Author details

Ming-Chun Tang\*, Yang Wang and Ting Shi School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, China

\*Address all correspondence to: tangmingchun@cqu.edu.cn

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far-field radiation performance characteristics of this two-stage NFRP filtenna were also studied experimentally. The simulated (measured) results shown in Figure 20 demonstrate that the addition of the second CLL resonator introduces another resonance and produces a 55 (50) MHz impedance bandwidth, from 1.321 (1.29) to 1.376 (1.34) GHz, i.e., a 4.0% (3.8%) fractional bandwidth. The measured operational frequency range exhibits only a slight red shift from the simulated one. A flat realized gain response and excellent band-edge selectivity are again witnessed. The measured and simulated realized gain curves demonstrate that the two-stage NFRP filtenna also exhibits an essentially uniform and stable radiation performance over

The simulated and measured |S11| and realized gain values as functions of the source frequency for the two-stage

R1 = 75 R2 = 20.7 R3 = 16.8 W1 = 2.5 W2 = 1.4 W3 = 12.73 W4 = 12.3 W5 = 1.7 W6 = 4.3 W7 = 9.01 W8 = 0.49 W9 = 1.0 W10 = 14.4 W11 = 0.2 W12 = 0.3 W13 = 0.3 L1 = 0.9 L2 = 7.7 L3 = 3.0 L4 = 8.7 L5 = 0.3 L6 = 0.13 L7 = 0.76 L8 = 7.95 L10 = 18.52 L11 = 2.52 L12 = 6.0 L13 = 0.2 L14 = 6.0 h1 = 9.6 h2 = 1.0 h3 = 0.762 h4 = 0.017 h1 = 0.762 Null

Dimensions of the NFRP filtenna with two filter stages shown in Figures 4–6 (all dimensions are in

its entire operational bandwidth.

NFRP filtenna shown in Figure 19.

Table 2.

millimeters).

Electromagnetic Materials and Devices

Figure 20.

268
