A low loss RC I/Q generator for vector-sum applications

A low loss RC I/Q generator for vector-sum applications

This letter proposes a method to reduce the loss of multi-stage RC polyphase filters (PPFs), which are capable of generating in-phase and quadrature (I/Q) output signals in a broadband bandwidth. The proposed two-stage PPF operation was evaluated in the high-precision vector-sum phase shifter. The s...

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Veröffentlicht in:International journal of electronics and communications 2019-10, Vol.110, p.152852, Article 152852
Hauptverfasser: Momeni, Mahdi, Moezzi, Mohsen
Format: Artikel
Sprache:eng
Schlagworte:
[formula omitted] generator
Gain error
Low loss
Phase error
Polyphase filter
Vector-sum phase shifter
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Zusammenfassung:This letter proposes a method to reduce the loss of multi-stage RC polyphase filters (PPFs), which are capable of generating in-phase and quadrature (I/Q) output signals in a broadband bandwidth. The proposed two-stage PPF operation was evaluated in the high-precision vector-sum phase shifter. The simulation results show that the replacement of the conventional PPF-I with the proposed PPF does not affect the phase shift performance of the phase shifter, while the overall loss will be reduced about 1.4 dB.
ISSN:1434-8411
1618-0399
DOI:10.1016/j.aeue.2019.152852