%0 Journal Article %1 :/content/aip/journal/jap/120/1/10.1063/1.4954676 %A Forouzmand, Ali %A Kaipa, Chandra S. R. %A Yakovlev, Alexander B. %D 2016 %J Journal of Applied Physics %K myown publication %N 1 %R http://dx.doi.org/10.1063/1.4954676 %T Mushroom-type structures with the wires connected through diodes: Theory and applications %U http://scitation.aip.org/content/aip/journal/jap/120/1/10.1063/1.4954676 %V 120 %X In this paper, we establish a general formalism to quantify the interaction of electromagnetic waves with mushroom-type structures (high impedance surface and bi-layer) with diodes inserted along the direction of the wires. The analysis is carried out using the nonlocal homogenization model for the mushroom structure with the generalized additional boundary conditions at the connection of the wires to diodes. We calculate numerically the magnitude and phase of the reflected/transmitted fields in the presence of an ideal and realistic PIN diodes. It is observed that the reflection/transmission characteristics of the mushroom-type structures can be controlled by tuning the working states of the integrated PIN diodes. We realize a structure with a multi-diode switch to minimize the undesired transmission for a particular incident angle. In addition, a dual-band subwavelength imaging lens is designed based on the resonant amplification of evanescent waves, wherein the operating frequency can be tuned by changing the states of the PIN diodes. The analytical results are verified with the full-wave electromagnetic solver CST Microwave Studio, showing a good agreement.

@article{:/content/aip/journal/jap/120/1/10.1063/1.4954676, abstract = {In this paper, we establish a general formalism to quantify the interaction of electromagnetic waves with mushroom-type structures (high impedance surface and bi-layer) with diodes inserted along the direction of the wires. The analysis is carried out using the nonlocal homogenization model for the mushroom structure with the generalized additional boundary conditions at the connection of the wires to diodes. We calculate numerically the magnitude and phase of the reflected/transmitted fields in the presence of an ideal and realistic PIN diodes. It is observed that the reflection/transmission characteristics of the mushroom-type structures can be controlled by tuning the working states of the integrated PIN diodes. We realize a structure with a multi-diode switch to minimize the undesired transmission for a particular incident angle. In addition, a dual-band subwavelength imaging lens is designed based on the resonant amplification of evanescent waves, wherein the operating frequency can be tuned by changing the states of the PIN diodes. The analytical results are verified with the full-wave electromagnetic solver CST Microwave Studio, showing a good agreement.}, added-at = {2016-12-10T02:40:23.000+0100}, author = {Forouzmand, Ali and Kaipa, Chandra S. R. and Yakovlev, Alexander B.}, biburl = {https://www.bibsonomy.org/bibtex/20efc469d6d3024ce990417b326304f13/alifrzd}, doi = {http://dx.doi.org/10.1063/1.4954676}, eid = {015303}, interhash = {4b6d47287f5081d921a781694729eb04}, intrahash = {0efc469d6d3024ce990417b326304f13}, journal = {Journal of Applied Physics}, keywords = {myown publication}, number = 1, timestamp = {2016-12-10T02:42:16.000+0100}, title = {Mushroom-type structures with the wires connected through diodes: Theory and applications}, url = {http://scitation.aip.org/content/aip/journal/jap/120/1/10.1063/1.4954676}, volume = 120, year = 2016 }