Adaptive Impedance Matching Module for Military and Public Safety
Antenna and Power Amplifier Applications
Next-Generation ParaTune™ Passive
Tunable ICs Yield New Applications
COLUMBIA, Md. (Business Wire EON) April 23, 2008 --
Paratek Microwave, Inc., a technology leader in radio frequency (RF)
components for wireless applications, is now shipping high-performance Adaptive
Impedance Matching Module (AIMM™)
evaluation kits that have been optimized for Military and Public Safety
radio applications. Based on Paratek’s ParaScanTM
tunable RF technology,
AIMM is currently finding widespread application in commercial cellular
handsets. The 7mm x 21mm AIMM unit dynamically adjusts its internal
impedance matching circuit to minimize reflected power, thereby
achieving a near-optimal match. The most common application for AIMM is
correcting antenna and amplifier mismatch conditions that often occur
with handheld radios and body-worn antennas. AIMM can handle in excess
of 2 watts with extremely low intermodulation distortion thanks to
Paratek’s ParaTuneTM
family of Passive
Tunable ICs (PTICs). This technology makes AIMM feasible by
overcoming the power limitations of other tunable technologies such as
varactor diodes and MEMS.
AIMM systems for handheld radios have yielded improvements in total
radiated power in excess of 5 dB by correcting the antenna mismatch that
occurs when a radio is in close proximity to the user’s
head or torso. AIMM can also be applied in sensor networks where the
sensor’s antenna can be detuned by proximity
effects of the ground, foliage, or debris.
While the primary application of AIMM is for antenna or power amplifier
tuning, the product can be used for any application that requires
forward power to be maximized and reverse power to be minimized.
AIMM is a self-contained multi-chip-module (MCM) comprising a tunable
impedance network incorporating Paratek’s
PTICs, an on-board microprocessor with custom control algorithms,
forward and reverse power detectors, and a bias voltage generator. AIMM’s
adaptation and sleep modes are controlled via an SPI interface. The
evaluation kit consists of an AIMM mounted on a test fixture with SMA RF
connectors as well as an external mechanical switch box that allows
standalone operation of the module. While the modules have been
optimized for constant amplitude modulation such as FM or BPSK,
specialized software loads are available for other modulation types.
Paratek is now shipping AIMM kits operating over 280 - 300 MHz, 824 -
960 MHz, and 1710 - 1980 MHz. Standard kits are priced at $3,000 and
ship approximately four weeks after receipt of order. Other bands within
the frequency range of 200 MHz to 2.2 GHz are available for a nominal
NRE charge.
To purchase evaluation kits, contact Paratek Government sales at
301-575-0900 x215 or visit our web site, www.paratek.com,
for additional information.
About Paratek
Paratek Microwave, Inc. designs and manufactures adaptive RF front-end
component solutions for mobile wireless applications requiring
multi-mode and multi-band operation. The Company is privately held and
headquartered in Columbia, MD, with additional offices in Nashua, NH and
Crystal Lake, IL.
MULTIMEDIA GALLERY http://www.businesswire.com/cgi-bin/mmg.cgi?eid=5666451
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