|
Abstract
|
|
|---|---|
| Artificial transmission lines based on lattice network unit cells can mimic the behavior of actual metamaterial transmission lines without introducing any stopband, as opposite to their conventional counterparts based on T- or Pi-network unit cells, which can be balanced to suppress the stopbands in the transitions from left- to right-handed bands, but will always present stopbands in the right-handed- to left-handed-band transitions. The aim of this paper is twofold. First, the general properties of lattice network unit cells are discussed using simple circuit theory concepts. As a result, a systematic classification of all possible balanced lattice network-based artificial transmission line unit cells is described. Second, a novel multiband lattice network-based unit cell is presented. The proposed unit cell is made up of a coupled-microstrip section in a host microstrip and requires neither air bridges nor via-holes. Coupled lines have already been used to obtain composite right-/left-handed transmission lines, but a solution, based on wiggly lines, is given in this paper to the problem caused by the different even- and odd-mode phase velocities. As a result, the wideband capabilities of the artificial transmission line are fully exploited, as the theoretical and experimental results corroborate. | |
|
International
|
Si |
|
JCR
|
Si |
|
Title
|
IEEE Transactions on Microwave Theory and Techniques |
|
ISBN
|
0018-9480 |
|
Impact factor JCR
|
|
|
Impact info
|
|
|
Volume
|
60 |
|
|
10.1109/TMTT.2012.2198225 |
|
Journal number
|
8 |
|
From page
|
2385 |
|
To page
|
2393 |
|
Month
|
AGOSTO |
|
Ranking
|
|