| Presentation | 2017-12-19 A study on Frequency Identification of Received RF Signal in Wideband Direct RF Undersampling Frequency Sensor Tomoyuki Furuichi, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, with the popularization of wireless IoT (Internet of Things), real time frequency sensing technology for multi bands (920 MHz band, 2.4 GHz band, 5-6 GHz band) used by wireless IoT devices is required. A direct RF undersampling frequency sensor for a cognitive radio that directly samples an RF signal have been reported as a method of sensing multiple frequency bands all at once and real time using a single receiver. However, since the total of the measurement bandwidths can’t exceed 1/2 of the sampling frequency, widen measurement bandwidth is desired. We proposed a direct RF undersampling frequency sensor with a measured frequency bandwidth exceeding 1/2 of the sampling frequency, which proposes a method of specifying the frequency of the received RF signal by switching the sampling frequency more than once, and its clock frequency switching conditions were examined. By applying this condition, numerical calculation shows that the receiving RF frequency can be specified by approximately once switching the clock frequency. Further demonstration experiment using prototype S/H IC was performed, and it was confirmed that this proposal is effective also in the received waveform actually obtained. Further experiments were performed using prototype S/H IC, and it was confirmed that this proposal is effective with the received waveform actually obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Undersampling / Microwaves / Receiver / Cognitive radio / Frequency identification / Direct RF / Digital RF |
| Paper # | MW2017-144 |
| Date of Issue | 2017-12-12 (MW) |
| Conference Information | |
| Committee | MW |
|---|---|
| Conference Date | 2017/12/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Masahiro Muraguchi(TUC) |
| Vice Chair | Yoshinori Kogami(Utsunomiya Univ.) / Hiroshi Okazaki(NTTdocomo) / Kenichi Tajima(Mitsubishi Electric) |
| Secretary | Yoshinori Kogami(Tokyo Inst. of Tech.) / Hiroshi Okazaki(HITACHI) / Kenichi Tajima |
| Assistant | Satoshi Ono(Univ. of Electro-Comm.) / Mizuki Motoyoshi(Tohoku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study on Frequency Identification of Received RF Signal in Wideband Direct RF Undersampling Frequency Sensor |
| Sub Title (in English) | |
| Keyword(1) | Undersampling |
| Keyword(2) | Microwaves |
| Keyword(3) | Receiver |
| Keyword(4) | Cognitive radio |
| Keyword(5) | Frequency identification |
| Keyword(6) | Direct RF |
| Keyword(7) | Digital RF |
| 1st Author's Name | Tomoyuki Furuichi |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Mizuki Motoyoshi |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 3rd Author's Name | Suguru Kameda |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Noriharu Suematsu |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2017-12-19 |
| Paper # | MW2017-144 |
| Volume (vol) | vol.117 |
| Number (no) | MW-366 |
| Page | pp.pp.13-18(MW), |
| #Pages | 6 |
| Date of Issue | 2017-12-12 (MW) |