CN-116706555-B - Adjustable Huygens super surface with feeder lines distributed transversely and longitudinally

CN116706555BCN 116706555 BCN116706555 BCN 116706555BCN-116706555-B

Abstract

The invention discloses an adjustable Huygens super surface with feeder lines distributed transversely and longitudinally, which belongs to the field of feeding of the adjustable Huygens super surface, and comprises a dielectric layer, an upper metal layer, a lower metal layer and a metal via hole, wherein the upper metal layer comprises a first upper cross rod, a first lower cross rod and a first vertical rod connected with the first upper cross rod and the first lower cross rod, a first PIN pipe is arranged in the first vertical rod, the lower metal layer comprises a second upper cross rod, a second lower cross rod, a second vertical rod connected with the second upper cross rod and the second lower cross rod, a first transverse feeder line and a first vertical feeder line, a second PIN pipe is arranged in the second vertical rod, the upper metal structure and the lower metal structure are respectively arranged on two sides of the dielectric layer, and the metal via hole is connected with the first lower cross rod and the second upper cross rod. The working center frequency of the invention is 9.4GHz, the upper and lower metal layers are communicated by the metal via holes, and the feeder line transversely and longitudinally spans the whole super surface, so that the feed network of the Huygens super surface array is hopeful to be simplified, and the invention has the characteristic of simplicity of the feeder line network.

Inventors

WANG WENCHANG
RAN JIA
XUE CHUNHUA
HAO HONGGANG
HUANG WEN
TAN FEI

Assignees

重庆邮电大学

Dates

Publication Date: 20260512
Application Date: 20230322

Claims (7)

1. An adjustable huyghen subsurface with feed lines distributed laterally and longitudinally, comprising: A dielectric layer; The upper metal layer is positioned above the dielectric layer and comprises a first upper cross rod, a first lower cross rod and a first vertical rod connected with the first upper cross rod and the first lower cross rod, and a first PIN tube is arranged in the first vertical rod; The lower metal layer is positioned below the dielectric layer and comprises a second upper cross rod, a second lower cross rod, a second vertical rod, a first transverse feeder and a first vertical feeder, wherein the second vertical rod is connected with the second upper cross rod and the second lower cross rod, and a second PIN tube is arranged in the first vertical rod; a metal via including a vertically penetrating upper and lower metal layers; The medium layer provides a physical basis for electromagnetic wave transmission to generate a certain phase shift; the first PIN tube and the second PIN tube provide adjustable characteristics for the structure by utilizing the unidirectional conduction characteristics of the first PIN tube and the second PIN tube, the metal via holes are used for unifying the voltages of the first lower cross rod and the second upper cross rod, and the first vertical feeder line and the first upper cross rod which are orthogonally distributed in space are used for independently feeding the units; the lengths of the first upper cross rod and the first lower cross rod are 15.6mm, the widths are 1.1mm, the thicknesses are 0.035mm, the distance between the upper surface of the first upper cross rod and the upper surface of the medium layer is 2.35mm, the length of the first vertical rod is 5.1mm, and the widths are 2.2mm; The lengths of the second upper cross rod and the second lower cross rod are 14.1mm, the widths are 1.1mm, the thicknesses are 0.035mm, the distance between the lower surface of the second lower cross rod and the lower surface of the medium layer is 2.35mm, the length of the second vertical rod is 5.1mm, and the widths are 2.2mm; The length of the first transverse feeder line is 6.7mm, the width of the first transverse feeder line is 0.2mm, the thickness of the first transverse feeder line is 0.035mm, the distance between the first transverse feeder line and the second opening is 1.15mm, the length of the first vertical feeder line is 15.6mm, the width of the first vertical feeder line is 0.2mm, the thickness of the first vertical feeder line is 0.035mm, and the distances between the first vertical feeder line and the second upper transverse vertical rod and the second lower transverse vertical rod are all 0.75mm.
2. An adjustable huyghen subsurface with a feed line profile according to claim 1, the method is characterized in that the upper metal layer and the lower metal layer are both made of copper.
3. The tunable huyghen subsurface of claim 1 wherein the dielectric layer is FR4, has a relative permittivity of 2.55, a thickness of 4.7mm, a length of 15.6mm and a width of 15.6mm.
4. The adjustable huyghen super surface with feeder lines distributed horizontally and longitudinally according to claim 1, wherein a first opening is arranged on the first vertical rod, the first PIN tube is arranged in the first opening, the length of the first opening is 0.2mm, and the distance between the first opening and the lower first bottom cross rod is 0.55mm.
5. The adjustable huyghen super surface with the feeder lines distributed horizontally and longitudinally according to claim 1, wherein the second vertical rod is provided with a second opening, the second PIN tube is arranged in the second opening, the length of the second opening is 0.2mm, and the distance between the second opening and the second upper cross rod above is 0.55mm.
6. The adjustable Huygens super surface with the feeder lines distributed transversely and longitudinally, according to claim 1, wherein the diameter of the metal through hole is 0.2mm, the height of the metal through hole is 4.77mm, and the metal through hole is connected with a first lower cross rod and a second upper cross rod.
7. The adjustable Huygens super surface with feeder lines distributed transversely and longitudinally according to claim 1, wherein the first PIN tube and the second PIN tube are respectively made of PIN tubes with the model number MACOM MADP-000907-14020, and the type PIN tube conduction equivalent circuit is And The series connection and the cut-off equivalent circuit are And And (3) connecting in series.

Description

Adjustable Huygens super surface with feeder lines distributed transversely and longitudinally Technical Field The invention relates to the field of feeding of adjustable Huygens super-surfaces, in particular to an adjustable Huygens super-surface with feeder lines distributed transversely and longitudinally. Background The electrical impedance and the magnetic admittance of the Huygens super surface can regulate and control electromagnetic waves through reasonable design, and the structure mainly comprises an electric resonance part and a magnetic resonance part, so that the Huygens resonance can be excited under the reasonable structural size design. At huyghen resonance the subsurface unit has almost perfect transmission properties. The Huygens super surface has the characteristic of obviously improving transmission efficiency, so that the Huygens super surface has important application scenes in various fields such as optical vortex beam, antenna radiation, holographic wave front control, dynamic wave front control and the like. Because of the problems of complex structure, high manufacturing difficulty, high cost and the like of the multilayer Huygens super surface, the research on the low-profile and non-via Huygens super surface is relatively hot at present, and the structures of two layers and below start to emerge continuously. As disclosed in patent document CN110380222a, the huyghen super-surface unit includes a dielectric substrate, an upper metal layer on the upper surface of the dielectric substrate, and a lower metal layer on the lower surface of the dielectric substrate, wherein the upper metal layer and the lower metal layer each include an open metal resonant ring, metal patches are embedded in the metal resonant rings, and the open positions of the open metal resonant rings of the upper metal layer and the lower metal layer are antisymmetric. The super surface is composed of a plurality of unit structure arrays, and the unit structure can realize 360-degree transmission phase control by respectively adjusting the opening size of the outer ring and the length of the embedded metal patch while keeping the transmission amplitude higher than 2.5 dB. The invention solves the problem that Huygens super-surface multilayer and through holes are needed. The performance is also fixed after the structural dimensions of the huygens super surface are determined, so that the functions realized by the planar array based on the huygens super surface are fixed once manufactured. To solve this problem, adjustable Huygens super surfaces have also been developed. The tunable huyghen super surface is generally added with PIN tubes, active devices of varactors and the like to realize tunable characteristics. For example [ IEEE T ANTENN PROPAG,2022,70 (9) ] discloses a double-layer adjustable Huygens super surface, wherein the unit insertion loss is about 1dB, the adjustable characteristic is realized by using the break-off of two PIN tubes, and the beam scanning at the E face + -50 DEG and the H face + -40 DEG is realized by manufacturing a transmission array with the size of 10 multiplied by 10. However, the current adjustable Huygens super surface based on active devices has the problem of complex feeder network. For a huyghen super surface based m rows and n columns reconfigurable transmissive array, m x n feeders are required to achieve this function in order to achieve independent regulation of each huyghen cell. The reconfigurable transmission array antenna has the problems of complex feeder network, high processing difficulty, high manufacturing cost and the like. The invention designs an adjustable Huygens super-surface model of an orthogonal feeder, which is hopeful to combine with a row-column feed mode of an array in [ IEEE TVEH TECHNOL,2021,70 (10): 9716-9724.], and can realize independent regulation and control of m+n array units only by m feeder lines. Meanwhile, the structure has the characteristics of simple structure, broadband, large phase modulation and the like. Disclosure of Invention The present invention aims to solve the problems of the prior art. An adjustable Huygens super surface with feeder lines distributed transversely and longitudinally is provided. The technical scheme of the invention is as follows: An adjustable huyghen subsurface with feed lines distributed laterally and longitudinally, comprising: A dielectric layer; The upper metal layer is positioned above the dielectric layer and comprises a first upper cross rod, a first lower cross rod and a first vertical rod connected with the first upper cross rod and the first lower cross rod, and a first PIN tube is arranged in the first vertical rod; The lower metal layer is positioned below the dielectric layer and comprises a second upper cross rod, a second lower cross rod, a second vertical rod, a first transverse feeder and a first vertical feeder, wherein the second vertical rod is connected with the second upper cross rod a