H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 88/02 (2009.01) H01Q 1/22 (2006.01) H05K 9/00 (2006.01) H03H 7/09 (2006.01)
Patent
CA 2661281
A mobile wireless communications device includes a housing and antenna supported by the housing. At least one circuit board is carried by the housing and has radio frequency (RF) circuitry operative with the antenna for receiving and transmitting RF signals through the antenna. A power amplifier is connected within a transmission line for amplifying RF signals to be transmitted over the transmission line to the antenna. An antenna switch is carried by the circuit board and connected to the antenna and RF circuitry. An RF shield surrounds the power amplifier and antenna switch isolates the power amplifier and antenna switch from the antenna and RF circuitry. A low pass filter has an input connected to the power amplifier and an output connected to the antenna switch for reducing any RF coupling of voltage standing waves of upper harmonic frequencies from the power amplifier into the antenna switch between the input and output of the low pass filter through the RF shield while maintaining transmission of signals through the transmission line at a desired fundamental frequency.
Corrigan Michael
Mankaruse George
Zhu Lizhong
Research In Motion Limited
Ridout & Maybee Llp
LandOfFree
Mobile wireless communications device with reduced harmonics... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mobile wireless communications device with reduced harmonics..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile wireless communications device with reduced harmonics... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1528786