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A single-layer wideband reflectarray antenna employing sub-wavelength phase-shifting elements is presented. The element is composed of double concentric square meander line rings and its size is a fifth of a wavelength. By changing the length of the meander line, a phase variation range of about 360° is achieved with an almost constant slop across the 9 to 11 GHz. Using this element, a 48 × 48 — element...
A newly designed pattern reconfigurable Fabry-Perot cavity antenna is presented in this paper. The reconfigurability is achieved by employing a phased array with a reconfigurable feed network as the source of the FPC antenna. The design can switch its main beam direction between ™10° and 10° with respect to the broadside direction from 5.36 GHz to 5.76 GHz. The realized gain of the proposed antenna...
A substrate-integrated waveguide (SIW) cavity-backed annular ring slot antenna with multiband multimode characteristics is proposed in this communication. The antenna consists of an SIW cavity and an annular slot on top surface as the radiator. Two patch-like radiation patterns and one monopolar radiation pattern at three different frequencies are excited by the single fed antenna. Moreover, each...
A novel reconfigurable partially reflective surface (PRS) antenna is presented in this paper. The beam scanning ability is realized by employing a reconfigurable PRS structure and a phased array as the source. The design achieves a beam switching between −15°, 0°, to 15° with respect to the broadside direction from 5.5 GHz to 5.7 GHz with the realized gains over 12 dBi. Good agreement between the...
A novel compact ultra-wideband (UWB) printed planar antenna with dual band-notched characteristics is proposed. The patch with gradual change structure produces a wide bandwidth from 2.8 to 12GHz. By employing a resonant I-shaped strip and etching a U-slot in the radiation patch on the front side, band-rejected filtering properties in the WiMAX/WLAN bands can be achieved. Experimental results show...
For non-adjustable fixed channel receiver systems, receiver sensitivity of products will be lower because of differences in coil and capacitor parameters, so assembly must be tested after welding and installing. Based on the antenna resonant principle and actual parameters test principle, measurement analysis system is designed. Frequency conversion output is achieved by using DDS and single-chip,...
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