Abstract In this paper we discuss the design, manufacturing and characterization of feed horn array Strip instrument Large Scale Polarization Explorer (LSPE) experiment. is a microwave telescope, operating in Q- W-band, for observation polarized emissions from sky large fraction (about 37%) Northern hemisphere with sub-degree angular resolution. The focal plane populated by forty-nine Q-band si...

In this paper, a broadband double-ridge horn antenna (DRHA) covering 5G millimeter-wave (mm-wave) band is proposed, which maintains stable radiation pattern and gain in the entire band. By redesigning transition between coaxial waveguide, there no splitting or deterioration axis throughout 18-54 GHz frequency band, VSWRs are all below 2. Meanwhile, by replacing H-Side wall of with metal grid, v...

This paper investigates the relationship between mechanical behaviors and shape of corrugated fiberboard by means of buckling analysis, which is done by FEM (Finite Element Method). Firstly, after analyzing the structure of corrugated fiberboard a single-wall corrugated fiberboard model was built. The buckling load was measured in the ideal condition by linear buckling analysis (eigenvalue buck...

Series feeds are commonly used in antenna arrays because of their compact size and low loss compared to corporate but typically feature beam squint over wide bandwidths. This work proposes a series-fed waveguide horn array with reduced by introducing synthesized time delay sections between the horns feed line. The array, implemented WR42 waveguide, achieves 1.53° 4 GHz operating band, 10.52° fo...