Antenna for mobile phone
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 18, 2001
Grant Date -
N/A
app pub date -
Dec 20, 2000
filing date -
Dec 14, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An antenna for mobile phone mainly includes a low-profile multi-layered circuit board mounted on a base and protectively covered with a light-transmissible hood fitted around the base. The low-profile multi-layered circuit board is provided at a reverse side with a printed antenna and at a front side with a half-wave voltage-doubling circuit and a light-emitting element. A power input of the half-wave voltage-doubling circuit is replaced with a printed inductance for inducing an alternating voltage and generating a resonance to eliminate a capacitive reactance in a diode included in the circuit. The diode rectifies the induced alternating voltage to a direct voltage for driving the light-emitting element to emit lights. When additional n diodes and n capacitances are parallelly connected to the half-wave voltage-doubling circuit, a half-wave voltage-multiplying circuit is constituted, so that an amplified output voltage (n+1)Vm times as large as a received voltage signal can be obtained to drive multiple light-emitting elements connected to the output of the circuit to emit lights.
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