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This contribution presents a feasibility study to use silver nanowires (AgNWs) for the realization of optically transparent patch antennas at mm-wave frequencies. First, the AgNW coating is characterized in the radio frequency range up to 40 GHz by measuring insertion losses of transmission lines. By means of simulations the electrical conductivity is determined to 7MS/m at a layer thickness of 0...
This paper presents an optically transparent analog frontend of an RFID transponder which is suitable for integration on a solar cell. First, insertion losses of different configurations of microstrip lines (MS) and ground plane made of grid lines are discussed. With these knowledge a meshed analog frontend consisting of a modulator and a demodulator unit is developed. Its optical transparency is...
This contribution presents an optically transparent and circularly polarized patch antenna to be integrated on a solar cell. The whole configuration is suitable to be use in a wireless sensor node acting as a communication interface and a power source. The antenna consisting of grid lines is studied concerning the impedance behavior due to the applied mesh. A single fed truncated corners meshed patch...
This contribution presents optically transparent microstrip patch antennas which are designed using meshed conductors. The influences on antenna performance of meshing both patch and ground plane are studied. Important geometrical parameters which have the main impact on the operating frequency and bandwidth are pointed out. The investigation shows that a necessity of reducing the patch size and/or...
This contribution presents optically transparent microstrip patch antennas which are designed using meshed conductors. The influences on antenna performance of meshing both patch and ground plane are studied. Important geometrical parameters which have the main impact on the operating frequency and bandwidth are pointed out. The investigation shows that a necessity of reducing the patch size and/or...
This paper presents a compact design of a conformal log.-periodic four arm antenna with feeding network integrated on a single conical MID. The antenna structure incorporates two decoupled, predominantly linearly polarized radiators. Both radiators provide an input matching of better than −8 dB over a frequency range from 4.5GHz to 11GHz. The antenna radiation patterns are characterized by a front-to-back...
This paper presents the design of a dual-polarized log.-periodic four arm antenna bent on a conical MID substrate. The bending of a planar structure in free space is highlighted and the resulting effects on the input impedance and radiation characteristic are analyzed. The subsequent design of the UWB compliant prototype is introduced. An adequate agreement between simulated and measured performance...
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