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This paper presents the concept, design and fabrication of beam-scanning array antenna operating at Y-band (230–245 GHz) for light-weight collision avoidance applications. The array consists of over 40 radiating sub-arrays, generating a very narrow beam of less than 3° in azimuth and about 10° in elevation with ±25° azimuth steering capability. Slot-coupled cavity-backed patch arrays are used as the...
In this article, a novel frequency beam-scanning phased array antenna operating at Y-band is presented. The proposed antenna is a travelling-wave antenna, with cavity-backed patch arrays as the radiating elements. The array generates a very narrow beam (less than 2.5°) at the broadside of the antenna with ±25° steering capability. A prototype of the antenna is fabricated using silicon micromachining...
This paper describes a novel travelling-wave frequency beam-scanning array antenna operating at Y-band. The proposed antenna is composed of over 40 cavity-backed patch arrays as the radiating elements, with a total of 588 patch elements. The array generates a very narrow beam (HPBW of less than 2.5°) at the broadside of the antenna with ±25° steering capability. A prototype of the proposed antenna...
Capacitively coupled microplasmas in dielectric cavities have a range of applications from VUV lighting sources for surface treatment to radical production. Due to the large surface-to-volume ratio of these devices, the wall mediated dynamics of plasma transport are important to the uniformity and confinement of the plasma. For example, there may be applications where a plume of ionized gas is desired...
Low-pressure microwave-excited microplasmas have a wide variety of potential applications, including their use as UV photoionization sources for mass spectrometry. Resonant microwave microstrip architectures can be used to initiate and sustain these microplasmas. When operated in a windowless configuration, the plasma plume exiting from an aperture in the plasma confinement structure contains a complex...
A novel cavity-backed coplanar waveguide (CBCPW) to rectangular waveguide transition having a 2.5D geometry compatible with micromachining fabrication technique is presented. This transition makes use of a short-circuited pin (as opposed to a suspended probe) in conjunction with resonant sections of CPW line over the broad wall of a reduced height waveguide segment to facilitate impedance matching...
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