- PATCH ANTENNA ARRAY CALCULATOR HOW TO
- PATCH ANTENNA ARRAY CALCULATOR PATCH
- PATCH ANTENNA ARRAY CALCULATOR SERIES
PATCH ANTENNA ARRAY CALCULATOR HOW TO
How to perform simulation design of microstrip antenna? The characteristic impedance of the microstrip line is not only related to the effective dielectric constant but also related to the line width and thickness of the antenna and the thickness of the dielectric layer. In summary, the calculation formula for the characteristic impedance Z0 of the microstrip antenna is obtained as follows: Assuming that there is no loss in the transmission process, the characteristic impedance of the antenna can be expressed by the distributed capacitance C per unit length and the phase velocity Vp:Īssuming that the transmission line is a uniform dielectric material and the dielectric constant is εr, then C and Vp are:ĭerived from the above formula, the effective dielectric constant εe can be simplified as:Īmong them, Z0 is the characteristic impedance of the actual measurement transmission line, and Z'0 is the characteristic impedance of the same transmission line with air as the filling medium. The microstrip line is mainly based on transverse electromagnetic waves. The different design of the antenna structure can make the maximum radiation direction of this type of microstrip traveling wave antenna lie in any direction from side fire to end fire.Ĭharacteristic Impedance and Calculation Formula of Microstrip Antenna After the terminal is connected to the matched load, it can form a microstrip traveling wave antenna. The radiating plates can be a chain periodic structure or an ordinary long TEM transmission line.
PATCH ANTENNA ARRAY CALCULATOR SERIES
It is composed of a substrate, a ground plate and a series of radiating plates.
PATCH ANTENNA ARRAY CALCULATOR PATCH
The microstrip slot antenna can generate radiation on the side of the radiation patch and the side of the ground plate it has low manufacturing tolerance requirements it can produce a circular polarization effect when combined with the microstrip dipole antenna. It can be divided into narrow slot antennas and wide slot antennas. The shape of the gap can vary according to actual conditions. The maximum radiation direction of this type of microstrip antenna is generally in the measurement direction, that is, the direction perpendicular to the substrate.īecause it has a gap on the ground plate, the feeder on the substrate can radiate to the side of the ground plate through the gap under excitation. The shape of the radiating patch unit is various, whether it is a regular rectangle, a polygon, or an irregular ellipse, ring or sector, etc., it can be used as a radiating element. It is composed of a dielectric substrate, a radiation patch and a ground plate, and is a common form of microstrip antenna. According to the structural characteristics, microstrip antennas are generally divided into three types: microstrip patch antennas, microstrip slot antennas, and microstrip antenna arrays (mainly microstrip traveling-wave antennas).Ĭlassified by shape, there are circular, rectangular, ring microstrip antennas, etc.Īccording to the working principle, it can be divided into resonant type (standing wave type) and non-resonant type (traveling wave type) microstrip antennas. There are many types of microstrip antennas. Microstrip line refers to a microwave transmission line composed of a single conductor strip on a dielectric substrate, which is suitable for making a planar transmission line structure for microwave integrated circuits.
The shape of the radiator can be changed in many ways according to requirements. The metal thin layer at the bottom of the substrate is connected to the ground plate, and the metal thin layer with a specific shape is made through a photolithography process as a radiator. The thickness of the dielectric substrate is much smaller than the wavelength.
The structure of a microstrip antenna is generally composed of a dielectric substrate, a radiator, and a ground plate.