Flexible ultra-wideband filtering antenna

Abstract

The flexible ultra-wideband filtering antenna comprises a dielectric substrate, a radiation patch, a feeder line and a grounding plate, the dielectric substrate is made of a polyimide flexible material, and the radiation patch, the feeder line and the grounding plate are arranged on the upper side of the dielectric substrate. The radiation patch is provided with a rectangular patch with a complementary C-shaped groove, and is formed by printing rolled copper on a dielectric substrate, and the lower end of the rectangular patch adopts a two-semicircle gradual change structure. The feeder line is provided with an inverted U-shaped groove, and the feeder line is connected with the lower end of the radiation patch. The grounding plate is of a stepped structure and located on the two sides of the feeder line, and meanwhile symmetrical inverted-L-shaped grooves are formed in the grounding plate. The antenna is simulated through HFSS software, the coverage frequency band of the antenna is an ultra-wideband frequency band of 2-10 GHz, and the in-band filtering frequency bands of 3.31-3.75 GHz, 5.01-6.05 GHz and 7.32-8.62 GHz correspond to the WiMAX wave band, the WLAN wave band and the satellite X wave band respectively. The antenna has the characteristics of small size, low loss, in-band filtering, softness, wearable performance and the like, is suitable for the fields of body area networks, short-distance communication, wearable equipment and the like, and has a very good application scene.

Description

technical field [0001] The invention relates to the fields of flexible antennas, filter antennas and ultra-wideband antennas, and is mainly applied to the fields of short-distance wireless communication and body area network communication. Background technique [0002] With the rapid development of science and technology, there are more and more human-centered interaction scenarios, such as medical and health monitoring, smart home, smart car system and so on. Communication problems such as higher communication rate, smaller power consumption, and wider bandwidth followed. From 2002, the US Federal Communications Commission released the 3.1-106GHz frequency band for ultra-broadband wireless communication. At this time, short-distance wireless communication appeared. a better solution. [0003] The advantages brought by UWB lie in the characteristics of wide bandwidth, low latency, and low power consumption. There are also many challenges faced by UWB, and the most prominent...

AI Technical Summary

Problems solved by technology

Since the bandwidth occupied by ultra-wideband communication covers the existing narrowband communication frequency band, the narrowband communication is very developed nowadays, and the channel congestion is serious, which means that the in-band interference problem of ultra-wideband communication is more serious

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