Dielectric Horns Give Roots To Terahertz Antenna

Nov. 8, 2011
Thanks to growing interest in spectroscopy, imaging, and other applications, the terahertz (THz) band has been expanding. Designers find it challenging, however, to design antennas with good performance in terms of radiation efficiency ...

Thanks to growing interest in spectroscopy, imaging, and other applications, the terahertz (THz) band has been expanding. Designers find it challenging, however, to design antennas with good performance in terms of radiation efficiency and input impedance with optimal match to a typically low-power source. Recently, a dielectric semiconductor horn antenna etched on a high-permittivity and thick substrate was proposed by the following: Belen Andres-Garcia, Enrique Garcia-Muoz, and Daniel Segovia-Vargas from the University of Madrid; Sebastian Bauerschmidt, Stefan Malzer, Gottfried H. Dhler, and Sascha Preu from Germany's Max Planck Institute for the Science of Light; and Lijun Wang from China's Tsinghua University.

With this design, the researchers propose a new geometry for the design of antennas in the terahertz band. Based on a horn configuration, this structure is etched on a substrate and fed with a planar printed antenna. The semiconductor horn antenna is used to transmit electromagnetic radiation from 200 GHz to 3 THz. To increase system gain, it reduces energy distribution through the substrate by at least 8 dB in a 1:10 bandwidth. The latter is achieved with a broadband, log-spiral antenna. See "Gain Enhancement by Dielectric Horns in the Terahertz Band," IEEE Transactions On Antennas And Propagation, Sept. 2011, p. 3164.

Sponsored Recommendations

Wideband MMIC LNA with Bypass

June 6, 2024
Mini-Circuits’ TSY-83LN+ wideband, MMIC LNA incorporates a bypass mode feature to extend system dynamic range. This model operates from 0.4 to 8 GHz and achieves an industry leading...

Expanded Thin-Film Filter Selection

June 6, 2024
Mini-Circuits has expanded our line of thin-film filter topologies to address a wider variety of applications and requirements. Low pass and band pass architectures are available...

Mini-Circuits CEO Jin Bains Presents: The RF Engine of the 21st Century

June 6, 2024
In case you missed Jin Bains' inspiring keynote talk at the inaugural IEEE MTT-S World Microwave Congress last week, be sure to check out the session recording, now available ...

Selecting VCOs for Clock Timing Circuits A System Perspective

May 9, 2024
Clock Timing, Phase Noise and Bit Error Rate (BER) Timing is critical in digital systems, especially in electronic systems that feature high-speed data converters and high-resolution...