| Autor: |
M. Yarleque, Rafael D. Cerna |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
2015 IEEE International Wireless Symposium (IWS 2015). |
| DOI: |
10.1109/ieee-iws.2015.7164630 |
| Popis: |
This paper describes the design and implementation process of a wideband 8×8 Butler Matrix for beamforming networks in the AWS and PCS 1900 MHZ bands. In order to obtain a system able to operate in the frequency range of 1710 MHz to 2155 MHz, compact wideband branch-line hybrids, Schiffman phase shifters, parallel Schiffman phase shifters and no crossovers were used to implement the wideband 8×8 Butler Matrix. The final operation range for the 8×8 Butler Matrix is 1.65 GHz to 2.3 GHz and 2.4 GHz to 2.6 GHz. Finally, an 8-element linear array of printed Quasi-Yagi antennas was introduced in the system to verify the beamforming functionality of the 8×8 Butler Matrix. Measured radiation patterns show that the 8×8 Butler Matrix is able to provide adequate phase difference and uniform amplitude to the antenna array in order to function as a beamforming network in the frequency range of interest. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
