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Active phase shifter module for satellite communications at Ka-band
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- Authors
- Jong Moon Lee, Ji Hun Bae, Nak Sun Sung, Cheol Sig Pyo
- Issue Date
- 2004-06
- Citation
- IEEE Antennas and Propagation Society International Symposium 2004, pp.2859-2862
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, the design and fabrication approach for a lightweight, 4 input/1 output active phase shiner module (APM) for Ka-band satellite communication is presented. Each channel is combined using the Wilkinson power combiner which is on the alumina substrate (/spl epsiv//sub r/ = 9.9, thickness = 5 mil). The APM is composed of voltage variable attenuators, 5-bit phase shifters, SSPA and DC circuit. Each gain of the 4-channel APM is about 12.5 dB at initial phase state and variations of all the gains are within /spl plusmn/1 dB, when the phase states are changed. Measured phase error and P/sub 1/ dB of the APM are average /spl plusmn/4.4/spl deg/ per bit and 22 dBm, respectively.
- KSP Keywords
- Alumina substrate, DC circuit, Design and fabrication, Fabrication approach, Initial phase, Ka-band Satellite communication, Power combiner, active phase shifter, phase error, phase state