A Single-Layered Spoof-Plasmon-Mode Leaky Wave Antenna With Consistent Gain

作者：Kianinejad Amin^*; Chen Zhi Ning; Qiu Cheng Wei

来源：IEEE Transactions on Antennas and Propagation, 2017, 65(2): 681-687.

DOI：10.1109/TAP.2016.2633161

• Antenna radiation patterns
• beam steering
• leaky wave antennas (LWAs)
• periodic structures
• plasmons

A single-layered leaky wave antenna (SL-LWA) exploiting the groundless spoof plasmons (SPs) structure is presented and validated to achieve consistent scanning beam and broadside gain across a wide bandwidth. The antenna is composed of single-layered meander SP cells and coplanar waveguide to SP structure converters. The periodically arranged SP cells of the SL-LWA generate a radiating space harmonic with forward, backward, and broadside radiation against frequency change. The study and experimental validation show that the proposed SL-LWA provides the consistent gain variation less than 2.5 dB of scanning beams within the 10-dB reflection bandwidth of 10.4-24.5 GHz (or 80%). In addition, the proposed antenna offers the wideband broadside radiation with 1-dB gain variation within the frequency range of 16.5-17.2 GHz (or 4.2%). The method to design the antenna operating at desired frequencies is provided. Benefiting from the low-profile compactness and unprecedented performance, the proposed SL-LWA has promising potentials for applications in wireless systems.

• 出版日期2017-2