1-Bit Reconfigurable Unit Cell for Ka-Band Transmitarrays

Abstract

International audienceThis letter presents an electronically reconfigurable, linearly polarized unit cell for transmitarray applications in Ka-band. A 1-bit phase resolution (namely with two phase states 0 ° and 180 °) is obtained using two p-i-n diodes mounted on a slot-loaded patch antenna. The design, realization, and experimental characterization in a standard waveguide simulator are reported. The measured insertion losses only reach 1.09 and 1.29 dB for the two-phase states, respectively, with a 3-dB transmission bandwidth of about 11.2

Circularly-polarized reconfigurable transmitarray in Ka-band

“…These antennas are connected to each other with a metallized via passing through a hole etched in the ground plane placed on one of the two intermediate layers. The waveguide measurements showed an IL of 1.0 dB and a 3-dB bandwidth of 14.6% [3]. When switching the two p-i-n diodes a phase shift of 180 • has been demonstrated over the whole frequency band.…”

“…The building-block of the proposed transmitarray is the 1bit unit-cell working in linear polarization studied in [3]. The dielectric stack-up is formed by two substrates (Rogers Duroid RT6002) and one bonding film (Arlon CuCLAD 6700), as shown in Fig.…”

“…Different reconfiguration technologies have been proposed: MEMS switches, microfluidics, ferroelectric varactor diodes and p-i-n diodes. The latter warranties reduced Insertion Loss (IL) and high reliability [2], [3].…”

AOA Estimation with EM Lens-Embedded Massive Arrays - Invited Paper

“…In fact, thanks to the proposed schemes exploiting a large number of antennas packed into a small area, data rates up to several Gbit per second can be attained [1]. Consequently, new applications can be enhanced from the possibility to integrate multiantenna systems with laser-like beams in portable devices, thus avoiding expensive dedicated infrastructures [2] . Among all the opportunities, the idea of personal radars has been recently proposed, where mobile users are equipped with mm-wave massive arrays performing beamsteering for the reconstruction of indoor environments [3], [4].…”

Design and Analysis of a Silicon-Based Pattern Reconfigurable Antenna Employing an Active Element Pattern Method

“…Thus, the implementation of a pattern reconfigurable antenna with a low profile can alleviate those constraints. To date, many pattern reconfigurable antennas [1,2,3,4,5] have been developed, and reconfigurable antennas are commonly implemented using variodes [6,7] and PIN diodes [1,2]. Compared with the variodes, PIN diodes, and other technologies, radio frequency (RF) micro-electromechanical systems (MEMS) switches possess many attractive advantages, such as high linearity, high quality factors, and almost no Please check the sections highlight in yellow in “the whole text” as we have made little modification.…”