Articles | Volume 8
Adv. Radio Sci., 8, 167–173, 2010
https://doi.org/10.5194/ars-8-167-2010
Adv. Radio Sci., 8, 167–173, 2010
https://doi.org/10.5194/ars-8-167-2010

  01 Oct 2010

01 Oct 2010

Design and realization of a broadband single-side-band mixer with a very short settling time

S. Haßler1,*, T. Reichthalhammer1, and E. Biebl1 S. Haßler et al.
  • 1Fachgebiet Höchstfrequenztechnik, Technische Universität München, Munich, Germany
  • *now at: Siemens AG, Erlangen, Germany

Abstract. To achieve high range resolution in synthetic aperture radar imaging a frequency synthesizer with high bandwidth is a possible solution. To operate in the required frequency band an LF-signal usually has to be upconverted. In this paper we describe the design and realization of a broadband Single-Side-Band Mixer with a very short settling time between frequency steps of arbitrary length inside a high bandwidth. Compared to already existing SSB-Mixers, our novel concept has three major advantages: At first, the mixer could be used in combination with an arbitrary signal source. Due to a modular circuit concept it is possible to use the system for different input frequency ranges. Moreover, just by changing single modules, the output frequency-range can be adapted to individual requirements. Thirdly, as a main advantage, the system is able to generate a high frequency output span with a very fast settling time between frequency steps. Even with applied steps up to 400 MHz, the settling time remains below 3 μs, which is more than 5 times faster than the settling time of similar synthesizers.

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