A vertically periodic defected ground structure and its application in reducing the size of microwave circuits |
| |
Authors: | Jong-Sik Lim Young-Taek Lee Chul-Soo Kim Dal Ahn Sangwook Nam |
| |
Affiliation: | Appl. Electromagn. Lab., Seoul Nat. Univ., South Korea; |
| |
Abstract: | The microstrip and coplanar waveguide transmission lines combined by a vertically periodic defected ground structure (VPDGS) are proposed. The slow-wave effect, equivalent circuit, and the performances are shown. As an application example, VPDGS is adopted in the matching networks of an amplifier for size-reduction. Two series microstrip lines in input and output matching networks of the amplifier are reduced to 38.5% and 44.4% of the original lengths, respectively, due to the increased slow-wave effects, while the amplifier performances are preserved. |
| |
Keywords: | |
|
|