Sheetlike Waveguide for 2.4 GHz and 5 GHz Bands

24 GHz Radar Sensor

The authors from IMST and DuPont have developed in joint project a RADAR demonstrator operating in the 24 GHz band. The sensor is designed to be used in vehicles as driver assistance system. FMCW method is utilized to measure distances up to 30 m or even more and velocity of obstacles around the car. Especially safety enhancement systems like collision warning and mitigation but also comfort fe...

Coexistence between fixed service operating in 71-76 GHz, 81-86 GHz and 92-94 GHz bands and passive services

Substrate Integrated Waveguide Horn Antenna for 60 Ghz Band

The paper presents the design and fabrication of a H-plane substrate integrated waveguide (SIW) horn antenna. The antenna operates at 60 GHz band and is equipped with a SIW-to-WR15 transition. Experimental results prove that the antenna achieves the gain of 11.5 dBi and the impedance bandwidth of 14 % for the reflection coefficient less than -10 dB. The antenna was designed with the help of CST...

Fading characteristics for indoor wireless channels at 5 GHz unlicensed bands

The paper reports on experiments undertaken at the University of Wollongong to characterise fading profiles of indoor wireless channels at the 5 GHz bands. The measurements were undertaken at different locations around the campus with results recorded for post-processing to calculate the Rician k-factor, the level crossing rate and the average fade duration.

Interference mitigation techniques for use by high altitude platform stations in the 27.5-28.35 GHz and 31.0-31.3 GHz bands