A novel ultrawideband microwave differential phase shifter

A novel ultrawideband microwave differential phase shifter

Wideband microwave phase shifters are usually constructed using cascaded coupled-fine sections connected together at their far ends. By utilizing the unique frequency-independent quadrature property of symmetric couplers, a new class of phase shifter is proposed. The use of ultrawideband couplers in...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1997-08, Vol.45 (8), p.1249-1252
Hauptverfasser: Minnaar, F.V., Coetzee, J.C., Joubert, J.
Format: Artikel
Sprache:eng
Schlagworte:
Capacitance measurement
Data mining
Gallium arsenide
MESFETs
Microwave devices
Parasitic capacitance
Performance evaluation
Phase shifters
Shape measurement
Ultra wideband technology
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Zusammenfassung:Wideband microwave phase shifters are usually constructed using cascaded coupled-fine sections connected together at their far ends. By utilizing the unique frequency-independent quadrature property of symmetric couplers, a new class of phase shifter is proposed. The use of ultrawideband couplers in its realization results in a device which offers greater freedom with respect to bandwidth and ripple. The tendency of symmetrical networks to cancel small errors due to manufacturing tolerances is also exploited in order to improve its high-frequency performance.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.618415