If the assembly starts to drop, get away from it and let it fall. Remember, the antenna, mast, cable, and metal guy wires are all excellent conductors of electrical current. Even the slightest touch of any of these parts to a power line completes an electrical path through the antenna an...
Generally, polarization and phase are considered as two relatively independent parameters of light, and show little interaction when a light propagates in a homogeneous and isotropic medium. Here, we reveal that orbital angular momentum (OAM) of an optic
A broadband dual-polarization base station antenna element for DCS/PCS/3G and 4G (certain standards) bands is presented in this paper. Simulations and measurements have shown that it has an impedance bandwidth of VSWR<;1.4 over 1.71GHz-2.69GHz, within which the ports isolation (PI) is better...
Step 2:In the next step, an-isotropicity is introduced to the unit cell in 3(a) so that polarization conversion takes place. This step involves the design of a square C1xC1 which is placed along the diagonal with corner to corner distance from step 1’s square ring as 2*w. It is ...
In this section, some detailed analysis and mathematical deduction are done to demonstrate the PDMA-PM. Here, we take the binary modulation as an example, and analyze its multiuser separation, demodulation and BER performance. Especially, we assume that all of the polarization states allocated to ...
To our knowledge, this is the first demonstration of a dual-polarized dual-beam phased array for 5G polarization-based multiple-input–multiple-output (MIMO) systems with 60-Gb/s maximum data rates. 展开 关键词: Cross-polarization data link dual-polarized (DP) patch antenna error vector ...
Planar Ultrawideband Modular Antenna Array A planar ultrawideband modular antenna for connection to a feed network. The antenna has a ground plane, and an array of antenna elements spaced from the ground plane, each antenna element comprising a pair of arms. A first fed arm is el... SS Hol...
This paper presents a microwave active transponder using a two-port cross-shaped microstrip antenna. The linearly polarized field coming from an interrogating signal is received by the first port, amplified and used as the locking signal of a local oscillator. The output signal of this oscillator ...
of multiple diversified functionalities into a single ultrathin device with a compact footprint have become an emerging research area. Recently, Hasman and colleagues proposed a generic approach to realizing multifunctional metasurfaces via the synthesis of shared-aperture antenna arrays and geometric ...
After the first successful ascertainment of metamaterial absorber (MMA) properties, numerous studies are ongoing to design MMA for several applications like GPS positioning application18, noise reduction by improving MIMO antenna isolation19, reduction of radar cross-section20, stealth technology for ...