Revision "C", 06/30/2008
Adapticom, Inc.
Here are some items of interest we found in April:
All About Radio Direction Finding (RDF)
Provided by Joe Moell, ham radio callsign KØOV.
Homing In refers to the process of tracking down the source of a radio or other electromagnetic signal using radio direction finding (RDF) equipment.
Homing In is also the title of Joe's regular column on RDF that ran for 15 years in 73 Amateur Radio Today magazine and is now in CQ VHF magazine. Joe also has a comprehensive book on the subject "TRANSMITTER HUNTING Radio Direction Finding Simplified".
RDF Products DFP-1000B
Radio Direction
Finding Bearing Processor/Display - Facilitates product development
through full RS-232 Remote Control Capability With Windows Software
Thru Single Com Port. 
MSSI white paper COMMERCIALIZATION OF AN ULTRA WIDEBAND PRECISION
ASSET LOCATION SYSTEM (http://www.multispectral.com/pdf/MSSI161103a.pdf)
Multispectral
Solutions (MSSI) Product Development has announced a ruggedized, handheld version of its
ultra wideband (UWB) active RFID and tracking system for personnel and
asset management. The Vision V652M Mobile Tag Reader runs Windows CE
and is compatible with MSSI's Sapphire family of active RFID tags,
according to the company.
ICI (Innovative
Concepts, Inc., a wholly owned
subsidiary of Herley Industries,
Inc.) "mobiquiti"
card (http://www.innocon.com/mobiquiti.asp) Has undertaken development of a product providing custom full scale network solution using a combination
of our software and hardware components
• IPv4 and IPv6 support
• DHCP support for wired interface address assignment
• Supports exterior routes for external networks across the
wireless domain
• SNMP v2c agent for efficient network management
• Web-based interface for easy node configuration
• Automatic packet classification without application changes
DHS presentation
by Jalal Mapar (http://www.ece.wpi.edu/Research/PPL/Workshops/2007/PDF/Mapar.pdf)
at the August 2007 conference at the Worcester
Polytechnic Institute.
TI Short Wave Modem (http://focus.ti.com/docs/solution/folders/print/333.html). Voice/Data over High Frequency solution combines low delay
HF modem with vocoders and special FEC to make possible reliable and secure
voice communication over HF. Unique forward error correction technique developed
especially for SPIRIT proprietary vocoders enhances voice quality under
disturbing, noisy propagation conditions.
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AD9854 CMOS 300 MSPS Quadrature Complete DDS |
AD9854 digital synthesizer uses
advanced DDS technology coupled with two internal high speed quadrature DACs to form a digitally programmable I and Q
synthesizer function. When referenced to an accurate clock source, the
AD9854 generates highly stable, frequency-phase, amplitude-programmable
sine and cosine outputs that can be used as an agile LO in
communications, radar, and many other applications. The innovative high
speed DDS core of the AD9854 provides 48-bit frequency resolution (1
μHz tuning resolution with 300 MHz SYSCLK). Maintaining 17 bits ensures
excellent SFDR.
The circuit architecture of the AD9854 allows the generation of
simultaneous quadrature output signals at frequencies up to 150 MHz,
which can be digitally tuned at a rate of up to 100 million new
frequencies per second. The sine wave output (externally filtered) can
be converted to a square wave by the internal comparator for agile
clock generator applications. The device provides two 14-bit phase
registers and a single pin for BPSK operation.
(AD9854 CMOS 300 MSPS Quadrature
Complete DDS)
Innovative Concepts provides First Responder, 3D Locator Systems to L-3 in support of recent DHS Contract.
http://www.innocon.com/PDF/L3_DHS_ICI_MAR07.pdf
Innovative Concepts to begin product development on an enhanced version of its OpenMesh ad hoc network router.
Group delay
- what is it?
Group delay is a measure of how
long it takes a signal to traverse a network, or its transit
time. It is a strong function of.....
http://www.microwaves101.com/encyclopedia/groupdelay.cfm
WPI Precision Personnel Location (PPL) System: 3D Performance, D.
Cyganski, R.J. Duckworth, J. Electrical and Computer Engineering
Department
Worcester Polytechnic Institute Worcester, Massachusetts
http://www.ece.wpi.edu/Research/PPL/Workshops/2007/PDF/Cyganski1.pdf
Product Development of Position-Finding Technology for
Emergency Personnel
ATMEL FPGA (Field Programmable Gate Array)
Atmel's
AT40KAL Series co-processor FPGAs range from 5K to 50K usable gates and
are designed for high-density, compute-intensive DSP and other high
speed product development. The AT40KAL family solves the Logic vs. SRAM
trade-off
problem by providing fast, flexible, distributed 10 ns FreeRAM™ without
using valuable logic resources. Structured logic functions, including
variable array multipliers, can be implemented directly in core cells
without using any bussing resources, providing dramatic improvements in
speed, utilization, power and system cost. Atmel FPGA technology is now
available as an embedded core. The first family of products based on
this technology is the FPSLIC™ family. FPSLIC (Field Programmable
System Level Integrated Circuits) devices combine 5 - 50K of AT40KAL
FPGA with up to 36K of SRAM and a 25 MHz AVR MCU.
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