Wideband Patch Antenna Module for Dual GPS GLONASS Reception

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional GPS patch antennas cannot receive GLONASS signals, requiring separate manufacturing lines and increasing costs due to design limitations and size constraints in mobile terminals, which are being miniaturized.

Innovation Solution

A wideband patch antenna module that couples feeding points on a patch antenna to low-noise amplifiers and a hybrid coupler, allowing for ultra-wideband characteristics to receive both GPS and GLONASS signals, with the feeding patch formed on the side or bottom surface of a base layer to minimize size and costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a GPS antenna and a GLONASS antenna are mounted together in mobile terminals, then both GPS and GLONASS signals can be received, but antenna size increases and manufacturing costs increase

Engineering Contradiction:

Improvesignal reception capabilityVSAvoidantenna size

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent combines GPS and GLONASS antenna functions into a single integrated patch antenna structure. The antenna uses multiple feeding points (first feeding point and second feeding point) on the same patch to receive both GPS signals (centered at 1575.42 MHz) and GLONASS signals (centered at 1602 MHz), eliminating the need for separate antennas and reducing overall antenna size.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patch antenna is designed with universal functionality to handle multiple frequency bands. By configuring the patch with specific dimensions and multiple feeding points at different locations, the same antenna structure can operate across both GPS and GLONASS frequency ranges, making it a multi-functional component that replaces what would traditionally require separate dedicated antennas.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a GPS antenna and a GLONASS antenna are mounted together in mobile terminals, then both GPS and GLONASS signals can be received, but manufacturing costs increase due to separate manufacturing lines

Engineering Contradiction:

Improvesignal reception capabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges GPS and GLONASS antenna functions into a single integrated patch antenna structure. The antenna uses multiple feeding points (first feeding point and second feeding point) on the same patch to receive both GPS signals (centered at 1575.42 MHz) and GLONASS signals (centered at 1602 MHz), eliminating the need for separate antennas and reducing overall antenna size.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If a conventional GPS patch antenna is used, then GPS signals can be received, but GLONASS signals cannot be received due to frequency band limitations

Engineering Contradiction:

ImproveGPS signal receptionVSAvoidfrequency band coverage

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the operational parameters of the patch antenna by introducing multiple feeding points at different locations on the patch surface. This configuration allows the antenna to resonate at multiple frequencies simultaneously. The first feeding point is optimized for GPS frequency (1575.42 MHz) while the second feeding point is optimized for GLONASS frequency (1602 MHz), enabling the same physical structure to operate reliably across different frequency bands.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP3217477B1Wideband patch antenna module

Publication Date: 2022.01.19 AMOTECH CO LTD

Figure 1~2
Figure 3
Figure 4

AI summary

Disclosed is a wideband patch antenna module where two feeding points are formed on a lower patch at a preset angle therebetween, whereby ultra-wideband characteristics receiving both a GPS signal and a GLONASS signal may be realized, and antenna size and manufacturing costs may be minimized. The wideband patch antenna module includes a base layer; a radiation patch provided on a top surface of the base layer; a lower patch provided at a bottom surface of the base layer; a first feeding point provided at a bottom surface of the lower patch; and a second feeding point provided at the bottom surface of the lower patch, wherein an imaginary line connecting the first feeding point and a center point of the lower patch intersects with an imaginary line connecting the second feeding point and the center point of the lower patch.