Small Dual Notch UWB Antenna

Abstract

The invention provides a miniature double-notch ultra-wideband antenna and is to solve the problem of large size of an existing notch ultra-wideband antenna. The miniature double-notch ultra-wideband antenna comprises a dielectric substrate (1), a radiation patch (2) printed on a longitudinal axis at the lower portion of the upper surface of the dielectric substrate (1), and a floor (3) on the lower surface. The radiation patch (2) adopts a step structure; the two sides of the radiation patch are symmetrically and respectively provided with a mushroom-type EBG structure (4); the mushroom-type EBG structure (4) is etched by meander bent gaps; the middle place of the floor (3) is provided with a wide gap; the two sides of the floor are symmetrically and respectively provided with a four-arm spiral slit (31); and the mushroom-type EBG structure (4) and the floor (3) are connected through metalized via holes (5). The miniature double-notch ultra-wideband antenna has the advantages of small size, wide bandwidth and good notch effect, and can be widely applied to the field of ultra-wideband wireless communication.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a small double-notch ultra-wideband antenna, which is applied in the field of ultra-wideband wireless communication. Background technique [0002] Ultra-wideband (Ultra-WideBand, UWB) technology is a new type of wireless communication technology with great development potential developed after the 1990s. It realizes ultra-wideband and high-speed data transmission within a short distance. UWB technology can be applied to many fields such as intelligent transportation system, wireless sensor network, radio frequency identification, imaging application and so on. After the US Federal Communications Commission (Federal Communications Commission, FCC) applied the UWB to the commercial field, the communication system with an operating frequency of 3.1 GHz-10.6 GHz has been vigorously developed. At the same time, because modern consumer electronics products, especially portable wirele...

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Problems solved by technology

Another example is the Chinese patent application, application publication number CN104681964A, the Chinese patent titled "a novel three-notch ultra-wideband antenna", which proposes a three-notch ultra-wideband antenna. The unit is a microstrip-fed circular monopole, which produces ultra-broadband characteristics. The antenna frequency range covers 3.1GHz to 10.6GHz. Three L-shaped slot EBG units with different sizes are respectively loaded on 50 ohm Both sides of the feeder are coupled to form three notched bands of WiMAX (3.3GHz~3.6GHz) and WLAN (5.15GHz~5.35GHz and 5.725GHz~5.825GHz). The overall physical size of the antenna is 42.9mm×34mm×1.6mm , the antenna volume is larger

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