2009 · 30 citations · 6 references
EngineeringAutomotive EngineeringElectrical EngineeringAntennasMicrowave EngineeringRange ImprovementAntenna DesignMicrowave AntennasPlanar AntennasRadar AntennasRadar SystemsSlot AntennasMicrostrip Slot AntennasSlot Array AntennasSlotted Waveguide AntennasSubstrate Integrated CircuitsSubstrate Integrated Waveguide AntennasSubstrate Integrated Waveguide Slot AntennasSubstrate Integrated WaveguidesWaveguide Slot Antennas
A modified substrate integrated waveguide (SIW) slot array antenna has been proposed for the low cost 24 GHz Doppler radar system. All radiating slots are connected in series using a short circuit ended SIW; therefore, its radiation beam can be steered with frequency. The modified antenna with meandering structure is proposed to enhance the scanning range. The physical slot spacing is kept at about half free space wavelength, while the electrical spacing is about 540° at the center frequency of 24 GHz. A broadside radiation is achieved at 24 GHz frequency and a ±30° continuous scanning range is experimentally confirmed with the frequency band from 23 GHz to 25 GHz.
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Simulation and experiment on SIW slot array antennas
Li Yan, Wei Hong, Guang Hua et al. · IEEE Microwave and Wireless Components Letters · 2004 · 560 citations