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Proceedings Paper

A balanced wide-band amplifier for microwave applications
Author(s): Mircea Panzariu; Horia Lupescu; Ana Dumitrascu; Razvan D. Tamas
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Paper Abstract

Due to its better performance, high fiability and large power capability, balanced amplifier is one of the most popular designs used in narrow band applications. However, with a balanced amplifier in class A operation, the band-pass is still narrow with classical coupler [1]. In this paper, we propose a new method for widen the band-pass and linearity of the amplifier, by using two Lange couplers and by adding two drivers, so that small signal could be amplified [2], [3], [4], [5]. The proposed amplifier works in the 0.9 – 2.4 GHz band, with good performances. We also propose an A class X-band amplifier, with Wilkinson power divider used as a combiner and divider. The amplifier will operate at 9,5 GHz with Continuous Wave (C.W). The two methods were validated by simulating the balanced amplifier with Lange coupler and the balanced amplifier with Wilkinson power divider, in class A operation.

Paper Details

Date Published: 20 February 2015
PDF: 10 pages
Proc. SPIE 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII, 925835 (20 February 2015); doi: 10.1117/12.2070176
Show Author Affiliations
Mircea Panzariu, Politehnica Univ. of Bucharest (Romania)
Horia Lupescu, Politehnica Univ. of Bucharest (Romania)
Ana Dumitrascu, Constanta Maritime Univ. (Romania)
Razvan D. Tamas, Constanta Maritime Univ. (Romania)


Published in SPIE Proceedings Vol. 9258:
Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII
Ionica Cristea; Marian Vladescu; Razvan Tamas, Editor(s)

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