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In this paper, a dual-frequency substrate integrated waveguide (SIW) cavity backed slot antenna has been presented. The unique slot structure includes a pair of slot stubs connected at the center of the radiating slot which helps to create an additional hybrid mode resonance at the higher frequency end. As a result, the antenna resonates at two different frequencies 8.96 GHz and 15.84 GHz with a bandwidth...
This paper presents the integrated antenna of a frequency modulated constant wave (FMCW) radar chip operating in the 79 GHz band. Besides the transmitting and receiving mode of the chip, an alternative to characterize the antenna reflection coefficient, gain, and radiation pattern are implemented on chip. The multiple options are established by using the focused ion beam (FIB) process in combination...
A continuously electrically tunable composite right/left-handed leaky-wave antenna based on liquid crystal is presented for Ka-band applications. The antenna features one dimensional beam steering capabilities for a fixed operation frequency. Simulations, vectorial network analysis, and far field measurements of a built prototype are presented in this work together with the detailed fabrication process...
Due to the increasing demand of high data throughput and compact size of wireless communication devices, miniaturized multiple-input-multiple-output (MIMO) antennas are highly desirable. In addition, multiband operation is highly desirable for multitasking and covering different wireless standards. This paper presents a two element semi-ring multiband compact MIMO antenna having a total size of 32×42×1...
Nanometer-scale devices known as Self-Switching Diodes represent a new interesting component for Terahertz applications. It is shown for the first time than the use of ion implantation rather than etching to define an asymmetric nanochannel lead to an improved device rectification, thus higher responsivity. In this paper, we report on the first integration of implanted Gallium nitride self-switching...
Reconfigurability in mm-wave circuits and systems become desired in recent years. In this work, the parallel-beam driven actuator is modified in two ways to enhance the tuning capability. In cooperated with the proposed actuator, two V-band frequency-tunable front-end circuits are demonstrated. The bandstop filter is fabricated in 0.35-µm CMOS-MEMS process, providing five-band switching within 51–63...
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