A low-noise front-end with beamsteering capability at 35 GHz

Author

Grubinger, Hannes ; Barth, Helmut ; Vahldieck, Ruediger

Author_Institution

ETH Zurich, Zurich

fYear

2007

fDate

9-12 Oct. 2007

Firstpage

1594

Lastpage

1597

Abstract

This paper presents a novel implementation of a 35- GHz front-end for beamsteering applications. The achieved low noise figure of only 2.5 dB enables reception of very low-power signals. The 35-GHz input signal is downconverted to 5 GHz. A controllable phase shift is added by utilizing an injection locked voltage controlled oscillator (VCO) to drive the mixer. The phase noise of the local oscillator´s signal is reduced by using a cavity reference oscillator with very low phase noise for locking the VCO. A highly compact prototype has been build on RT/Duroid E_r = 10.2 substrate and serves as test case for a future LTCC implementation.

Keywords

mixers (circuits); phase noise; reference circuits; voltage-controlled oscillators; VCO; beamsteering capability; cavity reference oscillator; controllable phase shift; frequency 35 GHz; injection locked voltage controlled oscillator; low-noise front-end; mixer; noise figure; noise figure 2.5 dB; Array signal processing; Butler matrix; Frequency; Injection-locked oscillators; Microwave radiometry; Noise measurement; Phase noise; Q factor; Resonance; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. European

Conference_Location

Munich

Print_ISBN

978-2-87487-001-9

Type

conf

DOI

10.1109/EUMC.2007.4405514

Filename

4405514