A metallic 3D printed K ‐band quasi‐pyramidal‐horn antenna array

Micro & Optical Tech Letters

Huang

Zhang

et al. 2021

Self Cite

In this article, a novel lens antenna with wide beamwidth using three-dimensional printing is proposed. The proposed antenna is comprised of a concave lens by using three-dimensional printing, a lantern shaped patch with a parasitic ring, and eight loaded monopoles around the center. The antenna operating frequency is 5.8 GHz, and the prototype is implemented. The measured half power beamwidth are 142 and 130 at the xoz and the yoz planes, respectively. Besides, the antenna is low cost, easy to fabricated, and very low cross polarization. Measured results agree well with the simulation results.

Section: Introductionmentioning

confidence: 99%

A novel lens antenna with wide beamwidth using three dimensional printing

Micro & Optical Tech Letters

Huang

Zhang

et al. 2021

Self Cite

“…Additive manufacturing or 3-D printing technology has been increasingly adopted in antenna field due to its attractive advantages, such as rapid prototyping, material economization and process simplicity in complicated structures. 1 Up to now, various 3-D printed antennas have been proposed, such as patch antenna, [2][3][4] horn antenna, 5 wire antenna, 6,7 and so on. Specifically, a distinct characteristic of 3-D printed antenna is the architectural complexity, which can be hardly realized by those conventional processing crafts and breaks the typical design thought.…”

Section: Introductionmentioning

confidence: 99%

Fully integrated design of a probe‐fed open‐ended waveguide filtering antenna using 3‐D printing technology

Int J RF Microw Comput Aided Eng

et al. 2021

This article presents a fully integrated design of probe-fed open-ended waveguide filtering antenna by adopting 3-D printing technology. As for the conventional processing technologies such as computer numerical control machining, they usually suffer from mutually separated parts and inquire post-processing assembly in the fabrication of complex waveguide structure. Compared with them, the 3-D printing technology can provide possibility to directly form an all-in-one architecture after reasonable design to avoid unexpected concave, thus eliminating the error caused by assembly as can as possible. In this article, the aforementioned manufacture strategy has been successfully applied to waveguide filtering antenna. By adopting a tilted setting in selective laser melting process that is a kind of 3-D printing technologies, the proposed waveguide antenna with internal structure can be fabricated without flaw and extra supporter. The probe-fed waveguide antenna is designed herein by reforming the first-and last-order cavities of a waveguidefed metal-insert filter to achieve similar filtering characteristics. This design offers a feasible example of all-in-one waveguide filtering antenna and can be extended to other waveguide components. K E Y W O R D S3-D printing technology, all-in-one architecture, selective laser melting, waveguide filtering antenna

“…For this purpose, all-metal tightly coupled arrays have been studied. [24][25][26][27][28][29][30][31] For example, the step-type Vivaldi structure and metal cavity designed by S. Zhou et al 24 achieved the impedance bandwidth of 10.5 to 14.5 GHz. Next, in order to further expand the bandwidth, B.…”

Section: Introductionmentioning

confidence: 99%

Wideband tightly‐coupled dual‐line polarized P‐band antenna array with low‐profile lightweight metal structure

Sun

Int J RF Mic Comp-Aid Eng

et al. 2021

In this article, an all-metal structure antenna array is proposed. The novel hollow-out structures are designed to achieve low profile and lightweight. The top structure of the element is also tightly coupled, once again lowering the antenna array profile. The overall size of the array is 1354.0 Â 1354.0 mm 2 , the spacing between elements is 323.0 mm. The optimized array-structure profile is only 0.12 λ 0 (λ 0 corresponds to the wavelength of 0.4 GHz). In addition, an excellent dual-line polarization radiation is achieved by using a crossstaggered arrangement. Both polarizations of the array have a cross-polarization-level of smaller than À30 dB. In order to verify the feasibility of the scheme, prototype processing and testing are carried out, and the test results are consistent with the simulation results. The frequency band covers the P-band (0.4-0.7 GHz). The active voltage standing wave ratios (VSWRs) are less than 2.0. In addition, the antenna array has favorable radiation characteristics.The measured realized gain varies from 14.7 to 19.6 dBi over the work band. The total antenna efficiency is higher than 83%. It can be applied to phased arrays for the satellite system and other broadband lightweight metal antennas.