CN202423550U - High-definition image transmission based 5-array microstrip antenna - Google Patents
High-definition image transmission based 5-array microstrip antenna Download PDFInfo
- Publication number
- CN202423550U CN202423550U CN201120470917XU CN201120470917U CN202423550U CN 202423550 U CN202423550 U CN 202423550U CN 201120470917X U CN201120470917X U CN 201120470917XU CN 201120470917 U CN201120470917 U CN 201120470917U CN 202423550 U CN202423550 U CN 202423550U
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- China
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- antenna
- radiating element
- microstrip
- loading unit
- image transmission
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- Expired - Fee Related
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Abstract
The utility model relates to a high-definition image transmission based 5-array microstrip antenna. The high-definition image transmission based 5-array microstrip antenna comprises a microstrip plate, radiating units and loading units, wherein the radiating units which are connected in series through a 60 ohm microstrip are arranged at the front side of the microstrip plate in a rectangular manner; the loading units which are connected together with a grounding line are arranged at the backside of the microstrip plate also in a rectangular manner; and two ends of the microstrip antenna are provided with short circuit holes. The loading units which are structurally and completely complementary with the radiating units are designed on the grounding line, so that the antenna can continuously remove inductive or capacitive portion in a transmission circuit by adjusting projections of the loading units on the front side of the microstrip plate and gap size of the radiating units; and short circuit branches are designed at two ends of the array antenna, so that the antenna can suppress deterioration of electric performance caused by terminal end current reflection to improve efficiency of the antenna by adjusting distances from the short circuit branches to adjacent radiating units.
Description
Technical field
The utility model belongs to antenna technical field, relates to a kind of microstrip antenna, especially a kind of 5 array microstrip antennas based on high-definition image transmission usefulness.
Background technology
Along with security protection, the development of emergency commading system is carried out image transmission and has been become more and more important through wireless.Compare with wired mode, the maximum benefit of wireless image transmission is convenient, can arbitrarily move and does not receive the restriction in place.
The wireless image transmission has 2 kinds: analogue transmission and high-definition image transmission.Obviously, the high-definition image transmission has more market prospects, and its resolution is very high, can know each trickle place of seeing picture clearly.But, under the identical situation of antenna, carry out transmission range through the high definition mode and can shorten a lot, often less than passing through 1/4th of analog form transmission.Therefore, under the situation that does not shorten transmission range,, need more high efficiency antenna for the high definition pattern.
The utility model content
The purpose of the utility model is to overcome the shortcoming of above-mentioned prior art; A kind of microstrip antenna based on high-definition image transmission usefulness is provided; This antenna is through being designed with loading unit on earth connection; This loading unit is structurally complementary fully with radiating element, at the projection in little band plate front and the gap size of radiating element, constantly eliminates perception or capacitive part in the transmission circuit through the adjustment loading unit; Be designed with the short circuit minor matters at the two ends of array antenna, through regulating the short circuit minor matters apart from the distance between the contiguous radiating element, suppress the end current reflection to the deterioration of electrical property to improve the efficient of antenna.
The purpose of the utility model solves through following technical scheme:
This microstrip antenna based on high-definition image transmission usefulness comprises little band plate, radiating element and loading unit three parts; The front of said little band plate is a radiating element, is rectangle, and radiating element and radiating element are to be cascaded through 60 Ω microstrip lines, and the back side is loading unit, also is rectangle, and links together through earth connection; There is the short circuit hole at the two ends of said microstrip antenna.
Above-mentioned radiating element length is 0.4～0.6 times of the wavelength of centre frequency in medium, and width is 0.25～0.4 times of the wavelength of centre frequency in medium; Distance between radiating element and the radiating element is 0.6～0.8 times of the wavelength of centre frequency in medium.
Above-mentioned loading length is 0.3～0.5 times of the wavelength of centre frequency in medium, and width is 0.25～0.4 times of the wavelength of centre frequency in medium; Distance between loading unit and the loading unit is 0.6～0.8 times of the wavelength of centre frequency in medium, is to be cascaded through earth connection between loading unit and the loading unit; Loading unit and radiating element slit in vertical direction is 1.5～3mm.
Further, at the two ends up and down of above-mentioned every array antenna a short circuit hole is arranged, distance is 0.2～0.4 times of the wavelength of centre frequency in medium to the short circuit pitch-row from the middle part of contiguous radiating element.
The utility model utilizes the compensation technique of loading unit, simultaneously broadening standing-wave ratio and the directional diagram bandwidth of antenna, and under the identical situation of radiating element number, the gain of antenna will high 1dB about.
Description of drawings
Fig. 1 is that the utility model is an example with 6 radiating elements of every row, the general structure sketch map;
Fig. 2 is that the utility model is an example with 6 radiating elements of every row, the head-on radiation cell schematics;
Fig. 3 is that the utility model is an example with 5 loading units of every row, back side loading unit sketch map;
Fig. 4 is the utility model short circuit hole sketch map.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
The utility model is based on the microstrip antenna of high-definition image transmission usefulness, comprises little band plate 2, radiating element 3 and loading unit 4 three parts; The front of said little band plate is a radiating element, is rectangle, and radiating element and radiating element are to be cascaded through 60 Ω microstrip lines, and the back side is loading unit, also is rectangle, and links together through earth connection; There is short circuit hole 5 at the two ends of said microstrip antenna.
In the preferred embodiment of the utility model, as shown in Figure 1, little band plate 2 is provided with the series feed antenna 1 of five row, and the antenna of every row contains positive radiating element 3, the loading unit 4 and the short circuit hole 5 at the back side.As shown in Figure 2, the length of radiating element 3 that is arranged at the front of little band plate is 0.4～0.6 times of the wavelength of centre frequency in medium, and width is 0.25～0.4 times of the wavelength of centre frequency in medium.Distance between radiating element 3 and the radiating element 3 is 0.6～0.8 times of the wavelength of centre frequency in medium, is to be that the microstrip line 6 of 60 Ω is cascaded through characteristic impedance between radiating element 3 and the radiating element 3.As shown in Figure 3, loading unit 4 also is rectangle, and length is 0.3～0.5 times of the wavelength of centre frequency in medium, and width is 0.25～0.4 times of the wavelength of centre frequency in medium.Distance between loading unit and the loading unit is 0.6～0.8 times of the wavelength of centre frequency in medium, is to be cascaded through earth connection 7 between loading unit 4 and the loading unit 4.Loading unit 4 is 1.5mm～3mm at little band plate positive projection and the gap size between the radiating element 38.As shown in Figure 4, a short circuit hole joint 9 and 10 is arranged at the two ends up and down of the series feed antenna 1 of every row, short dot is 0.3～0.5 times of the wavelength of centre frequency in medium apart from the middle part of contiguous radiating element 3 apart from 11.
Claims (4)
1. 5 array microstrip antennas based on high-definition image transmission usefulness is characterized in that, comprise little band plate (2), radiating element (3) and loading unit (4) three parts; The front of said little band plate (2) is radiating element (3), is rectangle, and radiating element (3) is to be cascaded through 60 Ω microstrip lines with radiating element (3), and the back side is loading unit (4), also is rectangle, and links together through earth connection; There is short circuit hole (5) at the two ends of said microstrip antenna.
2. a kind of 5 array microstrip antennas according to claim 1 based on high-definition image transmission usefulness; It is characterized in that; Said radiating element length is 0.4～0.6 times of the wavelength of centre frequency in medium, and width is 0.25～0.4 times of the wavelength of centre frequency in medium; Distance between radiating element and the radiating element is 0.6～0.8 times of the wavelength of centre frequency in medium.
3. a kind of 5 array microstrip antennas according to claim 1 based on high-definition image transmission usefulness; It is characterized in that; Said loading length is 0.3～0.5 times of the wavelength of centre frequency in medium, and width is 0.25～0.4 times of the wavelength of centre frequency in medium; Distance between loading unit and the loading unit is 0.6～0.8 times of the wavelength of centre frequency in medium, is to be cascaded through earth connection between loading unit and the loading unit; Loading unit and radiating element slit in vertical direction is 1.5～3mm.
4. a kind of 5 array microstrip antennas according to claim 1 based on high-definition image transmission usefulness; It is characterized in that; At the two ends up and down of every array antenna a short circuit hole is arranged, distance is 0.2～0.4 times of the wavelength of centre frequency in medium to the short circuit pitch-row from the middle part of contiguous radiating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120470917XU CN202423550U (en) | 2011-11-23 | 2011-11-23 | High-definition image transmission based 5-array microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120470917XU CN202423550U (en) | 2011-11-23 | 2011-11-23 | High-definition image transmission based 5-array microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202423550U true CN202423550U (en) | 2012-09-05 |
Family
ID=46748279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120470917XU Expired - Fee Related CN202423550U (en) | 2011-11-23 | 2011-11-23 | High-definition image transmission based 5-array microstrip antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202423550U (en) |
-
2011
- 2011-11-23 CN CN201120470917XU patent/CN202423550U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20151123 |