Title :
Design and Development of High Frequency Passive and Active Micromachined Antennas
Author_Institution :
Centre for Appl. Res. in Electron., Indian Inst. of Technol., New Delhi
Abstract :
This paper presents methodology for the design and development of passive and active micromachined antennas operating in the microwave and millimeter wave frequency region. The passive antenna design is based on dividing the circuit into bulk feed line, micromachined line to bulk feed line transition and membrane supported micromachined antenna. Each region is modeled using full wave electromagnetic simulation software HFSS. In the active antenna, the two-port membrane supported micromachined antenna is connected in positive feedback path of an MMIC amplifier chip using bulk feed lines. The fabricated micromachined passive antenna element resonated at 34.2 GHz. This antenna exhibited a bandwidth of 1.4 GHz for VSWR<2.0. The measured 3-dB E-plane and H-plane beam widths are 65-70 degrees that agrees fairly well with the simulated results. The initial active antenna oscillated at 35.64 GHz with 47.2 dBm power and showed a clean spectrum.
Keywords :
MMIC amplifiers; antenna feeds; dividing circuits; micromachining; micromechanical devices; microwave antennas; millimetre wave antennas; MMIC amplifier chip; antenna feed line; bandwidth 1.4 GHz; bulk feed lines; dividing circuit; frequency 34.2 GHz; frequency 35.64 GHz; full wave electromagnetic simulation software HFSS; high frequency active micromachined antennas; high frequency passive micromachined antennas; positive feedback; Antenna feeds; Biomembranes; Design methodology; Electromagnetic modeling; Electromagnetic scattering; Frequency; Microwave antennas; Microwave theory and techniques; Millimeter wave circuits; Millimeter wave technology;
Conference_Titel :
Industrial and Information Systems, First International Conference on
Conference_Location :
Peradeniya
Print_ISBN :
1-4244-0322-7
DOI :
10.1109/ICIIS.2006.365652
