Double-frequency broadband micro-strip antenna with inclined ladder type tuning arms and lug-shaped coupling circular rings for Big Dipper
A technology of microstrip antennas and inclined ladders, which is applied in the directions of antennas, slot antennas, antenna grounding devices, etc., can solve the problems of few successful examples of microstrip antennas, meet the requirements of integrated transceiver, realize matching impedance, and compact structure Effect
Active Publication Date: 2015-05-13
XIAMEN UNIV
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Problems solved by technology
[0006] Although in recent years, there have been many research results on microstrip antennas applied to satellite navigation systems, but they mainly focus on stacked coupling multi-frequency, single-layer multi-feed multi-frequency, narrow-band multi-frequency, etc. For single-layer single-feed multi-frequency and There are few successful examples of microstrip antennas with wide frequency bands
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[0027] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0028] see Figure 1~4, the embodiment of the present invention is provided with a dielectric substrate 2 , an upper surface good conductor layer 1 , and a lower surface good conductor layer 3 . The dielectric constant of the dielectric substrate 1 is 6.15, the length is 30 mm, the width is 30 mm, and the thickness is 1.27 mm. The good conductor layer 1 on the upper surface is a square patch with a side length of 30mm; a rectangular slit 14 is dug in the center of the square, the length of the rectangular slit is 3.5-4.5mm, and the width is 0.8-1.2mm; a feeder hole is dug on the center line of the square 15. The distance between the feed hole and the center of the square is 4.9mm; four trapezoidal wide grooves are dug on the outer edge of the square 11, the length of the bottom edge of the trapezoidal wide groove is 17.5-22.5mm, the height is 4.5-6.0mm...
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The invention discloses a double-frequency broadband micro-strip antenna with inclined ladder type tuning arms and lug-shaped coupling circular rings for Big Dipper and relates to double-frequency micro-strip antennas. The double-frequency broadband micro-strip antenna is provided with a dielectric substrate, a good conductor layer coats each of the upper and lower surfaces of the dielectric substrate, the good conductor layer at the upper surface is a square patch, a rectangular gap is marked in the center of the square patch along the diagonal line direction, four trapezoidal wide grooves distributed in a central symmetry mode are dug in the outer edge of the square patch, radiation structures of the inclined ladder type tuning arms are arranged in the trapezoidal wide grooves, and a plurality of parallelogram-shaped coupling holes are marked in the inclined ladder type tuning arms; the high-low frequency ratio of the antenna is adjusted through the inclined ladder type tuning arms to precisely generate a needed high-low frequency band, lug-shaped coupling circular rings are arranged at the ends of the inclined ladder type tuning arms, through the lug-shaped coupling circular rings, the frequency point of the antenna can be controlled, the matching impedance is realized effectively, the antenna frequency band is widened, and the good conductor layer at the lower surface is a square earth plate. The double frequency is easy to tune, the frequency band is wide, the gain is high, and the structure is simple; the double-frequency broadband micro-strip antenna with the inclined ladder type tuning arms and lug-shaped coupling circular rings for the Big Dipper can be used for a Big Dipper receiving and emitting integrated terminal.
Description
technical field [0001] The invention relates to a dual-frequency microstrip antenna, in particular to a miniaturized, transceiver-integrated inclined ladder-type tuning arm and ear-shaped coupling ring Beidou dual-band broadband microstrip antenna suitable for Beidou satellite navigation system. Background technique [0002] As the world enters the information age, many fields such as surveying and mapping, telecommunications, water conservancy, fishery, transportation, forest fire prevention, disaster reduction and relief, and public safety are all related to people's livelihood, and they are all inseparable from positioning and navigation systems. Therefore, after energy and information resources, space resources have attracted more and more attention and attention from governments due to their wide application and special status, especially the positioning and navigation functions they provide, which have great significance and roles in the military field. At present, the...
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IPC IPC(8): H01Q13/08H01Q1/38H01Q1/50H01Q13/10H01Q1/48H01Q5/30
Inventor 游佰强宋辉辉周涛周建华戚宇轩唐瑜
Owner XIAMEN UNIV