Component for a wireless communication terminal constituting an antenna, loudspeaker and ringer
View Patent ↗A structural arrangement for a wireless communication terminal includes a case in which are disposed a sound transducer and a patch planar antenna connected to a printed circuit. The transducer has an electrically neutral portion comprising a vibrating membrane and an electrically conductive portion. The antenna incorporates a cavity delimited by a ground plane and a conductive patch disposed on a dielectric support. The electrically neutral portion of the sound transducer is situated in the cavity of the antenna. The electrically conductive portion of the sound transducer constitutes a portion of the ground plane of the antenna.
1. A structural arrangement for a wireless communication terminal including a case in which are disposed a sound transducer and a patch planar antenna connected to a printed circuit, said transducer having an electrically neutral portion comprising a vibrating membrane and an electrically conductive portion, said antenna incorporating an acoustic cavity delimited by a ground plane and a conductive patch disposed on a dielectric support, wherein said electrically neutral portion of said sound transducer is situated in said acoustic cavity of said antenna, said electrically conductive portion of said sound transducer constitutes a portion of said ground plane of said antenna, and said patch and said dielectric support of said antenna contain a common slot which faces said vibrating membrane of said sound transducer, and which outputs the sound produced by said vibrating membrane.
2. The structural arrangement claimed in claim 1 wherein said sound transducer is disposed in a recess in said printed circuit.
3. The structural arrangement claimed in claim 1 wherein said ground plane of said antenna is perforated.
4. The structural arrangement claimed in claim 1 wherein elongation lugs hold said vibrating membrane away from said electrically conductive portion of said transducer.
5. The structural arrangement claimed in claim 1 , wherein said acoustic cavity is a front acoustic cavity of said sound transducer, wherein said vibrating membrane of said sound transducer is disposed between said front acoustic cavity and a rear acoustic cavity, and wherein sound sealing covers across said cavity of said antenna delimit said front acoustic cavity of said transducer.
6. The structural arrangement claimed in claim 5 , further including volume adjusting seals across said front acoustic cavity to reduce the volume thereof.
7. The structural arrangement claimed in claim 1 , wherein said acoustic cavity is a front acoustic cavity of said sound transducer, wherein said vibrating membrane of said sound transducer is disposed between said front acoustic cavity and a rear acoustic cavity, and wherein acoustic seals delimit said front acoustic cavity between said antenna and said case of said wireless communication terminal.
8. The structural arrangement claimed in claim 1 , wherein said case of said wireless communication terminal incorporates an opening facing said slot in said antenna.
9. A component for a wireless communication terminal, said component constituting a patch planar antenna and a sound transducer and having an electrically neutral portion and an electrically conductive portion, said electrically neutral portion including a vibrating membrane situated in an acoustic cavity of said patch antenna delimited by a ground plane and a conductive patch disposed on a dielectric support, said electrically conductive portion including electrically conductive members of said sound transducer constituting at least part of said ground plane of said antenna, wherein said dielectric support and said patch antenna contain a common slot which faces said vibrating membrane and which outputs the sound produced by said vibrating membrane.