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Antenna Knowledge Antenna Gain
1. Antenna gain Antenna gain refers to the ratio of the radiation power density of the antenna in a certain specified direction to the radiation power density of the reference antenna (usually an ideal radiation point source) at the same input power. The parameters that ...Read more -
How to improve the transmission efficiency and range of the antenna
1. Optimize antenna design Antenna design is the key to improving transmission efficiency and range. Here are several ways to optimize antenna design: 1.1 Use multi-aperture antenna technology Multi-aperture antenna technology can inc...Read more -
Relationship between the power of RF coaxial connector and signal frequency change
The power handling of RF coaxial connectors will decrease as the signal frequency increases. The change of transmission signal frequency directly leads to changes in loss and voltage standing wave ratio, which affects the transmission power capacity and skin effect. For ...Read more -
A review of transmission line antennas based on metamaterials (Part 2)
2. Application of MTM-TL in Antenna Systems This section will focus on artificial metamaterial TLs and some of their most common and relevant applications for realizing various antenna structures with low cost, easy manufacturing, miniaturization, wide bandwidth, high ga...Read more -
A Review of Metamaterial Transmission Line Antennas
I. Introduction Metamaterials can be best described as artificially designed structures to produce certain electromagnetic properties that do not exist naturally. Metamaterials with negative permittivity and negative permeability are called left-handed metamaterials (LHM...Read more -
A review of rectenna design (Part 2)
Antenna-Rectifier Co-design The characteristic of rectennas following the E-G topology in Figure 2 is that the antenna is directly matched to the rectifier, rather than the 50Ω standard, which requires minimizing or eliminating the matching circuit to power the rectifier...Read more -
A review of rectenna design (Part 1)
1.Introduction Radio frequency (RF) energy harvesting (RFEH) and radiative wireless power transfer (WPT) have attracted great interest as methods to achieve battery-free sustainable wireless networks. Rectennas are the cornerstone of WPT and RFEH systems and have a signi...Read more -
Overview of Terahertz Antenna Technology 1
With the increasing popularity of wireless devices, data services have entered a new period of rapid development, also known as the explosive growth of data services. At present, a large number of applications are gradually migrating from computers to wireless devices su...Read more -
Antenna Review: A Review of Fractal Metasurfaces and Antenna Design
I. Introduction Fractals are mathematical objects that exhibit self-similar properties at different scales. This means that when you zoom in/out on a fractal shape, each of its parts looks very similar to the whole; that is, similar geometric patterns or structures repea...Read more -
RFMISO Waveguide to Coaxial Adapter (RM-WCA19)
Waveguide to coaxial adapter is an important part of microwave antennas and RF components, and it plays a key role in ODM antennas. A waveguide to coaxial adapter is a device used to connect a waveguide to a coaxial cable, effectively transmitting microwave signals from ...Read more -
Introduction and classification of some common antennas
1. Introduction to Antennas An antenna is a transition structure between free space and a transmission line, as shown in Figure 1. The transmission line can be in the form of a coaxial line or a hollow tube (waveguide), which is used to transmit electromagnetic energy fr...Read more -
Basic parameters of antennas – beam efficiency and bandwidth
figure 1 1. Beam efficiency Another common parameter for evaluating the quality of transmitting and receiving antennas is beam efficiency. For the antenna with the main lobe in the z-axis direction as shown in Figure 1, be...Read more
