Title :
A V-band MMIC Self Oscillating Mixer Active Integrated Antenna Using a Push-Pull Patch Antenna
Author :
Choi, Wooyeol ; Cheon, Changyul ; Kwon, Youngwoo
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ.
Abstract :
In this paper, a V-band MMIC self oscillating mixer active integrated antenna using a push-pull patch antenna is presented. The SOM AIA is based on the coupled active parallel feedback oscillator. By using a push-pull patch antenna, the isolation between balanced RF input and in-phase local oscillation is established. Furthermore, since the push-pull patch antenna has very low radiation efficiency for the in phase signal injection, the LO radiation was efficiently suppressed. The circuit is fabricated using the 0.15mum pHEMT process on 100mum thick GaAs substrate. The local oscillation frequency is 58.46GHz. The LO radiation level is measured to be lower than -50dBm at distance of 1cm. The circuit shows about -18.9dB effective isotropic conversion gain at 1.54GHz IF
Keywords :
HEMT integrated circuits; III-V semiconductors; MMIC mixers; MMIC oscillators; active antennas; gallium arsenide; microstrip antennas; -18.9 dB; 0.15 micron; 1 cm; 1.54 GHz; 100 micron; 58.46 GHz; GaAs; LO radiation suppression; MMIC self oscillating mixer; V band; active integrated antenna; active parallel feedback oscillator; pHEMT process; phase signal injection; push-pull patch antenna; thick substrates; Antenna measurements; Coupling circuits; Feedback; Gallium arsenide; MMICs; Mixers; Oscillators; PHEMTs; Patch antennas; Radio frequency; MMIC; active integrated antenna; self oscillating mixer;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249692
