1. Influence from Ground Attenuation, Screening, Reflection, Directivity Index.

2. The antenna received signals with no directivity.

3. The paper shows directivity pattern of N-octaves constant beamwidth.

4. A method to obtain the vertical directivity of hydrophone triplets towed line sonar by the optimal array processing is introduced in brief at first.

5. This power monitor incorporates a low-loss, high directivity stripline coupler with independent linear power detection circuits.

6. The principles include directivity, scientific nature, characteristic, stability, and pertinence.

7. Based on the basic theory of array directivity realize infrasound focusing by line transducer array, and design a new parabolic array.

8. Directivity and main lobe width were compared for the linear phased array acoustic transmitters with amplitude weighting and non-amplitude weighting using numerical examples.

9. The directivity pattern of the sound field can be changed by adjusting the number of axial stiffeners when the axially driving force is exerted on one of the stiffeners.

10. The directivity of microstrip coupler is worse than that of strip line coupler. Many methods can be used to improve this situation.

11. In consideration of the directivity and acoustic power, the input voltage distribution of a loudspeaker array can be optimized and selected.

11. is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

12. This is an Academia Sinica directivity innovation project part of research content.

13. The forward directivity velocity pulse generated by strike slip fault in full space is studied.

14. Directivity and sound diffraction of the pinna of the Megaderma spasma are studied to predict the the role of these outer ear extensions in the biosonar system.

15. The simple formulae of fast calculating aperture antenna directivity and gain are derived using antenna beamwidths. Applied range of these formulae are analyzed and discussed.

16. For dip-slip faults, there are two prominent effects: the rupture directivity effect and hanging wall effect.

17. This paper begins with a general formulation of calculating the largest directivity for conical array.

18. Impedance, Gain, Radiation pattern, Beam width , Radiation resistance, Antenna efficiency, Directivity and Polarization Measurements.

19. As a result, the sound source not only can suppress effectively side lobe and reduce the width of main lobe, but also has its directivity at any acoustic frequency.

20. The higher the acoustic frequency is, the stronger its directivity is.

21. In this paper, a closed chamber technique for measuring the complex free field sensitivity and directivity patterns of line array is described.

22. As loudspeaker radiation varies according to frequency, LF and HF drivers have intrinsically different radiation patterns whose directivity - known as 'Q' - changes at the crossover frequency.

23. Dispersion Angle vs Frequency This graph displays the MR64B's excellent horizontal and vertical directivity control.

24. Directional coupler is widely used in modern microwave system, how to test directional coupler's directivity with high directivity is a difficulty.

25. I am so ashamed of confusing the two concept: directivity pattern and directivity coefficient.

26. This paper analyses the pattern function of DBF in subarray. The designing method for directivity pattern is given and the condition of producing the grating lobe is discussed.

27. This paper proposes a general model of sound scattering and directivity pattern for a vector sensor located on a complicated reflecting boundary.

28. In this paper, the radiation pressure and directional formulation are calculated by use of Reily-integrate, The directivity of radiated sound field of quadrate ring piston is analyzed.

29. The course evaluation of ideological cultivation should obey the Principles of directivity , development, and integration.

30. The integrand includes a multiplying factor of the vertical directivity of the noise intensity, and the layered ocean environment affects the spatial coherences via this directivity factor.

31. The results for element input impedance , radiation efficiency of space wave, directivity and radiation pattern are presented.

32. How to get the desired frequency response and directivity pattern?

33. The directivity of new end-fire array is higher than ordinary ones and the coupling is lower than Hansen-Woodyar...

34. Interference (or 'lobing') between the two units causes a dip in power response around this frequency, with a peak above it due to their differences in directivity.

35. It is proposed to use the energy concentration factor and directivity factor as indication of the directivity of the array,(http:///directivity.html) and formulae as well as the way of using them are presented.

36. No obvious directivity occurs in the songs of black cicada.

37. The radiation directivity of a complicated conformal array of underwater acoustic transducers is presented based on the boundary element method.

38. The inheritance that its performance grows in dimensional productivity, directivity, acceleration and internationally 4 respects.

39. A new method is described, which introduces linear sweep to determine the electroacoustic qualities of loudspeakers, such as frequency response and directivity of loudersperkers.

40. Laser is a new light source. Comparing with ordinary light the laser has good monochromaticity , directivity, coherency, high brightness, high power and high energy etc.

41. The establishment question situation, can spiritedly cause the classroom, the knowledge simple to be easy to understand, its intense practice directivity is extremely obvious.

42. A built-up circular piston sound source is established in this paper. The directivity formula of its far field is obtained, and its validity is simulated.

43. On the basis of lots of preliminary tests of the hydrophone, sound pressure sensitivity in the air and directivity pattern were tested as well as the ability of receiving sound signal in water.

44. Millimeter-wave dielectric lens antenna is a kind of aperture antenna with high directivity.