A new overlay coupler for direct digital modulator in GaAs HBT

A new overlay coupler for direct digital modulator in GaAs HBT

A new overlay coupler has been realized at millimeter-wave frequency with an area that is less than one-half that of the Lange coupler. It was used to construct a binary phase-shift keying (BPSK) modulator, employing balanced reflection topology, in which the HBTs acted as switches. It was shown tha...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on microwave theory and techniques 2004-08, Vol.52 (8), p.1830-1835
Hauptverfasser: Yi Sun, Freundorfer, A.P.
Format: Artikel
Sprache:eng
Schlagworte:
Binary phase shift keying
Digital modulation
Frequency
Gallium arsenide
Heterojunction bipolar transistors
Phase modulation
Phase shift keying
Reflection
Switches
Topology
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A new overlay coupler has been realized at millimeter-wave frequency with an area that is less than one-half that of the Lange coupler. It was used to construct a binary phase-shift keying (BPSK) modulator, employing balanced reflection topology, in which the HBTs acted as switches. It was shown that the BPSK modulator could be modulated at 1 Gb/s at 28 GHz.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2004.831566