Title :
Coplanar waveguide balanced amplifier using bipolar junction transistors and backed ground-plane hybrids
Author :
Akkaraekthalin, Prayoot ; Jongjitaree, Sangchai ; Vivek, Vech
Author_Institution :
Dept. of Electr. Eng., King Mongkut´´s Inst. of Technol., Bangkok, Thailand
Abstract :
This research proposes a new balanced amplifier based on a coplanar waveguide (CPW) structure with conductor backed ground-plane hybrids. The amplifier has been designed and built by utilizing BJTs on a microwave substrate. The experimental results of the proposed amplifier agree very well with simulation. The amplifier gain of ~7 dB and the large bandwidth of ⩾600 MHz have been achieved at the operating frequency of 1.8 GHz. These results show the feasibility of applying the CPW balanced amplifier with backed ground-plane hybrids in microwave and millimeter-wave integrated circuits and systems
Keywords :
MMIC amplifiers; UHF amplifiers; bipolar transistor circuits; coplanar waveguide components; differential amplifiers; hybrid integrated circuits; millimetre wave amplifiers; substrates; 1.8 GHz; BJT; CPW structure; MMIC amplifier; UHF balanced amplifier; bipolar junction transistors; conductor-backed ground-plane hybrids; coplanar waveguide structure; microwave balanced amplifier; microwave integrated circuits; microwave substrate; millimeter-wave balanced amplifier; millimeter-wave integrated circuits; Broadband amplifiers; Coplanar waveguides; Distributed parameter circuits; MMICs; Microwave amplifiers; Microwave integrated circuits; Power transmission lines; Telephony; Transmission line theory; Waveguide junctions;
Conference_Titel :
TENCON 2001. Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology
Print_ISBN :
0-7803-7101-1
DOI :
10.1109/TENCON.2001.949688
