Title :
A 10GHz PHEMT Dielectric Resonator Oscillator
Author :
Mahyuddin, Nor Muzlifah ; Ain, Mohd Fadzil ; Hassan, Syed Idris Syed ; Singh, Mandeep
Author_Institution :
Sch. of Electr. & Electron. Eng., Universiti Sains Malaysia, Penang
Abstract :
In all microwave systems, oscillators represent the basic microwave energy source. The main problem in oscillator design is the phase noise. This paper will discuss the design and fabrication of a 10GHz parallel feedback type GaAs PHEMT dielectric resonator oscillator. It incorporated an E2000 series dielectric resonator from Tekelec Temex with a quality factor of 5000 at 10GHz. The coupling gap between the resonator and the microstrip lines can be adjusted to optimize the ratio of the loaded to the unloaded quality factor to give a better phase noise, where it can be achieved when an insertion loss of 9.5dB is obtained. Phase noise measurement and analysis on the effect of frequency pushing and pulling towards the oscillator has been done using a spectrum analyzer. The dielectric resonator oscillator was measured and exhibited an oscillation at 9.845 GHz with a phase noise of -115.5 dBc/Hz at 100 kHz
Keywords :
III-V semiconductors; Q-factor; dielectric resonator oscillators; gallium arsenide; high electron mobility transistors; noise measurement; phase noise; spectral analysers; 10 GHz; 100 kHz; 9.5 dB; 9.845 GHz; E2000 series dielectric resonator; GaAs; PHEMT; Tekelec Temex; dielectric resonator oscillator; microstrip lines; microwave energy source; microwave systems; phase noise analysis; phase noise measurement; quality factor; spectrum analyzer; Dielectric measurements; Fabrication; Feedback; Gallium arsenide; Microwave oscillators; Noise measurement; PHEMTs; Phase measurement; Phase noise; Q factor; Dielectric resonator oscillator; Phase noise;
Conference_Titel :
RF and Microwave Conference, 2006. RFM 2006. International
Conference_Location :
Putra Jaya
Print_ISBN :
0-7803-9744-4
Electronic_ISBN :
0-7803-9745-2
DOI :
10.1109/RFM.2006.331030
