Design study of electronically steerable half-width microstrip leaky wave antennas

Compact leaky wave antenna using ferroelectric materials

“…Compared with air‐core LWA and dielectric‐core with low permittivity, the ASR has been improved from 10°/GHz, and 60°/GHz to 636°/GHz. In general, the unique features of ferroelectric materials based compact LWAs are (1) shorter length and (2) higher ASR.…”

“…The equivalent circuit model of individual SWCNT will be useful for future high-frequency nanocircuit applications. [1] Iijima S. Helical microtubules of graphitic carbon. Nature.…”

“…Leaky wave antenna (LWA) attracts tremendous attention for capable of electrical steering of the radiation beam . Traditional air‐core LWAs suffer from the long propagation wavelength, and thus large volume.…”

“…In addition, a broad frequency tuning band (FTB) is required for air‐core LWAs to achieve a wide angle scan. LWA with a 3 GHz (15–18 GHz) FTB has been reported to achieve of 30 degree scanning angle (SA) . A microstrip LWA showed a 143 degree SA with a 4.4 GHz FTB .…”

Closely coupled half-width leaky-wave antenna array

“…The backwardto-forward main beam scanning designs use the periodic structure in the half-width microstrip leaky-wave antenna [8]. The half-width microstrip leaky wave antennas with the beam steering ability use varactor diodes and lumped capacitors at radiating edge [9], [10]. The parasitic elements on the halfwidth leaky wave antenna affect the radiation patterns and extend the impedance bandwidth [11].…”