Title :
A 21-27GHz self-shielded 4-way power-combining PA balun
Author :
Cheung, Tak Shun D ; Long, John R. ; Tretiakov, Y.V. ; Harame, D.L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
Abstract :
A monolithic 4-way power combining balun facilitates the implementation of 21 GHz to 27 GHz power amplifiers using silicon transistors. The combiner transforms a 50 Ω output to four 13 Ω loads with 3% mismatch at 0.9 dB power loss, using a novel symmetric, self-shielding design. This also enhances the magnetic coupling coefficient (k>0.85) and reduces substrate loss and skin effect at mm-wave frequencies.
Keywords :
MMIC power amplifiers; baluns; coupled circuits; power combiners; 0.9 dB; 13 ohm; 21 to 27 GHz; 50 ohm; magnetic coupling coefficient; monolithic balun; power amplifiers; power-combining PA balun; self-shielded multiple-way balun; skin effect reduction; substrate loss reduction; symmetric self-shielding design; transformer combiner; Bandwidth; Coils; Couplings; Impedance matching; Microelectronics; Power amplifiers; Power combiners; Power generation; Silicon; Skin effect;
Conference_Titel :
Custom Integrated Circuits Conference, 2004. Proceedings of the IEEE 2004
Print_ISBN :
0-7803-8495-4
DOI :
10.1109/CICC.2004.1358901
