Active short-wave broadband double-whip antenna

A short-wave and broadband technology, applied in the field of active short-wave broadband double-whip antennas, can solve the problems of low antenna directional gain, low antenna radiation efficiency, and large VSWR in low-frequency bands.

Active Publication Date: 2021-05-18
NAVAL UNIV OF ENG PLA
View PDF18 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at at least one defect or improvement requirement of the prior art, the present invention...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Active short-wave broadband double-whip antenna
  • Active short-wave broadband double-whip antenna
  • Active short-wave broadband double-whip antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an active short-wave broadband double-whip antenna, which comprises a first antenna radiation unit, a second antenna radiation unit, a loading network, a matching network and an integrated network circuit, one or more loading networks are arranged on the first antenna radiation unit and the second antenna radiation unit; the bottom ends of the first antenna radiation unit and the second antenna radiation unit are provided with a matching network, the matching network comprises a plurality of sub-matching networks, and different sub-matching networks correspond to different beam directions; the integrated network circuit controls feed phases of the first antenna radiation unit and the second antenna radiation unit in an out-of-phase feed mode; a beam direction of the radio frequency signal is obtained, and a sub-matching network corresponding to the beam direction is selected to carry out impedance matching on the first antenna radiation unit and the second antenna radiation unit; impedance matching when the wave beam points to different directions is met, and broadband of the antenna is achieved; the feed phase of the antenna radiation unit is controlled by adopting an out-phase feed mode, so that horizontal beam scanning of the antenna array in a working frequency band is realized, and the directional gain of the double-whip antenna is improved.

Description

technical field [0001] The invention belongs to the technical field of radio short-wave antennas, and more specifically relates to an active short-wave broadband double-whip antenna. Background technique [0002] At present, the short-wave double-whip antenna mostly adopts the traditional in-phase feeding method. Although the in-phase feeding method maintains the omnidirectionality of the horizontal plane pattern, the antenna's directional gain is low, and the standing wave ratio in the low frequency band is large, resulting in low antenna radiation efficiency. . [0003] Since the bandwidth of the shortwave frequency band is relatively wide, up to 10 octave frequencies, in order to achieve broadband, the existing shortwave double whip antennas mostly use two pairs of double whip antennas with high and low ports to cover the high frequency band and low frequency band respectively; and in order to reduce mutual interference , the footprint of two pairs of double-whip antenna...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01Q3/24H01Q1/36H01Q1/50
CPCH01Q3/247H01Q1/36H01Q1/50Y02D30/70
Inventor 谢旭王衡峰王颢王一鸣王宇航
Owner NAVAL UNIV OF ENG PLA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap