Miniaturisation of planar microwave circuits by using resonant-type left-handed transmission lines
Miniaturisation of planar microwave circuits by using resonant-type left-handed transmission lines
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DOI：
10.1049/iet-map:20050302
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发表时间：
2007-02-01
影响因子：
1.7
通讯作者：
Martin, F.
中科院分区：
文献类型：
--
作者：
Gil, M.;Bonache, J.;Martin, F.
它表明，平面微波电路和组件，如阻抗逆变器或功率分配器，除其他外，可以通过使用人工左手传输线在他们的设计紧凑。这种尺寸减小的关键是通过单个单元结构在宽裕度上控制这些线的电特性（即电长度和图像阻抗）的可能性。它由一个微带线部分与一个系列的电容性间隙蚀刻在导体带和加载一个互补的开口环谐振器蚀刻在接地平面。最近报道的人工线模型被用作所需器件设计的第一步。为了证明该方法的可行性，提供了几个原型器件的例子，即90度阻抗逆变器和几个功率分配器具有不同的拓扑结构。通过在常规低损耗微波衬底中实现器件，已经实现了50%的尺寸减小（与常规器件相比），但是如果在诸如低温共烧陶瓷或多芯片模块沉积等的先进技术上制造器件，则可以获得更高水平的微波化。
It is demonstrated that planar microwave circuits and components such as impedance inverters or power dividers, among others, can be compacted by using artificial left-handed transmission lines in their designs. Key to this size reduction is the possibility to control the electrical characteristics of these lines (namely electrical length and image impedance) over wide margins by means of a single cell structure. It consists of a microstrip line section with a series capacitive gap etched in the conductor strip and loaded with a complementary split rings resonator etched in the ground plane. A recently reported model of the artificial line is used as a first step in the design of the desired devices. To demonstrate the viability of the approach, several prototype device examples are provided, that is a 90 degrees impedance inverter and several power dividers with different topologies. A 50% size reduction (as compared to conventional devices) has been achieved by implementing the devices in conventional low loss microwave substrates, but further levels of miniaturisation can be obtained if the devices are fabricated on advanced technologies such as low temperature co-fired ceramic or multi chip module-deposited, among others.