Topic
Phased array
About: Phased array is a research topic. Over the lifetime, 19428 publications have been published within this topic receiving 229231 citations. The topic is also known as: Phased Array Radar, PAR.
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Patent•
10 Dec 2010
TL;DR: In this article, a remote device powering module, system and method for providing RF power to an electronic device located in a bounded area is described, where the RF power is converted by the receiver to direct-voltage to be provided to the electronic device.
Abstract: A remote device powering module, system and method for providing RF power to an electronic device located in a bounded area. The remote device powering module comprises a phased array antenna and is connected to a source to convert the power to an electric signal and to apply a phase reference to the electrical signal. The electrical signal is shifted with a shifting module and phased array antenna that comprises a plurality of radiating elements generates and transmits RF power via RF waves using the phase reference and the shifted phase. The RF power is then converted by the receiver to direct-voltage to be provided to the electronic device.
210 citations
TL;DR: In this article, a stepped-septum polarizer was designed that is capable of at least 26 dB of isolation over a 20 percent frequency band, which can be used to excite high purity left or right circular, as well as tilted linear polarizations in a phased array of square waveguides.
Abstract: A stepped-septum polarizer has been designed that is capable of at least 26 dB of isolation over a 20 percent frequency band. The three-port device may be used to excite high purity left or right circular, as well as tilted linear polarizations in a phased array of square waveguides.
210 citations
03 Jul 2011
TL;DR: A conformal mm-wave phased array antenna design and packaging integration to provide low loss solution and flexibility for platform integration is presented.
Abstract: 60GHz technology utilizes world wide exempt 5–9GHz bandwidth to provide multi-gigabit high throughput wireless communication in WPAN and WLAN applications. One of the key challenges to enable 60GHz technology is developing mm-wave phased array antenna design and packaging integration with mm-wave ICs. This paper presents a conformal mm-wave phased array antenna design and packaging integration to provide low loss solution and flexibility for platform integration.
209 citations
TL;DR: A new method for decoupling phased‐array coils without overlapping the nearest coil pairs is offered, based on the assumption that any n‐element phased array can be decoupled by a 2n‐port interface system between phased array and preamplifiers.
Abstract: In classical MRI phased-array design, optimal coil overlapping is used to minimize coupling between nearest-neighbor coils, and low input impedance preamplifiers are used to isolate the relatively weak coupling between non-nearest neighbors. However, to make the complex sensitivities of phased-array coils sufficiently distinct in parallel spatially-encoded MRI, it is desirable to have no overlapping between coils. Also, if phased arrays are used as transmit coils in MRI, one can no longer rely on the low input impedance of the preamplifiers for decoupling. Here a coupling and decoupling theory is introduced to provide a better understanding of the relations between coupled and uncoupled signals in the MRI phased array, and to offer a new method for decoupling phased-array coils without overlapping the nearest coil pairs. The new decoupling method is based on the assumption that any n-element phased array can be decoupled by a 2n-port interface system between phased array and preamplifiers. The detailed analysis and the experimental results show that a four-port interface can be used to decouple a two-element phased array. Furthermore, the four-port interfaces can serve as building blocks to construct a 2n-port decoupling interface. This new method allows one to place the coil elements anywhere that could optimize parallel spatial encoding without concern for coupling between the coils. The method can also be used for phased-array transmit coils.
209 citations
TL;DR: The design of a novel practical 28 GHz beam steering phased array antenna for future fifth generation mobile device applications is presented and the impacts of user’s hand effects are investigated.
Abstract: The design of a novel practical 28 GHz beam steering phased array antenna for future fifth generation mobile device applications is presented in this communication. The proposed array antenna has 16 cavity-backed slot antenna elements that are implemented via the metallic back casing of the mobile device, in which two eight-element phased arrays are built on the left- and right-side edges of the mobile device. Each eight-element phased array can yield beam steering at broadside and gain of >15 dBi can be achieved at boresight. The measured 10 dB return loss bandwidth of the proposed cavity-backed slot antenna element was approximately 27.5–30 GHz. In addition, the impacts of user’s hand effects are also investigated.
209 citations