7-8 GHz serrodyne modulator in SiGe for MIMO signal generation
conference paper
An 8-bit 360◦ sawtooth modulated phase shifter is used to apply very small frequency offsets to RF signals between 7 and 8 GHz. Offsets between 6 Hz and ∼10MHz can be obtained. Such frequency offsets can be used to generate orthogonal signals, which are required in e.g. MIMO applications. Each undesired frequency component is suppressed to below -30 dBc. The phase modulator is realized in a 250 nm SiGe BICMOS technology.
TNO Identifier
954565
ISSN
15508781
ISBN
9781479936229
Publisher
Institute of Electrical and Electronics Engineers IEEE
Article nr.
6978531
Source title
36th IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2014, 19-22 October 2014, La Jolla, CA, USA
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