Abstract
This paper presents a new design to realize a compact Rotman lens-fed antenna array. The lens-fed antenna has the form of two layers, which is a new approach to reducing the size of the Rotman lens. The approach is demonstrated at 24 GHz aiming for an automotive sensing radar. The lens consists of a top metal layer, a dielectric, a common ground, a dielectric, and a bottom metal layer, in sequential order. The layout of the lens body is placed on the bottom layer and the antennas are placed on the top layer. Both of them are electrically connected through slot transitions. This two-layer structure reduces not only the total size of the lens, but also the loss of the delay lines because the lines can be designed to be as short and straight as possible. The two-layer Rotman lens-fed antenna array is measured in terms of scattering parameters and beam patterns. From the scattering parameters, the power efficiencies of the beam port 1, 2, and 3 at 24 GHz are obtained as 32.3%, 48.5%, and 50.8%, respectively. The measured beam patterns show that the beam directions are -28.1°, 14.9°, 0°, 15.5°, and 28.6° and the beamwidths are 13.4° , 13.2° , 12.8°, 13.5°, and 13.0°. The measurements onfirm that the compact two-layer Rotman lens has been successfully demonstrated.
| Original language | English |
|---|---|
| Article number | 5654577 |
| Pages (from-to) | 460-466 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 59 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2011 Feb 1 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
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Compact two-layer rotman lens-fed microstrip antenna array at 24 GHz. / Lee, Woosung; Kim, Jaeheung; Yoon, Young Joong.
In: IEEE Transactions on Antennas and Propagation, Vol. 59, No. 2, 5654577, 01.02.2011, p. 460-466.Research output: Contribution to journal › Article
TY - JOUR
T1 - Compact two-layer rotman lens-fed microstrip antenna array at 24 GHz
AU - Lee, Woosung
AU - Kim, Jaeheung
AU - Yoon, Young Joong
PY - 2011/2/1
Y1 - 2011/2/1
N2 - This paper presents a new design to realize a compact Rotman lens-fed antenna array. The lens-fed antenna has the form of two layers, which is a new approach to reducing the size of the Rotman lens. The approach is demonstrated at 24 GHz aiming for an automotive sensing radar. The lens consists of a top metal layer, a dielectric, a common ground, a dielectric, and a bottom metal layer, in sequential order. The layout of the lens body is placed on the bottom layer and the antennas are placed on the top layer. Both of them are electrically connected through slot transitions. This two-layer structure reduces not only the total size of the lens, but also the loss of the delay lines because the lines can be designed to be as short and straight as possible. The two-layer Rotman lens-fed antenna array is measured in terms of scattering parameters and beam patterns. From the scattering parameters, the power efficiencies of the beam port 1, 2, and 3 at 24 GHz are obtained as 32.3%, 48.5%, and 50.8%, respectively. The measured beam patterns show that the beam directions are -28.1°, 14.9°, 0°, 15.5°, and 28.6° and the beamwidths are 13.4° , 13.2° , 12.8°, 13.5°, and 13.0°. The measurements onfirm that the compact two-layer Rotman lens has been successfully demonstrated.
AB - This paper presents a new design to realize a compact Rotman lens-fed antenna array. The lens-fed antenna has the form of two layers, which is a new approach to reducing the size of the Rotman lens. The approach is demonstrated at 24 GHz aiming for an automotive sensing radar. The lens consists of a top metal layer, a dielectric, a common ground, a dielectric, and a bottom metal layer, in sequential order. The layout of the lens body is placed on the bottom layer and the antennas are placed on the top layer. Both of them are electrically connected through slot transitions. This two-layer structure reduces not only the total size of the lens, but also the loss of the delay lines because the lines can be designed to be as short and straight as possible. The two-layer Rotman lens-fed antenna array is measured in terms of scattering parameters and beam patterns. From the scattering parameters, the power efficiencies of the beam port 1, 2, and 3 at 24 GHz are obtained as 32.3%, 48.5%, and 50.8%, respectively. The measured beam patterns show that the beam directions are -28.1°, 14.9°, 0°, 15.5°, and 28.6° and the beamwidths are 13.4° , 13.2° , 12.8°, 13.5°, and 13.0°. The measurements onfirm that the compact two-layer Rotman lens has been successfully demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=79551633333&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79551633333&partnerID=8YFLogxK
U2 - 10.1109/TAP.2010.2096380
DO - 10.1109/TAP.2010.2096380
M3 - Article
AN - SCOPUS:79551633333
VL - 59
SP - 460
EP - 466
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 2
M1 - 5654577
ER -