| Presentation | 1997/7/25 Digital-Control Beamforming by Microwave Signal Processing : Key to Satellite Onboard Phased Array T. OHIRA, Y. SUZUKI, H. OGAWA, A. MINAKAWA, F. ISHITSUKA, N. IWASAKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A new concept "digital-control microwave signal processing" is proposed. Signal processing is done in the microwave frequency range, while the processing is controlled by digital means. A proof-of-concept satellite onboard beamforming network is deigned and fabricated. A prototype beamforming network for exciting 64-beam 32-element phased array is integrated in a volume of 2600 cc. It features the beamforming and steering architecture which controls amplitude and phase of each radiator. It employs wafer-scale MMICs, 32 x 64 3-D cross interconnection, and 2-mm pitch very fine coaxial jacks and plugs. By using a computer controlled network analyzer and variable voltage supplies, BFN amplitude and phase are accurately adjusted with residual enor of 0.04 dB and 0.33 degrees r.m.s. for the 32 output ports. Since the developed BFN is digital control but does not require high-speed DACs, it will be a potential candidate for adaptive/intelligent antennas as well as satellite onboard phased array transponders. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Transponder / Phased-array / Beamforming / Microwave Signal Processing / Wafer-Scale MMIC |
| Paper # | CQ97-28 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 1997/7/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Digital-Control Beamforming by Microwave Signal Processing : Key to Satellite Onboard Phased Array |
| Sub Title (in English) | |
| Keyword(1) | Transponder |
| Keyword(2) | Phased-array |
| Keyword(3) | Beamforming |
| Keyword(4) | Microwave Signal Processing |
| Keyword(5) | Wafer-Scale MMIC |
| 1st Author's Name | T. OHIRA |
| 1st Author's Affiliation | NTT Wireless Systems Laboratories() |
| 2nd Author's Name | Y. SUZUKI |
| 2nd Author's Affiliation | NTT Wireless Systems Laboratories |
| 3rd Author's Name | H. OGAWA |
| 3rd Author's Affiliation | NTT Wireless Systems Laboratories |
| 4th Author's Name | A. MINAKAWA |
| 4th Author's Affiliation | NTT Optoelectronics Laboratories |
| 5th Author's Name | F. ISHITSUKA |
| 5th Author's Affiliation | NTT Optoelectronics Laboratories |
| 6th Author's Name | N. IWASAKI |
| 6th Author's Affiliation | NTT Optoelectronics Laboratories |
| Date | 1997/7/25 |
| Paper # | CQ97-28 |
| Volume (vol) | vol.97 |
| Number (no) | 190 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |