FG Mikrowellentechnik

5 Items

Recent Submissions
24 GHz low-power switch-channel CMOS transceiver for wireless localization

Zhang, Tao ; Hamidian, Amin ; Shu, Ran ; Subramanian, Viswanathan (2014)

A 24 GHz low-power transceiver is designed, fabricated, and characterized using 130 nm complementary metal-oxide semiconductor (CMOS) process. The designed transceiver is targeted for frequency-modulated-continuous-wave (FMCW) wireless local positioning. The transceiver includes four switchable receiving channels, one transmitting channel and local-oscillator generation circuitries. Several pow...

Evaluation of GaN-HEMT power amplifiers using BST-based components for load modulation

Arnous, Mhd. Tareq ; Wiens, Alex ; Saad, Paul ; Preis, Sebastian ; Zhang, Zihui ; Jakoby, Rolf ; Böck, Georg (2014)

In this paper, the concept of load-modulated power amplifiers (PAs) is studied. Two GaN-HEMT power amplifiers (PAs), targeted for high efficiency at maximum and output back-off (OBO) power levels, are designed, implemented, and tested across 1.8–2.2 GHz. The load modulation in the first design is realized by tuning the shunt capacitors in the output matching network. A novel method is employed ...

Design and analysis of 80-W wideband asymmetrical Doherty amplifier

Bathich, Khaled ; Böck, Georg (2014)

This paper presents the analysis and design of a wideband asymmetrical Doherty amplifier. The frequency response of the output combining network of the Doherty amplifier with arbitrary back-off level configuration is analyzed. Other bandwidth-limiting factors were discussed and analyzed as well. A number of performance enhancement techniques were taken into consideration to obtain high and flat...

A 60 GHz fully differential LNA in 90 nm CMOS technology

Malignaggi, Andrea ; Hamidian, Amin ; Böck, Georg (2013)

The present paper presents a fully differential 60 GHz four stages low-noise amplifier for wireless applications. The amplifier has been optimized for low-noise, high-gain, and low-power consumption, and implemented in a 90 nm low-power CMOS technology. Matching and common-mode rejection networks have been realized using shielded coplanar transmission lines. The amplifier achieves a peak small-...

Efficient technique for ultra broadband, linear power amplifier design

Sayed, Ahmed ; Preis, Sebastian ; Böck, Georg (2012)

In this paper, a 10 W ultra-broadband GaN power amplifier (PA) is designed, fabricated, and tested. The suggested design technique provides a more accurate starting point for matching network synthesis and better prediction of achievable circuit performance. A negative-image model was used to fit the extracted optimum impedances based on source-/load-pull technique and multi-section impedance m...