Title :
Integrated modified rectangular loop slot antenna on substrate lenses for millimeter- and submillimeter-wave frequencies mixer applications
Author :
Otero, Pablo ; Eleftkeriades, G.V. ; Mosig, Juan R.
Author_Institution :
Electromagn. & Acoust. Lab., Fed. Inst. of Technol., Lausanne, Switzerland
fDate :
10/1/1998 12:00:00 AM
Abstract :
A coplanar waveguide (CPW)-fed rectangular-loop slot antenna with built-in tuning and DC-return capabilities on extended hemispherical lenses is examined. The proposed configuration is scalable up to the submillimeter-wave frequencies. For designing and analyzing the impedance characteristics of the proposed antenna, a multilayer method of moments (MoM) solver has been developed based on the mixed potential integral equation (MPIE) formulation. The corresponding patterns through the lens are obtained using geometrical optics and the surface equivalence principle. Three models have been simulated and one of them has been built and tested at 65 GHz. The integrated antenna exhibits tuning capability, rotationally symmetric patterns, high directivity, good Gaussian coupling efficiency, and a reasonable bandwidth. In addition, computed results agree well with measurements and are used to characterize the input impedance and pattern behavior of the antenna
Keywords :
antenna feeds; antenna radiation patterns; antenna testing; circuit tuning; coplanar waveguides; directive antennas; electric impedance; electric potential; integral equations; loop antennas; method of moments; millimetre wave antennas; millimetre wave integrated circuits; millimetre wave mixers; slot antennas; 65 GHz; DC-return; EHF; Gaussian coupling efficiency; MPIE; MoM solver; antenna pattern behavior; bandwidth; geometrical optics; hemispherical lenses; high directivity; impedance characteristics; input impedance; integrated modified rectangular loop slot antenna; measurements; millimeter-wave frequency; mixed potential integral equation; mixer applications; multilayer method of moments; rotationally symmetric patterns; submillimeter-wave frequency; substrate lenses; surface equivalence principle; tuning; Coplanar waveguides; Frequency; Lenses; Moment methods; Nonhomogeneous media; Optical waveguides; Rectangular waveguides; Slot antennas; Surface impedance; Tuning;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
