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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...
The Molded Interconnect Device technology (MID) in combination with Laser Direct Structuring (LDS) offers the possibility to design electrical and mechanical components on three-dimensional surfaces to increase functionality, level of integration and to reduce costs. For example, transmission lines, antennas, switches and connectors can be integrated inside the covers of cellular phones or the cases...
The idea of this paper is to use simple symmetrical structures offering the possibility of pattern diversity or beam switching by using various feed points. Therefore, this paper focuses on a Sierpinski shaped patch antenna, offering the possibility to adjust the main beam of the antenna in three directions by using three different feed points in one structure. In contrast to the investigations in...
The use of the molded interconnect device technology combined with the laser direct structuring technology exhibits the potential of designing electrical and mechanical components on three-dimensional surfaces to increase functionality, level of integration and to reduce costs. When taking advantage of these technologies especially in the design of RF devices, a precise knowledge of the electromagnetic...
This paper presents a novel design of an equilateral triangular patch antenna providing two diverse patterns at nearly the same resonance frequency (fRes ap 5.4 GHz), which result from the excitation of two different eigenmodes by switching two diodes ON or OFF. In this design just a single feed point is needed for both excitations and no additional DC network is necessary. The concept is validated...
This paper presents fully differential up-and down-conversion mixers manufactured in a triple well 45 nm standard CMOS process for low voltage UWB TX and RX applications. The proposed circuits both employ the transistor bulk terminal for signal injection. While the RX mixer uses the bulk for switching via threshold voltage modulation, the TX mixer applies the baseband signal to the bulk. Both circuits...
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