Digital antenna architectures using commercial off-the-shelf hardware
Loading...
Authors
Eng, Cher Shin
Subjects
Phased Array
Array Bandwidth
Beamforming
Radar
Antenna
Transmitter
Receiver
Direction Finding
Modulation
Demodulation
COTS
Array Bandwidth
Beamforming
Radar
Antenna
Transmitter
Receiver
Direction Finding
Modulation
Demodulation
COTS
Advisors
Jenn, David C.
Date of Issue
2003-12
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
The changes in war fighting tactics and advancement of technology shape the ways to implement and design multifunction phased array radars. This thesis investigated whether the commercial modulation boards used in the 3-D 2.4- GHz phased array transmit antenna is capable of wideband performance. The phase of the transmitted signal out of the modulator board was adjusted to provide a phase shift from 0 to 2 ,̧ and the insertion phases at these phase settings were measured using a Vector Network Analyzer, sweeping the frequency from 0.8 to 2.5 GHz. The measured insertion phases are used to simulate the radiation pattern of a linear phased array, and the results show that modulator does not have instantaneous wideband characteristics. This thesis also looked at the design of the complementary phased array receiver architecture using commercially available demodulator boards. The demodulator board was successfully configured to operate as a phase shifter. Phase shifted transmit signals were injected into the demodulator, and corresponding phase shifts were measured via the In-Phase and Quadrature voltages.
Type
Thesis
Description
Series/Report No
Organization
Identifiers
NPS Report Number
Sponsors
Funding
Format
xvi, 78 p. : ill. (some col.) ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner.