- Buyers Guide
Military Microwaves Supplement
Recent Advances in Radar Technology
Using Calibration to Optimize Performance in Crucial Measurements
Integrated Data Tuner Solution
This low power, high performance integrated data tuner solution consists of an integrated upconverter with a surface-acoustic wave filter and an integrated downconverter with a dual-synthesizer. The tuner conserves printed circuit board real estate while enabling high speed data, video and voice-over-cable and features the lowest power consumption for cable set-top, cable modem and cable telephony applications. Designed specifically to support the latest 256 quadrature amplitude modulation digital formats, the tuner solution reduces component count, minimizes power consumption and offers DOCSIS-compliant performance essential for next-generation cable devices. Price: $7.50 (10,000).
ANADIGICS Inc., Warren, NJ (908) 668-5000.
LNA/Mixer 900 MHz Downconverter
The model RF2461 low noise amplifier (LNA)/mixer 900 MHz downconverter is a complete receiver front-end that provides good noise figure and linearity performance for dual-mode CDMA/FM cellular applications. In addition to its digitally controlled LNA gain, mixer gain and power-down mode, the RF2461 also features adjustable IIP3 of the LNA and mixer bias current using an off-chip current-setting resistor. The unit can be digitally controlled between two levels, reducing current draw in CDMA standby and other situations that do not require high IIP3 while offering a 30 dB stepped gain control range as it amplifies and downconverts RF signals. Typical noise figure is 1.8 dB (RF2461), 1.8 dB (LNA) and 5.7 (mixer). Designed specifically for CDMA/FM cellular systems and general-purpose downconversion for various battery-powered equipment applications, the unit is housed in an LPCC-20 package that measures 4 mm ´ 4 mm. Price: $1.87 (in quantities exceeding 10,000).
RF Micro Devices Inc. (RFMD), Greensboro, NC (336) 664-1233.
Single-chip, Zero-IF, ISM-band Transceiver
The model NT2903 Chip-Ceiver™ is reportedly the world’s first fully integrated, single-chip, FM/FSK transceiver utilizing a unique, direct-conversion, zero-IF architecture. This approach allows a 30 to 40 percent reduction in total component count compared to a superheterodyne receiver. The Chip-Ceiver offers full duplex operation in any 26 MHz band from 400 to 1000 MHz on a 2.7 to 3.3 V supply and integrates on-chip, dual VCOs, dual phase-locked loops, a reference oscillator, a quadrature mixer, baseband filters, AGC and a patented tankless discriminator. In addition, the device utilizes a direct modulation scheme, which can accept either analog or digital signals. Tuning is accomplished via a three-wire serial interface. Power output is 1.5 dBm. The device is fabricated as a monolithic BiCMOS IC and is available in a TQFP-48 (7 mm) package. Price: $4.63 (10,000). A fully functional evaluation board is also available for $199.
NUMA Technologies Inc., Naples, FL (941) 591-8008.
Get access to premium content and e-newsletters by registering on the web site. You can also subscribe to Microwave Journal magazine.