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- Title
New design of wideband microstrip branch line coupler using T-shape and open stub for 5G application.
- Authors
Abdulbari, Ali Abdulateef; Abdul Rahim, Shand Kamal; Abidin Abd Aziz, Mohamad Zoinol; Tan, K. G.; Noordin, N. K.; Nor, M. Z. M.
- Abstract
A new design o f wideband branch-line coupler (BLC) using T-shape with open stub microstrip line is proposed. The branch line coupler is integrated with low and high impedance /J4 transmission lines to achieve the comparatively compact size of (27.2 nun x 16.5 nun). Operating the bandwidth in simulated of BLC from 2.9 to 4 GHz is obtained 30.22% with a frequency center of 3.5 GHz . Meanwhile, the measured bandwidth of the BLC is cover from 2.8 GHz to 4.22 GHz is equal 33.40% at the center frequency 3.55 GHz respectively. The BLC simulated has low isolation and high retum loss of -29.28 dB and -30.69 dB at the center frequency 3.5 GHz. Whereas, the measured result has a simple difference in the retum loss and isolation are - 27.43 dB and -24.46 dB at the frequency 3.55 GHz respectively. This BLC design has a good coupling factor of -2.97 and inseition loss of -3.65 dB. Fmiheimore, it obtains an excellent amplitude and phases diffei-ent between two output of ±0.1 and 93.6°±3.4° \v'ith high peifonnance. TI1ere is a good agi-eeinei1t betweei1 the simulated result and the meas1u·ed 1-esult. Tiiis branch line coupler design used for 5 G applications for fotme wireless conununication systems.
- Subjects
MICROSTRIP transmission lines; 5G networks; ELECTRIC lines; MICROSTRIP filters
- Publication
International Journal of Electrical & Computer Engineering (2088-8708), 2021, Vol 11, Issue 2, p1346
- ISSN
2088-8708
- Publication type
Article
- DOI
10.11591/ijece.v11i2.pp1346-1355