High Efficiency WCDMA Power Amplifier for MUOS Handheld Radio

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,961.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
N66001-10-M-8001
Award Id:
98135
Agency Tracking Number:
N092-159-0702
Solicitation Year:
n/a
Solicitation Topic Code:
NAVY 09-159
Solicitation Number:
n/a
Small Business Information
2071 Lemoine Avenue Suite 302, Fort Lee, NJ, 07024
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
145051095
Principal Investigator:
HoumanGhajari
Director
(858) 272-8800
houman@maxentric.com
Business Contact:
KamranMahbobi
Managing Director
(201) 242-9805
kmahbobi@maxentric.com
Research Institute:
n/a
Abstract
The Mobile User Objective System (MUOS) is an ultra high frequency (UHF) geosynchronous satellite communication (SATCOM) system based on commercial 3G Universal Mobile Telecommunications System (UMTS) and Wideband Code Division Multiple Access (WCDMA) architecture. A well-known characteristic of MUOS signal is its "notch" in the middle of spectrum, which requires a highly-linear transmitter. Warfighters cannot charge their batteries at regular basis, hence the efficiency of transmitter is also important. To provide a low unit cost, high reliability communication capability for the warfighter, smaller and lighter weight communication devices, with high efficiency and linearity, are essentially needed. To design a highly efficient MUOS handheld transmitter, MaXentric proposes GreenAmp Mini which uses a dynamic supply modulator to provide an adaptive DC power to the power amplifier. The dynamic supply modulator tracks the envelope of the MUOS signal, and provides the appropriate DC supply power according to the envelope signal. Since the DC supply power is changing with the input envelope signal, the overall transmitter will not consume extra DC power in a low output power region. When the MUOS handset is not transmitting, the DC power is not provided to the transmitter, minimizing the power consumption in the system and improving the overall system efficiency, which increases the battery lifetime significantly.

* information listed above is at the time of submission.

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