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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sanghyo Lee Jae-Hyoung Park Hong-Teuk Kim Jung-Mu Kim Yong-Kweon Kim Youngwoo Kwon |
| Copyright Year | 2003 |
| Description | Author affiliation: Sch. of Electr. Eng., Seoul Nat. Univ., South Korea (Sanghyo Lee; Jae-Hyoung Park; Hong-Teuk Kim; Jung-Mu Kim; Yong-Kweon Kim; Youngwoo Kwon) |
| Abstract | A low-loss broadband reflection-type phase shifter (RTPS), showing constant phase shift from 15 to 45 GHz, was developed using MEMS technology. The analog phase shifter consists of two cascaded reflection-type phase shifters for 1:3 bandwidth. Air-gap overlay CPW couplers were employed for low-loss 3 dB coupling, and bridge-type MEMS variable capacitors were used for low-loss reflective terminations. The fabricated phase shifter shows the average insertion loss of 3.63 dB, and rms phase error of 3.7/spl deg/ from 15 to 45 GHz. Compared with the similar RTPS using GaAs PHEMT varactor diodes, much lower loss is observed together with improved bandwidth. |
| Starting Page | 1493 |
| Ending Page | 1496 |
| File Size | 245228 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780376951 |
| ISSN | 0149645X |
| DOI | 10.1109/MWSYM.2003.1210419 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-06-08 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Micromechanical devices Phase shifters Bandwidth Air gaps Coplanar waveguides Couplers Capacitors Termination of employment Insertion loss Gallium arsenide |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electrical and Electronic Engineering Radiation |
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