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Compact multiband antenna fed with wideband coupled line impedance transformer for improvement of impedance matching
Author(s) -
Mulla Sajeed,
Deshpande Shraddha S.
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30738
Subject(s) - impedance matching , hfss , antenna tuner , electronic engineering , quarter wave impedance transformer , electrical impedance , gsm , wideband , engineering , umts frequency bands , return loss , electrical engineering , antenna (radio) , acoustics , microstrip antenna , telecommunications , antenna factor , physics , damping factor
The design of the Compact Multiband Antenna (CMA) fed with Wideband Coupled Line Impedance transformer (CMA‐WCLIT) over a wide frequency range is proposed. The wide band coupled line impedance transformer is used for improvement of impedance matching. The performance of the CMA‐WCLIT is demonstrated by comparing its input impedances with antenna impedances of the conventional CMA. Calculated input impedances in HFSS, for respective bands are Z in1 = 51 – j 0.33 Ω , Z in2 = 48 – j 4.5 Ω, Z in3 = 49 – j 2.4 Ω. Comparing to CMA, the return loss (RL) of CMA‐WCLIT for GSM and WIFI bands are reduced by 6dB and 19dB respectively, however there is no further reduction of RL for UMTS‐FDD band. A prototype is simulated (HFSS), manufactured and tested, the simulated results validates the procedure of proposed design. The proposed antenna can be operated for GSM‐900,UMTS‐FDD, and WiFi.