An Improved Quasi-Self-Complementary Broadband Multimode Antenna for LTE/WWAN

Abstract

The invention belongs to the technical field of wireless communication, and discloses an improved quasi-self-complementary broadband multimode antenna applied to LTE / WWAN. The antenna is provided with: a rectangular dielectric substrate; a microstrip feeder and a radiation patch are located on the upper surface of the rectangular dielectric substrate ; The metal floor is located on the lower surface of the rectangular dielectric substrate. Among them, the radiating patch is composed of a triangular radiating patch and a narrow rectangular radiating patch; there are slots etched on the metal floor, and the slots are composed of triangular slits, narrow rectangular slits, and wide rectangular slits. The upper part of the rectangular metal floor is provided with Metal extension arm. The invention miniaturizes the volume of the antenna, expands the working bandwidth, and realizes the broadband characteristics of the antenna; forms the multi-mode characteristic of the antenna, and meets the requirements of more wireless communication systems; improves the radiation out-of-roundness characteristics of the antenna, and has a very simple structure, thereby reducing the complexity of the antenna in the wireless communication system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an improved quasi-self-complementary broadband multimode antenna applied to LTE / WWAN. Background technique [0002] In wireless communication systems, it can be seen from Shannon's theorem that "broadband" and "high capacity" are synonyms, so broadband antenna design has always been a hot research direction. In recent years, the diversity requirements of broadband antenna applications have been increasing, especially with the rapid development of wireless networks, the third and fourth generation communication systems have been fully covered, in order to be fully applicable to 3G, 4G terminal equipment and wireless terminal equipment For short-distance communication, it is of great value to design a terminal antenna with a simple structure covering multi-mode frequency bands. At present, the antennas used in modern wireless communication terminals stil...

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Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the present invention provides a multi-mode antenna with simple structure, low profile, small size, broadband and omnidirectionality applied in terminal equipment, aiming to solve the complex structure and high profile of wireless terminal equipment antennas. , narrow bandwidth, and poor horizontal omnidirectional characteristics

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