance current path and be electrically connected to circuit substrate 25; Thereby, when RF switch 26 selectivity and first earth terminal 23 or 24 one of them electric connection of second earth terminal, the radiofrequency signal that then can select to receive and dispatch different frequency bands.
See also Fig. 4; It shows the microwave radiation figure of the corresponding frequency band of multiband antenna apparatus of the present invention shown in Figure 2; As shown in the figure, when RF switch 26 (as shown in Figure 2) electrically connected with first earth terminal 23, then Department of Radiation 21 frameworks were in providing one than long resonance current path; Can in first frequency band, form the radiofrequency signal of resonance mode whereby, 824～894MHz, first frequency band shown in figure with first frequency band of transmitting-receiving low-frequency band.And when RF switch 26 and 24 electric connections of second earth terminal; Then Department of Radiation 21 frameworks are in providing one than short resonance current path; Can in second frequency band, form the radiofrequency signal of resonance mode whereby with second frequency band of transmitting-receiving low-frequency band; 880～960 second frequency bands shown in figure; In present embodiment, first frequency band of low-frequency band comprises global system for mobile communications 850 (GSM850) 824～894MHz, and second frequency band of low-frequency band then comprises the frequency band of global system for mobile communications 900 (GSM900) 880～960MHz.Thus; The antenna assembly 2 of switch-able band of the present invention only needs to select through RF switch 26 automatic or manuals that one of them electrically connects with first earth terminal 23 or second earth terminal 24; Then can select to switch first frequency band of reception global system for mobile communications 850 (GSM850) or second frequency band of global system for mobile communications 900 (GSM900), make the antenna assembly 2 of switch-able band of the present invention can select to switch to different frequency ranges in the low-frequency band zone.
In addition; The volume of the antenna assembly 2 of switch-able band of the present invention is identical in fact with size and traditional antenna device 1; Therefore can not increase volume and size and be unfavorable for the miniaturization of radio communication device; And first earth terminal 23 and second earth terminal 24 that the antenna assembly 2 of switch-able band of the present invention only need use a shared feed side 22 and two mutual neighbours to establish, so structure is quite simple.
In sum; The present invention provides a kind of antenna assembly of switch-able band; Through RF switch optionally be connected in first earth terminal and second earth terminal one of them; To increase the frequency range of antenna assembly, make it can be applicable to global system for mobile communications 850 (GSM850) and global system for mobile communications 900 (GSM900) simultaneously.On the other hand, the antenna assembly of switch-able band of the present invention can increase the frequency range of antenna assembly, and make this antenna assembly have preferable antenna performance (antenna efficiency), lower power consumption under the condition that does not increase antenna assembly volume and size.
The present invention must be appointed by those skilled in the art and executes that the craftsman thinks and be to modify as all, yet does not take off as attaching the scope of claim institute desire protection.
Claims (10)
1. the antenna assembly of a switch-able band is arranged on the circuit substrate, and the antenna assembly of this switch-able band comprises:
One Department of Radiation has one first section portion, a kink and one second section portion, and this kink is connected in this first section portion and this second section portion;
One feed side is arranged in this first section portion, is electrically connected at this Department of Radiation and this circuit substrate;
One first earth terminal is adjacent to this feed side; And
One second earth terminal is arranged between this first earth terminal and this kink;
Wherein, a RF switch of this circuit substrate optionally be electrically connected at this first earth terminal and this second earth terminal one of them, so as to realizing the wireless signal transmitting-receiving of one first frequency band and one second frequency band respectively.
2. the antenna assembly of switch-able band as claimed in claim 1, wherein this first frequency band comprises the frequency band of global system for mobile communications 850.
3. the antenna assembly of switch-able band as claimed in claim 1, wherein this second frequency band comprises the frequency band of global system for mobile communications 900.
4. the antenna assembly of switch-able band as claimed in claim 1, wherein this multiband antenna apparatus is disposed on the carrier of this circuit substrate.
5. the antenna assembly of switch-able band as claimed in claim 1, wherein this first section portion has a first end, and this feed side is connected with this first end.
6. the antenna assembly of switch-able band as claimed in claim 1, wherein this first section portion and second section portion laterally arrange in fact each other.
7. the antenna assembly of switch-able band as claimed in claim 1, wherein this kink is in fact perpendicular to this first section portion and this second section portion.
8. the antenna assembly of switch-able band as claimed in claim 1, wherein this first section portion, this kink and this second section portion width is identical in fact.
9. the antenna assembly of switch-able band as claimed in claim 1, wherein the antenna assembly of this switch-able band is applied to a radio communication device.
10. the antenna assembly of switch-able band as claimed in claim 9, wherein this radio communication device be mobile phone, personal digital assistant, blue-tooth device, GPS or portable computer at least one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102843780A CN102403568A (en) | 2010-09-10 | 2010-09-10 | Frequency band-switchable antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102843780A CN102403568A (en) | 2010-09-10 | 2010-09-10 | Frequency band-switchable antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102403568A true CN102403568A (en) | 2012-04-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102843780A Pending CN102403568A (en) | 2010-09-10 | 2010-09-10 | Frequency band-switchable antenna device |
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| Country | Link |
|---|---|
| CN (1) | CN102403568A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425872A (en) * | 2013-08-26 | 2015-03-18 | 联想(北京)有限公司 | Antenna and electronic equipment |
| US9634385B2 (en) | 2013-02-04 | 2017-04-25 | Huawei Device Co., Ltd. | Antenna apparatus and terminal device |
| CN107294545A (en) * | 2017-05-04 | 2017-10-24 | 努比亚技术有限公司 | A kind of method that terminal and working condition to terminal antenna are switched over |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254205A (en) * | 1998-09-30 | 2000-05-24 | 日本电气株式会社 | Inverse F antenna and radio communication system equipped with said antenna |
| US20070115130A1 (en) * | 2005-11-14 | 2007-05-24 | Ronald Eveland | Multi-dimensional, broadband track and trace sensor radio frequency identification device |
| CN101685903A (en) * | 2008-09-25 | 2010-03-31 | 华冠通讯(江苏)有限公司 | Multiband antenna device |
-
2010
- 2010-09-10 CN CN2010102843780A patent/CN102403568A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254205A (en) * | 1998-09-30 | 2000-05-24 | 日本电气株式会社 | Inverse F antenna and radio communication system equipped with said antenna |
| US20070115130A1 (en) * | 2005-11-14 | 2007-05-24 | Ronald Eveland | Multi-dimensional, broadband track and trace sensor radio frequency identification device |
| CN101685903A (en) * | 2008-09-25 | 2010-03-31 | 华冠通讯(江苏)有限公司 | Multiband antenna device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9634385B2 (en) | 2013-02-04 | 2017-04-25 | Huawei Device Co., Ltd. | Antenna apparatus and terminal device |
| CN104425872A (en) * | 2013-08-26 | 2015-03-18 | 联想(北京)有限公司 | Antenna and electronic equipment |
| CN107294545A (en) * | 2017-05-04 | 2017-10-24 | 努比亚技术有限公司 | A kind of method that terminal and working condition to terminal antenna are switched over |
| CN107294545B (en) * | 2017-05-04 | 2019-06-28 | 努比亚技术有限公司 | A kind of terminal and the method that the working condition of terminal antenna is switched over |
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Application publication date: 20120404 |