Title :
Implementation of high performance and broadband crossover junction in butler matrix design
Author :
Gui Chao Huang;Magdy F Iskander;Mahbub Hoque;Steven R. Goodal;Timothy Bocskor
Author_Institution :
Hawaii Center for Advanced Communication (HCAC), College of Engineering, University of Hawaii, Honolulu, 96822, USA
fDate :
7/1/2015 12:00:00 AM
Abstract :
Directional networking provides several advantages including extended range, increase capacity, security and power efficiency over other communication networks using Omni-directional antenna. Recently, a narrow beam dual-pol long slot antenna array with 4-6 GHz operating frequency band was developed for directional networking [1]. To steer the main beam of the antenna array, Butler matrix was proposed to feed the antenna array with linear phase shifts in because of the low cost and simplicity advantages it provides. To reduce the size and improve the performance of the Butler matrix, a compact broadband crossover junction [2] was implemented in an 8×8 Butler matrix that operate in 4-6 GHz frequency band. In this paper the design of the 8×8 Butler Matrix is described and characteristic of a developed prototype are presented. It is shown that measured results on the developed prototype agreed very well with the simulated results over the entire band for 4-6 GHz.
Keywords :
"Butler matrices","Frequency measurement","Ports (Computers)","Broadband antennas","Couplers","Loss measurement","Insertion loss"
Conference_Titel :
Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on
DOI :
10.1109/APS.2015.7304914