## Figure 6 Dipole used as a reference gain antenna, mounted within a sphere ## CONCLUSION A new measurement method using a specially designed ''random'' positioner has been described. It allows the accurate determination of the maximum gain of electrically small antennas. This will permit a bett
β¦ LIBER β¦
Measurement of coupling characteristics of an Ni:LiNbO3 directional coupler with a combinational-type waveguide structure
β Scribed by Wen-Ching Chang
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 97 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
β¦ Synopsis
A nickel-indiffused LiNbO directional coupler with a 3 combinational wa¨eguide structure was fabricated successfully by the proton-exchanged wet-etching technique for the first time. In addition,
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## Abstract Two kinds of groove structure for shortening and broadening the coupling lengths of Ti:diffused LiNbO~3~ directional couplers are presented. The coupling lengths as functions of the depth, width, and spacing of the grooves were numerically calculated. The results show that the maximum s