Analysis of via discontinuity

Chen, Houfei; Huang, Chung-Chi; Tsang, Leung; Qin, Li

doi:10.1002/mop.11194

Cited by 3 publications

References 17 publications

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Transmission and scattering on interconnects with via structures

Huang

Lai

Tsang

et al. 2005

Microw. Opt. Technol. Lett.

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maintain a front-to-end ratio of more than 10 dB in both the E-plane and H-plane. Meanwhile, the antenna gain versus frequency is also simulated and measured with two resonance bands, and the results are presented in Figure 6. As can be seen, compared with the simulations and measurements, the variations of antenna gain within the two bands are less than 0.9 dBi (band I) and 1.8 dBi (band II). In the measurements, gains of 3.6 -5.0 dBi in band I and 2.4 -5.3 dBi in band II are obtained, and a lower cross-polarization level of about Ϫ20 dB is achieved. In addition, the peak gain is 4.98 dBi at 3.1 GHz in band I and 5.3 dBi at 5.2 GHz in band II. CONCLUSIONA novel dual-band antenna with modified quasi-Yagi planar structure has been presented in this paper. In practice, three shuntconnected dipoles of various lengths, which represent the reflector, resonator, and director, respectively, were etched in the ground plane. Meanwhile, a hook-shaped balun was proposed for the feed-line design. This antenna is characterized by unidirectional end-fire radiation patterns and dual-band impedance bandwidth. With the return loss is smaller than 10 dB, the dual bands cover the ranges 2.13-3.1 GHz and 5.15-5.9 GHz. Furthermore, gain variations of 3.6 -5.0 dBi in band I and 2.4 -5.3 dBi in band II are obtained. Both the measurement and simulation results of the return-loss responses and radiation patterns agree well.The performance of the dual-band antenna includes wide bandwidth in each band, good radiation patterns in both principal planes, and a higher front-to-back pattern ratio. The differential signaling of common and differential modes of coupled interconnects are illustrated.

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