| Presentation | 2012-07-19 Measurement of Complex Near EM-fields by Using 6-port Fabricated with Broadband Hybrids Takayuki NAMBU, Yoshio KAMI, Fengchao XIAO, Kimitoshi MURANO, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A method for measuring complex electromagnetic (EM) fields near a circuit board is described. Six-port circuit technology is developed as an alternative way of vector network analyzer (VNA) for estimating the scattering matrix of a device under test (DUT) from measuring powers at four output ports. In this report, the technology is applied to the measurement of EM fields near circuit boards. Two magnetic probes are connected to input ports, where equivalent voltage sources are expressed in phasor due to magnetic fields picked up by the probes. Powers at four output-port loads can be formulated in four unknown terms of magnitudes and phases of the sources, though such equation would fall into an ill-condition problem when solving the unknown terms. To avoid the ill condition, the six-port network with applying some design conditions is proposed. The magnitude ratio and the phase difference between two magnetic fields near a ground slit under a microstrip line are estimated and compared with those directly obtained by a VNA. The results are in a good agreement. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Complex Near EM-fields / 6-port network / sctterting matrix / 90° hybrid / 180° hybrid |
| Paper # | EMCJ2012-36 |
| Date of Issue |
| Conference Information | |
| Committee | EMCJ |
|---|---|
| Conference Date | 2012/7/12(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 | Electromagnetic Compatibility (EMCJ) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Measurement of Complex Near EM-fields by Using 6-port Fabricated with Broadband Hybrids |
| Sub Title (in English) | |
| Keyword(1) | Complex Near EM-fields |
| Keyword(2) | 6-port network |
| Keyword(3) | sctterting matrix |
| Keyword(4) | 90° hybrid |
| Keyword(5) | 180° hybrid |
| 1st Author's Name | Takayuki NAMBU |
| 1st Author's Affiliation | University of Electro-Communications() |
| 2nd Author's Name | Yoshio KAMI |
| 2nd Author's Affiliation | University of Electro-Communications |
| 3rd Author's Name | Fengchao XIAO |
| 3rd Author's Affiliation | University of Electro-Communications |
| 4th Author's Name | Kimitoshi MURANO |
| 4th Author's Affiliation | Tokai University |
| Date | 2012-07-19 |
| Paper # | EMCJ2012-36 |
| Volume (vol) | vol.112 |
| Number (no) | 130 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |