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Conference Paper
Auto Phase Tracking for Regional Boosted-Beam in Beamforming Phase Array Antenna
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- Authors
- Seong-Mo Moon, Sohyeon Yun, Dong-Pil Chang, In-Bok Yom
- Issue Date
- 2019-08
- Citation
- Asia-Pacific Conference on Antennas and Propagation (APCAP) 2019, pp.420-421
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents a beamforming boosted-beam satellite (BBS) antenna based on a phased array technique. The presented BBS antenna is specifically designed to cover the whole Korea regions including the northern and southern areas. The proposed BBS antenna consists of waveguide feed network, beamforming circuits, waveguide circular polarizers, 19 radiation elements and a boosted-beam control panel. To maximize the flexible performance of the BBS antenna, boosted-beam mode is supported to meet the required high power signal due to bad weather conditions. The adjustable effective isotropic radiated power range was around 6 dB. There are total 19 beamforming units each configured by drive amplifier, phase shifter and attenuator. Also, one extra beamforming unit synchronized with the other 19 elements is additionally integrated just for changing regional boost-beam purpose. To change regional boost-beam, because the relative phase shift and amplitude values are controlled by control voltage from 0 V to 3 V in beamforming element control unit, it requires adaptive phase and amplitude tracker unit such as phase and amplitude discriminator to change boost region from nominal pattern for whole Korea region. In this paper, we introduced and verified adaptive phase tracking method by implement and measured beam pattern including normal beam (whole Korea region) and regional boost-beam.
- KSP Keywords
- 3 V, Adaptive phase, Beam pattern, Control Unit, Feed network, High power, Phase Shifter, Phase array antenna, Phase tracking, Phased array technique, Power Signal