CN2872626Y - Single-frequency and double-oscillator planar reversed F-shaped antenna - Google Patents
Single-frequency and double-oscillator planar reversed F-shaped antenna Download PDFInfo
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- CN2872626Y CN2872626Y CN 200620068263 CN200620068263U CN2872626Y CN 2872626 Y CN2872626 Y CN 2872626Y CN 200620068263 CN200620068263 CN 200620068263 CN 200620068263 U CN200620068263 U CN 200620068263U CN 2872626 Y CN2872626 Y CN 2872626Y
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Abstract
A double vibration generators single band plane reverse F-shaped antenna can be used in IEEE802.11b band to solve the problems of prior art such as narrow band and high signal loss. The antenna comprises a first and a second vibration generator, a base plate, and two connecting parts connecting the first and the second radiation parts with the base plate respectively. The first and the second radiation parts are arranged at the same side of the base plate and are in parallel with the base plate. The first and the second generators form a certain gap with the base plate respectively to achieve resonant frequency magnetic field and length of the two vibration generators are correspondent with wavelength ratio of 2.4 GHz and 2.5 GHz respectively. By controlling frequency of two closed radiation centers, band width can be increased effectively.
Description
[technical field]
The utility model relates to a kind of planar inverted F-shape antenna, and is particularly related to two oscillator single-frequency planar inverted F-shape antennas of a kind of IEEE802.11b of being applied to.
[background technology]
Along with the extensive use of WLAN (WLAN (wireless local area network)) at modern mobile office environment, the antenna that is installed on the portable communication apparatus is able to a large amount of uses, and the main flow wireless LAN communication agreement of Chan Shenging mainly comprises IEEE802.11b and two kinds of standards of 802.11a thereupon, wherein the working frequency range of 802.11b is mainly 2.4-2.5GHz, and the working frequency range of 802.11a is contained 5.15-5.35GHz.
Planar inverted F-shape antenna (Planar Inverted-F Antenna, PIFA) be a kind of miniaturization built-in aerial that is applicable to mobile terminals commonly used, yet the structure of planar inverted F-shape antenna, kind is a lot, the previous single-frequency planar inverted F-shape antenna that uses all is the mode that adopts simple oscialltor control radiation frequency, be illustrated in figure 1 as the schematic diagram of the simple oscialltor single-frequency planar inverted F-shape antenna of a kind of IEEE802.11b of being applied to, this antenna comprises antenna body and feeder line 120, wherein said antenna body comprises an oscillator 70 and a substrate 60 and the connecting portion 55 that is connected above-mentioned oscillator 70 and substrate 60, above-mentioned oscillator 70 and substrate 60 are in portion's Different Plane, and the two plane parallel of living in, and the length of oscillator 70 is corresponding to the wavelength ratio of characteristic frequency in the IEEE802.11b frequency range.
Yet, as shown in Figure 2, above-mentioned single-frequency planar inverted F-shape antenna adopts the mode of simple oscialltor control radiation frequency, in control radiation center frequency is 2.45GHz, then the frequency band of voltage standing wave ratio VSWR＜2 is about 2.35-2.55GHz, so the bandwidth that simple oscialltor can reach is about about 200MHz, above-mentioned as can be seen single-frequency planar inverted F-shape antenna bandwidth of operation is narrow, makes the probability of dropout bigger.
Be with, real provide in a kind of IEEE802.11b of being applied to frequency range by necessity, simple in structure and the planar inverted F-shape antenna of big bandwidth is arranged so that the dropout probability obviously reduces.
[summary of the invention]
Therefore, the purpose of this utility model just provides the planar inverted F-shape antenna in a kind of IEEE802.11b of being applied to frequency range, and this planar inverted F-shape antenna is simple in structure and bigger bandwidth arranged.
For achieving the above object, the utility model provides a kind of pair of oscillator single-frequency planar inverted F-shape antenna, this antenna comprises first, second oscillator, substrate, and connect above-mentioned first, the connecting portion of second oscillator and substrate, first, second oscillator is in the same plane of substrate homonymy, and first, second oscillator and substrate form the stereochemical structure that is parallel to each other in twos, first, second oscillator all forms certain slit and forms resonance frequency magnetic field with substrate, above-mentioned first, second oscillator is controlled 2.4GHz and these two close radiation center frequencies of 2.5GHz respectively, and described first, the length of second oscillator corresponds respectively to the wavelength ratio of 2.4GHz and these two characteristic frequency of 2.5GHz, above-mentioned antenna utilizes two close radiation center frequencies of two oscillator control, obtain two bandwidth of operation that partially overlap, bandwidth is being shown increase, the dropout probability obviously reduces.
Particularly, described pair of oscillator single-frequency planar inverted F-shape antenna also comprises a feeder line, this feeder line has internal core wire and screen, wherein a wherein end of above-mentioned internal core wire is electrically connected on above-mentioned first oscillator and the oscillator of second oscillator than weak point, and a wherein end of above-mentioned screen is electrically connected at aforesaid substrate.
Compared with prior art, the utility model provides a kind of plane inverse F type single-band antenna that big bandwidth is arranged, moreover, the advantage that the utility model is simple in structure, easy to manufacture.
For making structural feature of the present utility model and function thereof there are further understanding, cooperate diagram to be described in detail as follows now:
[description of drawings]
Fig. 1 is the three-dimensional structure diagram of existing single-frequency planar inverted F-shape antenna.
Fig. 2 is that the voltage standing wave ratio performance of existing single-frequency planar inverted F-shape antenna working frequency range when being 2.45GHz measures curve.
Fig. 3 is a three-dimensional structure diagram of the present utility model.
Fig. 4 is that the voltage standing wave ratio performance of the utility model in the IEEE802.11b frequency range measures curve.
[embodiment]
See also shown in Figure 3ly, be three-dimensional structure diagram of the present utility model.This plane inverse F type single-band antenna comprises first oscillator 44, second oscillator 50, substrate 30, and is connected in the connecting portion 31 between above-mentioned first oscillator 44, second oscillator 50 and the aforesaid substrate 30.Wherein, first oscillator 44 and second oscillator 50 lay respectively in the same plane of substrate 30 the same sides, and first oscillator 44, second oscillator 50 and substrate 30 threes form the stereochemical structure that is parallel to each other in twos, first oscillator 44, second oscillator 50 all form certain slit and form resonance frequency magnetic field with substrate 30, simultaneously, this first oscillator 44, second oscillator 50 and substrate 30 threes are connected in one by above-mentioned connecting portion 31.
And above-mentioned first oscillator 44 and second oscillator 50 are a long strip type sheet metal, and the length of first oscillator 44 and second oscillator 50 corresponds respectively to the wavelength ratio that centre frequency is 2.4GHz and these two close characteristic frequency of 2.5GHz.
In addition, antenna of the present utility model also comprises a feeder line 120, and this feeder line 120 is generally coaxial cable, comprises internal core wire 310 and screen 200.And between this internal core wire 310 and the screen 200, and between this screen 200 and the external world around it, include an insulating medium layer 100.And an end of this screen 200 is electrically connected on the aforesaid substrate 30, and the other end of this screen 200 and the grounding assembly on the communication terminal electrically connect; One end of above-mentioned internal core wire 310 is electrically connected on above-mentioned second oscillator 50, and the microwave receiving on the other end of above-mentioned internal core wire 310 and the communication terminal/sending assembly electrically connects.
See also shown in Figure 4, for the voltage standing wave ratio performance of the utility model in the IEEE802.11b frequency range measures curve, because the utility model adopts two close radiation center frequencies of two oscillator control, first oscillator, 44 control radiation center frequencies are 2.4GHz, then the frequency band of voltage standing wave ratio＜2 is about 2.3-2.5GHz, second oscillator, 50 control radiation center frequencies are 2.5GHz, then the frequency band of voltage standing wave ratio＜2 is about 2.4-2.6GHz, obtain two partially overlap bandwidth of operation, two bandwidth of operation additions frequency band of obtaining voltage standing wave ratio＜2 is about 2.3-2.6GHz as seen from Figure 4, be that the bandwidth of working after the addition increases for the 300MHz. bandwidth is showing, the dropout probability also can increase and significantly reduce with showing of bandwidth.
Two oscillator single frequency panel inverted F-shape antennas that the utility model provides compared with prior art have following good effect:
1. because the utility model utilizes two close radiation center frequencies of two oscillator control, obtain two The bandwidth of operation that partially overlaps is showing its bandwidth and increases, and the dropout probability obviously reduces.
2. the utility model advantage simple in structure, easy to manufacture in addition.
Claims (4)
1, a kind of pair of oscillator single-frequency planar inverted F-shape antenna, this planar inverted F-shape antenna is applied to the IEEE802.11b frequency range, it is characterized in that: the connecting portion that this antenna comprises first, second oscillator, substrate and connects above-mentioned first, second oscillator and substrate, first, second oscillator is in the same plane of homonymy of substrate, and first, second oscillator and substrate three form the stereochemical structure that is parallel to each other in twos, and first, second oscillator all forms certain slit and forms resonance frequency magnetic field with substrate.
2, planar inverted F-shape antenna as claimed in claim 1 is characterized in that: the length of above-mentioned first oscillator and second oscillator corresponds respectively to the wavelength ratio of centre frequency 2.4GHz and these two close characteristic frequency of 2.5GHz.
3, planar inverted F-shape antenna as claimed in claim 1 is characterized in that: described pair of oscillator single-frequency planar inverted F-shape antenna also comprises a feeder line.
4, planar inverted F-shape antenna as claimed in claim 3 is characterized in that: described feeder line has internal core wire and screen, and wherein an end of above-mentioned internal core wire is connected on above-mentioned second oscillator, and a wherein end of above-mentioned screen is electrically connected at aforesaid substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068263 CN2872626Y (en) | 2006-01-05 | 2006-01-05 | Single-frequency and double-oscillator planar reversed F-shaped antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068263 CN2872626Y (en) | 2006-01-05 | 2006-01-05 | Single-frequency and double-oscillator planar reversed F-shaped antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2872626Y true CN2872626Y (en) | 2007-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620068263 Expired - Fee Related CN2872626Y (en) | 2006-01-05 | 2006-01-05 | Single-frequency and double-oscillator planar reversed F-shaped antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2872626Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635242A (en) * | 2019-09-30 | 2019-12-31 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
-
2006
- 2006-01-05 CN CN 200620068263 patent/CN2872626Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635242A (en) * | 2019-09-30 | 2019-12-31 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| US11901625B2 (en) | 2019-09-30 | 2024-02-13 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Antenna apparatus and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |