Receiver circuits and systems for receiving medium wave and short wave signals
A technology of receiving paths and multiplexing signals, applied in directional diversity systems using radio waves, direction finders and circuits using radio waves, etc. It can solve problems such as difficulty in constructing tuning front-end circuits and large impedance of whip antennas.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0021] Broadcast radio coverage in rural areas is sometimes limited, in part because frequency modulated (FM) radio signals, which are preferred for portable communications, attenuate significantly over long distances. Medium wave (usually an amplitude modulated (AM) signal) can travel farther, making AM broadcast receivers a desirable option for portable radios, media devices, and cellular phones sold in rural areas where long-distance AM coverage is superior to FM coverage feature. AM frequencies are about 1 / 100th of FM frequencies, making their wavelengths significantly longer and making compact antennas within such portable receivers less efficient at receiving AM signals. Additionally, practical compact antennas, such as ferrite loop rod antennas, are inherently directional, so mobile devices using AM signals tend to be easily switched on and off. In addition, cellular phones—especially the electronics associated with their displays—generate a lot of interference in the ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com