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Multi-Band Circularly Polarized Antenna

A multi-band, circular polarization technology, applied in resonant antennas, antennas, antenna arrays, etc.

Active Publication Date: 2022-05-27
ARRALIS HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this embodiment in which the first region of the reflector's patch elements with the first frequency band is enclosed by the second region of the reflector's patch elements with the second lower frequency band has the disadvantage that it can only be Operates on frequency bands with well-spaced frequencies (typically multiples such as 3GHz, 6GHz, 9GHz, etc.)
However, it should be appreciated that this hybrid antenna structure has the disadvantage associated with the use of standard conductor reflectors in that it requires a λ between antenna and reflector at higher sub-bands 0 / 4 interval

Method used

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  • Multi-Band Circularly Polarized Antenna

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Embodiment Construction

[0053] Now with the help of Figure 7 to Figure 11 to explain the invention. The present invention includes a CP antenna comprising a helical antenna 5 and a HIS 10. The HIS 10 includes two distinct regions each provided with at least one resonant element. The dimensions of the resonant elements in each of the two regions are different, such as Figure 7 shown. This results in the resonant elements in each region having different resonant frequencies. Thus, the resonating elements of the first region 15 have a first resonant frequency at which the reflected electromagnetic signal has an electrical phase of 360° (or a multiple of n×360°, where n is an integer value), and The resonating elements of the second region 20 have a second resonant frequency at which the reflected electromagnetic signal has an electrical phase of 360° (or a multiple of n×360°, where n is an integer value). In a preferred embodiment of the present invention, the HIS 10 includes a substrate includin...

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Abstract

The invention provides a circularly polarized CP antenna device for multi-band GNSS. The antenna device comprises a helical antenna and a high impedance surface HIS comprising a conductive layer comprising a first region and a separate second region and a ground plane. The first region of the conductive layer is provided with at least one resonant element with a first resonant frequency, and the second region of the conductive layer is provided with at least one resonant element with a second resonant frequency.

Description

technical field [0001] The present invention relates to a circularly polarized (CP) antenna with low size, weight and power consumption (SWaP). More particularly, the present invention relates to a low SWaP circularly polarized antenna suitable for multi-band communications for applications such as Global Navigation Satellite Systems (GNSS). Background technique [0002] Low size, weight and power consumption (SWaP) antennas are beneficial for many applications, such as for example in mobile or wearable devices. To overcome Faraday rotation, communication between satellites and ground systems requires circularly polarized (CP) antennas, whereby the electric field vector of a signal rotates as the signal propagates through the ionosphere. [0003] One type of CP antenna is the helical antenna. A conventional helical antenna is figure 1 shown in. The helical antenna consists of two helical arms that are excited at their inner terminations out of phase (180° electrical phas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q9/27H01Q15/00H01P5/10
CPCH01P5/10H01Q1/38H01Q1/48H01Q9/27H01Q15/008G01S19/01H01Q9/0428H01Q15/14H01Q21/065
Inventor S·克里斯蒂D·翰浦瑞
Owner ARRALIS HLDG LTD