Mwrf 2066 Dialectric Resonator 0
Mwrf 2066 Dialectric Resonator 0
Mwrf 2066 Dialectric Resonator 0
Mwrf 2066 Dialectric Resonator 0
Mwrf 2066 Dialectric Resonator 0

Dielectric Resonator Antennas Conquer Microstrip Issues in mm-Wave Apps

Nov. 7, 2015
By leveraging micromachining technology, silicon can be used to fabricate a millimeter-wave DRA.

At millimeter-wave frequencies, microstrip antennas can suffer from both high conductor and substrate losses, thereby deteriorating antenna radiation efficiency. To solve this problem, lossy planar metallic antennas can be replaced with high-permittivity dielectric resonator antennas (DRAs). Fabrication of a DRA would involve a silicon or gallium-arsenide (GaAs) substrate. To demonstrate, a group of researchers from Egypt, Saudi Arabia, and Belgium introduced a cylindrical DRA that’s suitable for millimeter-wave on-chip applications. The proposed DRA is fabricated from a single high-resistivity silicon wafer via micromachining technology.

The geometrical parameters of the proposed structured were optimized using ANSYS’s High Frequency Structure Simulator (HFSS) software. Subsequently, six-inch, double-sided, polished, high-resistivity silicon wafers were used to fabricate the DRA. The measured return-loss values demonstrated agreement with the simulated results.

The DRA’s measured resonance frequency was 59 GHz, which was close to the simulated value of 59.5 GHz. A 10-dB impedance bandwidth of 2.23 GHz was achieved, equating to 3.78% at 59 GHz. Average gain was about 6.5 dBi across the bandwidth, with a gain of 7 dBi at the resonance frequency. In addition, a radiation efficiency of 79.35% was achieved at 60 GHz. See “Micromachined On-Chip Dielectric Resonator Antenna Operating at 60 GHz,” IEEE Transactions on Antennas and Propagation, August 2015, p. 3410.

Sponsored Recommendations

Frequency Modulation Fundamentals

March 14, 2024
The development of crystal-clear FM communications was an innovation of genius and toil. Utilized today in applications such as radar, seismology, telemetry and two-way radios...

44 GHz Programmable Signal Generator

March 14, 2024
The Mini-Circuits SSG-44G-RC is a 0.1 to 44 GHz signal source with an RF output range of -40 to +17 dBm with fine resolution. This model supports CW and pulsed (? 0.5 ?s) outputs...

Webinar: Introduction to OTA Measurement for mmWave and Sub-THz

Feb. 19, 2024
Join Jeanmarc Laurent, a leading expert from MilliBox, for an exclusive live webinar showcasing a complete Over-the-Air (OTA) testing system setup. In this immersive session, ...

Using a CMT VNA with Socket Server

Feb. 19, 2024
This application note describes use of a software application CMT Socket Server which is distributed and supported by Aphena Ltd. Please email [email protected] regarding purchase...