Title :
A self-oscillating active filtering antenna
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Kaohsiung, Kaohsiung, Taiwan
Abstract :
A self-oscillating active filtering antenna is presented in this work. In the positive feedback path of an oscillator, a two-way filtering power divider is incorporated. One of the output port of the power divider is electromagnetically coupled to an antenna, and the other output port is used for feedback. A 2.45-GHz self-oscillating active filtering antenna with 18 mW DC power consumption has been fabricated and measured for verification. The measured phase noise at 600-kHz offset frequency is -112 dBc/Hz. 50-dB suppression of the second harmonic is also achieved.
Keywords :
UHF antennas; active antennas; microstrip antennas; power dividers; resonator filters; frequency 2.45 GHz; frequency 600 kHz; phase noise; positive feedback path; power 18 mW; second harmonic suppression; self-oscillating active filtering antenna; two-way filtering power divider; Antenna measurements; Antennas; Band-pass filters; Frequency measurement; Microwave filters; Power dividers; Active antennas; Filtering antennas; Filtering power divider; Oscillators;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026680
