CN102013552A - Wireless communication terminal and antenna design method thereof - Google Patents
Wireless communication terminal and antenna design method thereof Download PDFInfo
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- CN102013552A CN102013552A CN2010102958905A CN201010295890A CN102013552A CN 102013552 A CN102013552 A CN 102013552A CN 2010102958905 A CN2010102958905 A CN 2010102958905A CN 201010295890 A CN201010295890 A CN 201010295890A CN 102013552 A CN102013552 A CN 102013552A
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Abstract
The invention discloses a wireless communication terminal and an antenna design method thereof. The wireless communication terminal comprises an antenna and a circuit board, wherein the antenna comprises a lead which is directly led out from an antenna feed point of the circuit board and fixed in a groove on an antenna bracket or at the inner side of the shell. The antenna design method comprises the following steps of: calculating the wavelength of a wireless signal according to the frequency of the wireless signal; calculating the length interval of the antenna according to the wavelength; debugging the length of the antenna by using a network analyzer; and confirming the fixed position of the antenna which is suspended above the circuit board, keeps a far distance from the circuit board and is far from other metal devices. The wireless communication terminal antenna and the design method thereof, which are provided by the invention, can decrease the cost and shorten the development cycle.
Description
Technical field
The invention belongs to the wireless communication technique field, relate to a kind of antenna, relate in particular to a kind of antenna of wireless communication terminal; Simultaneously, the invention still further relates to a kind of method for designing of wireless communication terminal antenna.
Background technology
The development of communication industry is maked rapid progress, and particularly everybody exclaims the development speed of mobile communication for it especially.GSM mobile handset from the mobile telephone of analogue technique to digital technology, 3G in full swing till now again, the time of 30 or 40 years has just been used in this evolution only.
The communication technology is the transmission and the reception of information after all.For the process of radio communication, information is to amplify after modulated, is that carrier is launched with the electromagnetic wave by antenna; Also be to receive the electromagnetic wave that comprises information during reception, demodulate useful signal then by antenna.In this process, antenna is undoubtedly very important in a radio communication link.Nowadays antenna has entered a lot of aspects of life, systems such as mobile phone, broadcasting, TV, radar, navigation, electronic countermeasures, remote sensing, radio astronomy, and every electromagnetic wave that utilizes transmits information, all relies on antenna to carry out work.
When electric current flows through lead, just irradiation of electromagnetic waves can take place, the ability of radiation is relevant with the length of lead and shape.The basic principle of Here it is aerial radiation.
Mobile phone is everybody the most familiar communication product, so be example with the mobile phone just, the realization of wireless communication terminal plain antenna scheme once is described.The function of some meeting integrated with Bluetooth of present mobile phone and WIFI, and bluetooth and WIFI also need own independent antenna to realize the transmitting-receiving of data.Present antenna for mobile phone substantially all is built-in, is contracted out to antenna research and development company and designs, and adopts the material of metal clips or FPC to be made on the antenna holder of mobile phone inside, perhaps the inboard of casing; Bluetooth and WIFI antenna also be so mostly, also can adopt the ceramic paster antenna.This antenna cost can increase the R﹠D cycle of project than higher and the cycle is long.
Summary of the invention
Technical problem to be solved by this invention is: a kind of antenna of wireless communication terminal is provided, can reduces cost, shorten the R﹠D cycle.
In addition, the present invention further provides a kind of method for designing of wireless communication terminal antenna, can reduce cost, shorten the R﹠D cycle.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of wireless communication terminal, described wireless communication terminal comprises antenna, circuit board; Described antenna comprises a lead, and described lead is directly drawn from the antenna feed point of circuit board, is fixed in the groove on the antenna holder or the inboard of casing.
As a preferred embodiment of the present invention, calculate the wavelength of wireless signal according to the frequency meter of wireless signal, calculate the length of interval of antenna again according to wavemeter.
As a preferred embodiment of the present invention, the length of using network analyzer to debug out antenna.
As a preferred embodiment of the present invention, determine the antenna fixed position, antenna is suspended in the circuit board top, keeps remote with circuit board, simultaneously also away from other metal devices.
As a preferred embodiment of the present invention, described antenna is a lead, and described lead is directly drawn from the antenna feed point of circuit board, is fixed in the groove on the antenna holder or the inboard of casing.
A kind of method for designing of above-mentioned wireless communication terminal antenna is calculated the wavelength of wireless signal according to the frequency meter of wireless signal, calculates the length of interval of antenna again according to wavemeter.
As a preferred embodiment of the present invention, the length of using network analyzer to debug out antenna; Determine the antenna fixed position then, antenna is suspended in the circuit board top, keeps remote with circuit board, simultaneously also away from other metal devices.
Beneficial effect of the present invention is: wireless communication terminal antenna and method for designing thereof that the present invention proposes, can reduce cost, and shorten the R﹠D cycle.
The difference that the performance of antenna of the present invention and Antenna Design company do is also little, adds the debugging of antenna match, and performance is just easier to reach requirement.Simultaneously, the present invention only need use a plain conductor, and price is very low, can ignore in the project total cost.In addition, spended time of the present invention is very short, has saved the very long Antenna Design die sinking time (common antenna debug time is 1-7 days, die sinking 7 days).
Description of drawings
Fig. 1 is the structural representation of wireless communication terminal of the present invention and antenna thereof.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
The performance of antenna for mobile phone is mainly decided by length, forms of radiation and surrounding environment.Length is decided by electromagnetic wavelength, and forms of radiation determines that by antenna environment the environment aspect mainly is meant the metal objects of not wanting influential aerial radiation.
If the antenna environment of mobile phone is fine, device such as motor, fpc, mic and lead thereof are away from antenna end as can be known by above 3, and near the casing the antenna does not have metal material yet, just is easy to design high performance antenna so in theory.Can adopt easy antenna form---single wire in this case.
See also Fig. 1, the wireless communication terminal that the present invention discloses, described wireless communication terminal comprises antenna, circuit board; Described antenna comprises a lead 40, and wire antenna 40 directly extracts from the antenna feed point 30 of circuit board 10, is fixed in the groove on the antenna holder 20 or the inboard of casing.
Calculate its wavelength according to the frequency meter of wireless signal, calculate general antenna length (antenna for mobile phone is the antenna that adopts 1/4 wavelength usually) according to wavemeter again; Perhaps use network analyzer debug out performance better, meticulousr antenna length.Choose the antenna fixed position then, antenna is suspended in the circuit board top, keeps trying one's best distance far away with circuit board, simultaneously also as far as possible away from other metal devices.
For mobile phone, the frequency ratio of bluetooth and WIFI is higher, and the length of antenna is shorter, and easier placement also just is easy to realize.And the desired length of GSM antenna is longer, to such an extent as to mobile phone GSM antenna and be not easy to adopt this easy form mostly the time.
Preferably, for guaranteed performance, the plain antenna of wire form is more suitable for adopting when antenna environment is better.In addition, the present invention is applicable to all antennas in theory, but owing to limit by antenna length and placement space, the antenna that frequency is low is very not suitable, and not as FM and TV, the antenna that frequency is low more is long more, is not easy more to place; And the high more antenna length of frequency is short more, easy more placement, also just easy more realization.
In sum, wireless communication terminal antenna and method for designing thereof that the present invention proposes can reduce cost, and shorten the R﹠D cycle.
The difference that the performance of antenna of the present invention and Antenna Design company do is also little, adds the debugging of antenna match, and performance is just easier to reach requirement.
Simultaneously, the present invention only need use a plain conductor, and price is very low, can ignore in the project total cost.
In addition, spended time of the present invention is very short, has saved the very long Antenna Design die sinking time (common antenna debug time is 1-7 days, die sinking 7 days).
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or substantive characteristics, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (7)
1. a wireless communication terminal is characterized in that, described wireless communication terminal comprises antenna, circuit board;
Described antenna comprises a lead, and described lead is directly drawn from the antenna feed point of circuit board, is fixed in the groove on the antenna holder or the inboard of casing.
2. wireless communication terminal according to claim 1 is characterized in that:
Calculate the wavelength of wireless signal according to the frequency meter of wireless signal, calculate the length of interval of antenna again according to wavemeter.
3. wireless communication terminal according to claim 2 is characterized in that:
The length of using network analyzer to debug out antenna.
4. wireless communication terminal according to claim 3 is characterized in that:
Determine the antenna fixed position, antenna is suspended in the circuit board top, keeps remote with circuit board, simultaneously also away from other metal devices.
5. wireless communication terminal according to claim 1 is characterized in that:
Described antenna is a lead, and described lead is directly drawn from the antenna feed point of circuit board, is fixed in the groove on the antenna holder or the inboard of casing.
6. the antenna design method of the described wireless communication terminal of one of claim 1 to 5 is characterized in that:
Calculate the wavelength of wireless signal according to the frequency meter of wireless signal, calculate the length of interval of antenna again according to wavemeter.
7. the antenna design method of wireless communication terminal according to claim 5 is characterized in that:
The length of using network analyzer to debug out antenna;
Determine the antenna fixed position then, antenna is suspended in the circuit board top, keeps remote with circuit board, away from metal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102958905A CN102013552A (en) | 2010-09-29 | 2010-09-29 | Wireless communication terminal and antenna design method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102958905A CN102013552A (en) | 2010-09-29 | 2010-09-29 | Wireless communication terminal and antenna design method thereof |
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| Publication Number | Publication Date |
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| CN102013552A true CN102013552A (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102958905A Pending CN102013552A (en) | 2010-09-29 | 2010-09-29 | Wireless communication terminal and antenna design method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101410A (en) * | 2019-05-09 | 2019-08-09 | 企晟(上海)医疗器械有限公司 | A kind of wireless antenna layout method for hand-held ultrasound equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514511A (en) * | 2002-12-31 | 2004-07-21 | �ƶ��������LK����˾ | Antenna used on folding radio equipment |
| CN1519978A (en) * | 2002-12-16 | 2004-08-11 | �ƶ��������LK����˾ | Antenna for flat radio device |
| WO2007066552A1 (en) * | 2005-12-07 | 2007-06-14 | Murata Manufacturing Co., Ltd. | Card device |
-
2010
- 2010-09-29 CN CN2010102958905A patent/CN102013552A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519978A (en) * | 2002-12-16 | 2004-08-11 | �ƶ��������LK����˾ | Antenna for flat radio device |
| CN1514511A (en) * | 2002-12-31 | 2004-07-21 | �ƶ��������LK����˾ | Antenna used on folding radio equipment |
| WO2007066552A1 (en) * | 2005-12-07 | 2007-06-14 | Murata Manufacturing Co., Ltd. | Card device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101410A (en) * | 2019-05-09 | 2019-08-09 | 企晟(上海)医疗器械有限公司 | A kind of wireless antenna layout method for hand-held ultrasound equipment |
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Application publication date: 20110413 |