Abstract
Integrated antennas have become the attractive solution as the electromagnetic (EM) interface for mm-Wave and terahertz ICs. However, on-chip antennas lying at the interface between two different dielectrics (such as air and substrate) can channel most of its power into multiple nonradiative surface-wave modes, reducing efficiency drastically. In this paper, we consider the following problem: given a dielectric substrate, what is the theoretical optimal 2-D surface-current configuration that collectively suppresses surface waves and maximizes radiation efficiency with the desirable radiation pattern? This paper also discusses demonstrative examples of a circuit-EM codesign approach to realize the approximation of such current configurations. Measurement results of radiating arrays in CMOS at mm-Wave frequencies (250-300 GHz) are presented and compared with theoretical predictions.
| Original language | English (US) |
|---|---|
| Article number | 7491288 |
| Pages (from-to) | 1976-1988 |
| Number of pages | 13 |
| Journal | IEEE Transactions on Microwave Theory and Techniques |
| Volume | 64 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2016 |
All Science Journal Classification (ASJC) codes
- Radiation
- Condensed Matter Physics
- Electrical and Electronic Engineering
Keywords
- Beamforming
- CMOS
- EIRP
- distributed active radiation
- near field
- on-chip antenna
- power combining
- power generation
- radiation
- substrate modes
- terahertz (THz)