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Rectenna circuit elements, circuits, and techniques for enhanced efficiency wireless power transmission or ambient RF energy harvesting

A transmission line and circuit technology, applied in the field of rectenna circuit components, can solve problems such as rapid drop

Active Publication Date: 2015-10-28
NAT UNIV OF SINGAPORE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Likewise, once the input RF power exceeds the breakdown voltage of diode D1, the RF to DC PCE of this rectenna drops rapidly

Method used

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  • Rectenna circuit elements, circuits, and techniques for enhanced efficiency wireless power transmission or ambient RF energy harvesting
  • Rectenna circuit elements, circuits, and techniques for enhanced efficiency wireless power transmission or ambient RF energy harvesting
  • Rectenna circuit elements, circuits, and techniques for enhanced efficiency wireless power transmission or ambient RF energy harvesting

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Embodiment Construction

[0049] In this disclosure, a description of a given element, or a consideration or use of a particular element number in a particular figure, or a reference thereto in corresponding illustrative material, may be included in another figure or a description associated therewith. The same, equivalent, or similar element or element number identified in the indeterminate material. The use of " / " in a drawing or associated text is understood to mean "and / or" unless otherwise indicated. Statements herein of specific values ​​or ranges of values ​​are understood to include or be statements of approximate values ​​or ranges of values, for example within + / - 20%, + / - 15%, + / - 10%, or + / - 5% .

[0050] The term "set" as used herein corresponds to or is defined to conform to known mathematical definitions (e.g., to correspond to Chapter 11 "Properties of Finite Sets" of An Introduction to Mathematical Reasoning: Numbers, Sets, and Functions (as in Section 140) non-empty finite-element o...

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Abstract

A rectenna includes (a) a multi-band multi-channel (MBMC) matching network, and / or (b) an adaptively reconfigurable rectifier or a breakdown-protected rectifier. An MBMC matching network includes a plurality of T-shaped transmission line matching structures coupled in series. An adaptively reconfigurable rectifier circuit includes a low input power rectifying portion, a high input power rectifying portion, and a set of transistors configured for selectively and automatically transitioning the adaptively reconfigurable rectifier between a low input power operating configuration and a high input RF power operating configuration, in a manner correlated with input RF power level. A breakdown-protected rectifier includes a transistor-protected diode structure having a diode coupled to a transistor in a manner that protects the diode from direct exposure to negative voltages that would ordinarily cause the diode to break down in the absence of the transistor.

Description

technical field [0001] Aspects of the present disclosure relate to methods for improving wireless performance through (a) multiband multichannel (MBMC) RF matching networks and / or (b) extended input power range rectifiers (which may include adaptively reconfigurable rectifiers or breakdown protection rectifiers). Rectenna circuit components, circuits and techniques for power transfer (WPT) or power conversion efficiency (PCE) in ambient RF energy harvesting circuits. Background technique [0002] Wireless power transfer (WPT) involves the transfer of RF power from a predetermined source or source of a specific type to a receive antenna coupled to a rectifier. The combination of a receiving antenna and a rectifier is called a rectenna. A rectenna converts received RF energy into DC power that can be used to power a system or device such as a sensor or medical instrument. Ambient RF energy harvesting involves harvesting RF energy that is inherent in modern environments due t...

Claims

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Application Information

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IPC IPC(8): H03H7/38
CPCH03H7/383H02J50/27H02J50/50H02J50/001H02M1/32H02M7/217
Inventor 郭永新仲正孙虎成
Owner NAT UNIV OF SINGAPORE
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