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dipole antenna造句
1. It is demonstrated that, to the half-wave dipole antenna, meander-line dipole antenna has the better feature of miniaturization while maintaining the required radiation efficiency. 2. The frequency response of radiation pattern a linear dipole antenna by Hertz dipoles field summation approximation. 3. The scattering of dipole antenna array and microstrip antenna array is discussed in this paper. 4. A log - periodic dipole antenna is analyzed by using circuit - array approach. 5. To obtain the balanced feed for the dipole antenna driven by a coaxial transmission line, a coplanar waveguide fed structure is used. 6. The distributed static capacitance of the dipole antenna was solved by finite difference method. The influences of the antenna configuration coefficients on the distributed capacitance were analyzed. 7. A coaxial antenna is a variant of the dipole antenna, designed for use with an unbalanced feed line. 8. The general formulas of radiation from dipole antenna in a circular waveguide are given by means of dyadic Green's function and field transformation. 9. A new type of broadband printed twin dipole antenna is proposed in this paper. Corresponding feed structure of broadside coupled parallel line is also designed. 10. The influence of ground screen on vertical dipole antenna was studied. 11. The log - periodic dipole antenna is a linearly polarized frequency independent antenna of moderate gain. 12. We use a circular polarization antenna and a two - element dipole antenna array to cancel the interference. 13. For a UWB communication system, by using differential characteristic of Herz magnetic dipole antenna, the narrow pulse can be produced from the rise edge of input square-wave signal. 14. In this thesis, we describe the design of the printed planar log periodic dipole antenna. 15. This BALUN can effectively compensate the series reactances by introducing a shunt resonant circuit and thus achieve the maximum bandwidth of microstrip dipole antenna. 16. A method, covering the antenna with an antenna radome, is proposed in the paper to realize the broadband impedance matching of the half-wave dipole antenna. 17. The exact modeling and simulation for wire junction, wire ring with quadrate shaped, dipole antenna, yagi antenna and log-period antenna are presented as the examples. 18. This paper chooses a normal mode helical antenna to replace the short dipole antenna to improve efficiency.