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Conference Paper
Design and Measurement Method of Small Cassegrain Antenna for Long-Distance Transmission
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- Authors
- Jung-Nam Lee, Kwang-Seon Kim, Heon Kook Kwon, Soek-Bong Hyun
- Issue Date
- 2022-05
- Citation
- Global Symposium on Millimeter-Waves & Terahertz (GSMM) 2022, pp.173-175
- Language
- English
- Type
- Conference Paper
- Abstract
- A sub-THz Cassegrain antenna for long-distance transmission was designed, manufactured, and measured. We designed the main reflector to have a diameter of 30 mm to obtain a gain of 30 dBi or more and a relatively wider beam width than a general Cassegrain antenna. The proposed antenna has a gain of 36.8 dBi and a beam width of 2.5° at 245 GHz. The received power level and radiation pattern were measured by configuring a measurement environment to measure the performance of the sub-THz antenna. The commercial horn antenna and the proposed Cassegrain antenna were compared and measured. The transmitter consists of an analog signal generator (ASG) and an up-converter (UC), and a commercial horn antenna with 24 dBi gain at 245 GHz is attached to the upconverter. The receiver consists of a signal analyzer (SA) and a down-converter (DC), and the proposed Cassegrain antenna is attached to the down-converter. We compared the measured and simulated results to obtain reliable measurement results without using an anechoic chamber.