An Efficient SiGe Double-Balanced Mixer with a Differential Rat-Race Coupler

Herman Jalli Ng; Martin Jahn; Reinhard Feger; Christoph Wagner; Andreas Stelzer

An Efficient SiGe Double-Balanced Mixer with a Differential Rat-Race Coupler

Herman Jalli Ng, Martin Jahn, Reinhard Feger, Christoph Wagner, Andreas Stelzer

Department of RF-Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

Abstract

This paper describes an efficient, fully differential mixer intended to be used in a 77-GHz frequency-modulated continuous wave radar transceiver, which is realized in a Silicon-Germanium bipolar technology. The double-balanced mixer is equipped with a differential rat-race coupler, which uses a differential transmission line with a circumference of only one wavelength and provides an LO-RF isolation better than 30 dB over a wide frequency range. The mixer draws a very low quiescent current of 7.5 µA from a supply voltage of 3.3V. The measured voltage conversion loss is 0.5 dB and 0.3 dB at an LO power of 0dBm and 2 dBm, respectively. The measured input referred 1-dB compression point is −3 dBm at an LO power of 0 dBm and −2.2dBm if the LO power is increased to 2 dBm.

Original language	English
Title of host publication	Proc. of the European Microwave Integrated Circuits Conference (EuMIC) 2013
Number of pages	4
Publication status	Published - Oct 2013

Fields of science

202019 High frequency engineering
202029 Microwave engineering
202033 Radar technology

JKU Focus areas

Mechatronics and Information Processing

Cite this

@inproceedings{336d4a10cd3c470a93eec812db14624a,

title = "An Efficient SiGe Double-Balanced Mixer with a Differential Rat-Race Coupler",

abstract = "This paper describes an efficient, fully differential mixer intended to be used in a 77-GHz frequency-modulated continuous wave radar transceiver, which is realized in a Silicon-Germanium bipolar technology. The double-balanced mixer is equipped with a differential rat-race coupler, which uses a differential transmission line with a circumference of only one wavelength and provides an LO-RF isolation better than 30 dB over a wide frequency range. The mixer draws a very low quiescent current of 7.5 µA from a supply voltage of 3.3V. The measured voltage conversion loss is 0.5 dB and 0.3 dB at an LO power of 0dBm and 2 dBm, respectively. The measured input referred 1-dB compression point is −3 dBm at an LO power of 0 dBm and −2.2dBm if the LO power is increased to 2 dBm.",

author = "Ng, \{Herman Jalli\} and Martin Jahn and Reinhard Feger and Christoph Wagner and Andreas Stelzer",

year = "2013",

month = oct,

language = "English",

booktitle = "Proc. of the European Microwave Integrated Circuits Conference (EuMIC) 2013",

}

TY - GEN

T1 - An Efficient SiGe Double-Balanced Mixer with a Differential Rat-Race Coupler

AU - Ng, Herman Jalli

AU - Jahn, Martin

AU - Feger, Reinhard

AU - Wagner, Christoph

AU - Stelzer, Andreas

PY - 2013/10

Y1 - 2013/10

N2 - This paper describes an efficient, fully differential mixer intended to be used in a 77-GHz frequency-modulated continuous wave radar transceiver, which is realized in a Silicon-Germanium bipolar technology. The double-balanced mixer is equipped with a differential rat-race coupler, which uses a differential transmission line with a circumference of only one wavelength and provides an LO-RF isolation better than 30 dB over a wide frequency range. The mixer draws a very low quiescent current of 7.5 µA from a supply voltage of 3.3V. The measured voltage conversion loss is 0.5 dB and 0.3 dB at an LO power of 0dBm and 2 dBm, respectively. The measured input referred 1-dB compression point is −3 dBm at an LO power of 0 dBm and −2.2dBm if the LO power is increased to 2 dBm.

AB - This paper describes an efficient, fully differential mixer intended to be used in a 77-GHz frequency-modulated continuous wave radar transceiver, which is realized in a Silicon-Germanium bipolar technology. The double-balanced mixer is equipped with a differential rat-race coupler, which uses a differential transmission line with a circumference of only one wavelength and provides an LO-RF isolation better than 30 dB over a wide frequency range. The mixer draws a very low quiescent current of 7.5 µA from a supply voltage of 3.3V. The measured voltage conversion loss is 0.5 dB and 0.3 dB at an LO power of 0dBm and 2 dBm, respectively. The measured input referred 1-dB compression point is −3 dBm at an LO power of 0 dBm and −2.2dBm if the LO power is increased to 2 dBm.

M3 - Conference proceedings

BT - Proc. of the European Microwave Integrated Circuits Conference (EuMIC) 2013

ER -