## 4. CONCLUSION We present a method-of-moments-based analysis of different helical antennas. The dielectric coating effect and finite ground planes are taken into account. A simple method is described for transforming a printed quadrifilar helical antenna into an equivalent wire structure, allowin
Coaxial line methods for measuring permittivity and dielectric loss
β Scribed by B. L. J. Kulesza; J. S. Thorp; A. Bakar Ahmad
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 455 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0022-2461
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π SIMILAR VOLUMES
## Abstract The design of a cavity resonator implies to solve the Maxwell equations inside that cavity, respecting the boundary conditions. As a consequence, the resonance frequencies appear as conditions in the solutions of the differential equation involved. The measurement of the complex permitt
The complex permitti¨ity of low-loss dielectric materials ( ) ABS and graft polymer in the 94 GHz band is measured using the free-space method. The ¨alidity of the free-space method at 94 GHz is confirmed, and the data of the complex permitti¨ity of these materials are presented.