Title :
Fully Integrated PHEMT Voltage Controlled Oscillator with Very High Tuning Bandwidth
Author :
Megej, A. ; Beilenhoff, K. ; Hartnagel, H.L.
Author_Institution :
Institut fÿr Hochfrequenztechnik, Technische Universitÿt Darmstadt, MerckstraÃ\x9fe 25, D-64283 Darmstadt, Germany. E-mail: megej@tu-darmstadt.de
Abstract :
Design concepts of fully monolithically integrated VCOs are presented that include special solutions for increasing the bandwidth of operation. Realised buffered VCO MMICs deliver RF power between 11.2 and 15.5 dBm over the frequency range from 4.6 to 6.1 GHz. The relative bandwidth ¿f/fm is more than 27%, which is one of the highest values ever achieved with MMIC-VCOs using diode tuning.
Keywords :
Bandwidth; Circuit optimization; Circuit synthesis; MMICs; PHEMTs; Radio frequency; Semiconductor diodes; Tuning; Voltage-controlled oscillators; Wideband;
Conference_Titel :
Microwave Conference, 2000. 30th European
Conference_Location :
Paris, France
DOI :
10.1109/EUMA.2000.338688
