The advanced design of a 10 × 1 linear antenna array system with the capa-bility of frequency tunability using GT3-23001 liquid crystal (LC) is pro-posed. The design for this reconfigurable wideband antenna array...The advanced design of a 10 × 1 linear antenna array system with the capa-bility of frequency tunability using GT3-23001 liquid crystal (LC) is pro-posed. The design for this reconfigurable wideband antenna array for 5G ap-plications at Ka-band millimeter-wave (mmw) consists of a double layer of stacked patch antenna with aperture coupled feeding. The bias voltage over LC varies from 0 V to 10.6 V to achieve a frequency tunability of 1.18 GHz. The array operates from 25.3 GHz to 33.8 GHz with a peak gain of 19.2 dB and a beamwidth of 5.2<span style="white-space:nowrap;">°</span> at 30 GHz. The proposed reconfigurable antenna ar-ray represents a real and efficient solution for the recent and future mmw 5G networks. The proposed antenna is suitable for 5G base stations in stadiums, malls and convention centers. It is proper for satellite communications and radars at mmw.展开更多
Liquid crystals are pivotal innovations in the field of tunable materials.However,in the millimeter wave band,the relatively low tunability of liquid crystal limits its applicability.A design method utilizing metamate...Liquid crystals are pivotal innovations in the field of tunable materials.However,in the millimeter wave band,the relatively low tunability of liquid crystal limits its applicability.A design method utilizing metamaterial characteristics to enhance the tunability of a liquid crystal is proposed.This design method is based on two theoretical models.Both models embed metamaterial structures into a liquid crystal,thus tailoring a new tunable material,namely,a meta-liquid crystal.By appropriately designing the metamaterials to meet the corresponding conditions derived in different models,the tunability of the meta-liquid crystal can be higher than that of the original liquid crystal.An application of beam scanning is provided to verify this method.Two beam steerable antenna arrays are designed,fabricated and investigated.The beam scanning range of the meta-liquid crystal antenna array is much wider than that of the original liquid crystal antenna array,which confirms the enhancement of tunability.Consequently,this work fills the research gap in improving the performance of liquid crystals in the millimeter wave band.Simultaneously,a bridge is established between two significant materials:tunable materials and metamaterials.The results imply that the performance of tunable materials can be manipulated by metamaterials.展开更多
文摘The advanced design of a 10 × 1 linear antenna array system with the capa-bility of frequency tunability using GT3-23001 liquid crystal (LC) is pro-posed. The design for this reconfigurable wideband antenna array for 5G ap-plications at Ka-band millimeter-wave (mmw) consists of a double layer of stacked patch antenna with aperture coupled feeding. The bias voltage over LC varies from 0 V to 10.6 V to achieve a frequency tunability of 1.18 GHz. The array operates from 25.3 GHz to 33.8 GHz with a peak gain of 19.2 dB and a beamwidth of 5.2<span style="white-space:nowrap;">°</span> at 30 GHz. The proposed reconfigurable antenna ar-ray represents a real and efficient solution for the recent and future mmw 5G networks. The proposed antenna is suitable for 5G base stations in stadiums, malls and convention centers. It is proper for satellite communications and radars at mmw.
文摘Liquid crystals are pivotal innovations in the field of tunable materials.However,in the millimeter wave band,the relatively low tunability of liquid crystal limits its applicability.A design method utilizing metamaterial characteristics to enhance the tunability of a liquid crystal is proposed.This design method is based on two theoretical models.Both models embed metamaterial structures into a liquid crystal,thus tailoring a new tunable material,namely,a meta-liquid crystal.By appropriately designing the metamaterials to meet the corresponding conditions derived in different models,the tunability of the meta-liquid crystal can be higher than that of the original liquid crystal.An application of beam scanning is provided to verify this method.Two beam steerable antenna arrays are designed,fabricated and investigated.The beam scanning range of the meta-liquid crystal antenna array is much wider than that of the original liquid crystal antenna array,which confirms the enhancement of tunability.Consequently,this work fills the research gap in improving the performance of liquid crystals in the millimeter wave band.Simultaneously,a bridge is established between two significant materials:tunable materials and metamaterials.The results imply that the performance of tunable materials can be manipulated by metamaterials.
