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The ​​highest gain antennas​​ are typically ​​parabolic reflector dishes​​, achieving ​​30–50 dBi​​ in ​​C/Ku-band (4–18 GHz)​​. Larger diameters ​​(3–10 meters)​​ enhance gain, with efficiency around ​​50–70%​​. For extreme gain ​​(60+ dBi)​​, ​​horn-reflector antennas​​ or ​​cassegrain feeds​​ are used in ​​deep-space communication​​. Precise ​​alignment (0.1° accuracy)​​ and ​​low-noise amplifiers (LNA)​​ maximize performance. Smaller alternatives like ​​Yagi-Uda […]

No, ​​coaxial cables​​ and ​​antennas​​ are not the same. A ​​coaxial cable (e.g., RG-6, 75Ω)​​ transmits RF signals with ​​low loss (3dB/100ft at 1GHz)​​, while an ​​antenna (e.g., Yagi, dipole)​​ radiates or receives electromagnetic waves. For ​​satellite TV​​, a ​​dish antenna (2.4GHz Ku-band)​​ captures signals, which are then carried via ​​coaxial cable​​ to the receiver.

Satellite antennas vary in size, such as Ku-band flat antennas with a diameter of about 0.45 meters, while C-band parabolic antennas can reach a diameter of 2 to 3 meters. The size should be selected based on the frequency, gain requirements and application scenarios. When installing, make sure to align with the satellite to maximize

The ​​best antenna for satellite communication​​ depends on the frequency and application. For ​​Ku-band (12-18 GHz)​​, a ​​parabolic dish (1.2-3m diameter)​​ offers high gain (30-40 dBi) and precise tracking. ​​Phased-array antennas​​ are ideal for ​​mobile systems​​, providing ​​rapid beam steering​​ without mechanical adjustments. ​​Helical antennas​​ excel in ​​circular polarization​​ for ​​L-band (1-2 GHz)​​ with 10-15

Antennas are used to transmit or receive electromagnetic wave signals, such as mobile phone antennas with a frequency range of 800MHz to 2.6GHz. Satellites are devices that operate in orbit and can forward radio signals. For example, communication satellites can cover about 90% of the world and provide television and telephone services. Antenna Functionality At

Satellite communication antenna types include: parabolic antenna (usually 1.2 meters in diameter, suitable for C band), flat antenna (light and thin, suitable for Ku band), helical antenna (supports circular polarization), phased array antenna (can electronically control the beam direction) and portable antenna (easy to deploy, about 0.6 meters in diameter). Choose the appropriate type according

An ​​elevated feed antenna​​ positions the ​​radiator 0.25-0.5λ above ground​​ to ​​reduce surface wave losses by 60%​​, boosting gain ​​3-5dB​​ versus ground-mounted designs. This setup uses ​​folded dipoles or patch arrays​​ at ​​2-6GHz​​, achieving ​​<2:1 VSWR​​ through ​​impedance matching stubs​​. The elevation minimizes ​​multipath interference​​, improving ​​SINR by 15dB​​ in urban environments while maintaining ​​±45°

The key difference lies in ​​radiation control​​: a ​​single antenna​​ emits/receives signals with fixed ​​5-15dBi gain​​, while an ​​array combines multiple elements​​ (4-256+) for ​​steerable beams​​ achieving ​​20-40dBi gain​​. Arrays use ​​phase shifters​​ to electronically adjust patterns ​​within 10μs​​, enabling ​​±60° scanning​​ without mechanical movement. Single antennas cover ​​1-5GHz bandwidth​​, whereas arrays achieve ​​5-10x wider

A ​​triple feed antenna​​ integrates ​​three independent feed points​​ to enable ​​multi-band or multi-polarization operation​​ within a single aperture. This design achieves ​​>90% isolation between ports​​ while supporting ​​simultaneous LHCP/RHCP/linear signals​​. Typical configurations use ​​orthogonal waveguide slots​​ or ​​stacked patches​​, reducing size by 40% versus separate antennas. Key applications include ​​satellite comms (4-30GHz)​​ where it

An ​​axial or front feed antenna​​ positions the ​​feed point along the central axis​​ of parabolic dishes, achieving ​​>60% aperture efficiency​​ with minimal blockage. This design reduces ​​sidelobes by 15-20dB​​ compared to offset feeds while maintaining ​​<2dB noise temperature​​. The waveguide typically extends ​​0.3-0.5x focal length​​, optimized for ​​3-30GHz frequencies​​ with ​​cross-polarization under -30dB​​. ​​Basic