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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lei Wang Yong Xin Guo Yong Lian Chun Huat Heng |
| Copyright Year | 2012 |
| Description | Author affiliation: National University of Singapore, Singapore, Singapore (Lei Wang; Yong Xin Guo; Yong Lian; Chun Huat Heng) |
| Abstract | Narrow-band phased-array transmitters provide an efficient way of obtaining higher power through spatial combining and achieving higher transmitter EIRP. They also provide beamforming and beam-steering capabilities [1]. However, the commonly used phase shifter or LO phase-shifting techniques at RF become less attractive for 3-to-5GHz UWB due to their lossy, bulky and narrowband characteristics. On the other hand, True-Time-Delay (TTD)-based beamforming transmitters employed at baseband have been popularly adopted due to UWB's inherent digitally intensive nature [2]. However owing to the limited achievable delay resolution and delay accuracy, the reported phase resolution is normally limited to 10°. This work introduces a 3-to-5GHz UWB beamforming system spanning from −45° to 90° phase range with 1° phase resolution. The fine delay resolution is achieved through a Vernier delay line without the need of advanced technology. The delay is calibrated with a ΔΣ DLL. |
| Starting Page | 444 |
| Ending Page | 446 |
| File Size | 644867 |
| Page Count | 3 |
| File Format | |
| ISBN | 9781467303767 |
| ISSN | 01936530 |
| e-ISBN | 9781467303774 |
| DOI | 10.1109/ISSCC.2012.6177083 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-02-19 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Delay Array signal processing Radio transmitters Calibration CMOS integrated circuits Solid state circuits |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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