Mobile Printer Antenna Layout for Compact Multi-Standard Wireless
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Solution Overview
Problem
Media processing devices, such as mobile printers, face challenges in accommodating multiple communications standards and frequencies due to limited physical space and potential radiofrequency interference among components.
Innovation Solution
The device incorporates a housing with defined mounting surfaces for antennas, positioning them in orthogonal orientations to mitigate interference and simplify assembly, using a frame to support antennas away from interfering components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple communication components are added to support multiple standards and frequencies, then communication versatility is improved, but device complexity and physical space requirements worsen
Solution Approach 1:
A single housing structure serves multiple functions by providing mounting surfaces for antennas supporting different communication standards (Wi-Fi, Bluetooth, cellular) and frequencies simultaneously. The housing acts as both structural support and antenna mounting platform, eliminating the need for separate mounting structures for each communication component.
Solution Approach 2:
The patent utilizes orthogonal orientations (three-dimensional spatial arrangement) to position multiple antennas within the limited device volume. By arranging antennas along different axes (x, y, z dimensions) and using orthogonal mounting surfaces, the design maximizes spatial efficiency while maintaining signal isolation between different communication standards.
2Volume of moving object
If multiple communication components are placed in limited physical space, then device compactness is improved, but radiofrequency interference among components worsens
Solution Approach 1:
Different regions of the housing are assigned specific antenna mounting surfaces with distinct orientations optimized for different communication standards. Each antenna is positioned in a localized area with specific electromagnetic characteristics, creating zones of reduced interference while maintaining overall device compactness.
Solution Approach 2:
The patent employs orthogonal orientations to position antennas in three-dimensional space, utilizing vertical and horizontal mounting surfaces that are perpendicular to each other. This spatial separation in multiple dimensions reduces electromagnetic coupling and radiofrequency interference between antennas operating at different frequencies and standards within the compact device volume.
Data Source
AI summary
A printer includes: a housing with walls enclosing a compartment, and defining an adjacent media supply chamber; a cover coupled to an end of the housing beside the media supply chamber, movable between open and closed positions to expose or enclose the media supply chamber; a print head to apply indicia to media from the media supply chamber, and cooperate with the cover to form an outlet at a front wall of the housing for dispensing the media; a frame within the compartment, defining a first mounting surface beside and oriented towards a second end of the housing, a second mounting surface with a portion orthogonal to the first mounting surface and oriented towards a side of the housing, and a third mounting surface oriented towards the front wall; and first, second, and third antennas disposed on the first, second, and third mounting surfaces respectively.