Quasi-optical systems are frequently designed on the assumption that the propagating radiation approximates to a fundamental-mode Gaussian beam; this can be described as a paraxial approximation to a solution of the scalar wave equation. Gaussian beam theory can be used to generate designs for ...
An array feeder for a reflector or a lens provides considerable flexibility in the beams that can be produced. A single beam could be obtained by combining all elements; multiple beams can be created with clusters of subarrays or the elements combined in such a way that a beam is steered b...
The reflectarray is a novel type of high-gain antennas, which combines some of favorable features of reflectors and arrays. It consists of a space-feeding ... S Xu,Y Fan - Springer Singapore 被引量: 5发表: 2016年 Antenna Theory Analysis And Design 3rd Edition Solution Manual Modern Antenna...
Reflectarray antenna for communication satellite frequency re-use applicationsA dual-polarized antenna includes a planar line or surface array of reradiating elements of two different polarizations. Each reradiating element in one embodiment is a short-circuited vertical or horizontal dipole. The vertical...
The use of millimetric frequencies also allows broad-band / high data rates to be achieved with a modest percentage bandwidth of operation for the antenna. 展开 会议名称: IEE conference on antennas and propagation 收藏 引用 批量引用 报错 分享 ...
2022). Through the strategic design and creation of a distributed Bragg reflector (DBR), the study successfully enhances the colour purity of red and green light emitted by QDs while optimizing the utilization of blue light from micro-LEDs. This technology’s implementation involves transferring red...
(AMC), and parasitic strips. By utilizing the Brillouin dispersion diagram, the AMC is designed as the antenna reflector. It has a wide in-phase reflection bandwidth of 54.7% (1.54-2.70 GHz) and a surface-wave bound range of 0-2.65 GHz. This design effectively reduces the antenna profile ...
The paraboloid reflector is one example of how optical principles may be applied to microwave lens antenna, and the Lens Antenna is yet another. It is used
Analysis of errors for uplink array of 34-m antennas for deep space applications Although the technologies for large arrays of distributed reflector antennas with just downlink (receiving) capability have been well defined and proven fo... F Amoozegar,L Paal,A Mileant,... - IEEE 被引量: ...
A compact range is a facility used for the measurement of antenna radiation and target scattering problems. Most presently available parabolic reflectors do not produce ideal uniform plane waves in the target zone. Design improvements are suggested to reduce the amplitude taper, ripple and cross pola...