Antenna Systems & Technology - Winter 2013 - (Page 25)

COMPONENTS / SUBSYSTEMS NEW PRODUCTS & SERVICES Three New SMT High-Power Attenuators For Communication Richardson RFPD, Inc. has announced immediate availability and full design support capabilities for three new surface-mount technology (SMT) high-power attenuators from Anaren. These 30 to 50 W devices are high-performance, high-power chip attenuators covering from DC to 3.0 GHz and featuring high return loss and small footprints. Their high power-handling makes them wellsuited for inter-stage matching, directional couplers, isolators, terminating circulators and power monitoring. Their SMT packaging makes them available for automatic placement. The new attenuators are suited for cellular applications in all frequency bands, including AMPS, GSM, DCS, PCS, PHS and UMTS, as well as land mobile and military communications applications. Regulators Reduce Phase Noise in Wideband Communication Systems Analog Devices, Inc. has released ultra-low-noise LDO (low-dropout) regulators for RF (radio frequency) signal devices. The ADM7150/1 operate from 4.5 V to 16 V, provide up to 800 mA of output current and support output voltages from 1.5 to 5.0 V. The LDOs achieve an output-NSD (noise spectral density) of 1.4 nV/rtHz from 10 kHz to 1 MHz, which reduces VCO (voltage-controlled oscillator) phase noise in point-to-point microwave radios, satellite communications, defense electronics and other wideband applications. Additionally, a user adjustable CBYP can reduce low frequency 1/f noise (8 nV/rtHz at 100 Hz) for precision analog frontend measurement systems. In addition to ultra-low noise, the ADM7150/1 achieve line and load transient responses of 0.01%/V and 0.4%/A respectively with a 10-µF ceramic output capacitor. The LDOs also feature high PSRR (powersupply rejection ratio) performance of greater than 90 dB from 1 kHz to 100 kHz, and greater than 60 dB at 1 MHz. This effectively filters DC-DC switching regulator ripple, saving space by minimizing the size of discrete filtering components normally needed. Integrated Small Cell Power Amplifier Reduces Board Space by 50 Percent TriQuint Semiconductor, Inc. has introduced its first integrated power amplifier solution for 'small cell' and active antenna base stations that reduces board space while delivering high efficiency. Small cell solutions are key components in 3G/4G mobile networks including LTE. As the name implies, 'small cell' radio systems have deliberately-defined coverage areas that can improve connectivity where it is most needed. The radio transceivers in these systems are smaller by design to support indoor or outdoor deployment as required. By reducing board space, network infrastructure OEMs can reduce the size of radio systems and their bills of materials. Noted infrastructure researcher Earl J. Lum reports that small cell and active antenna solutions will be a growing part of infrastructure and future heterogeneous networks supporting faster 3G/4G data rates. "Highly integrated power amplifier solutions such as the TGA2450-SM and filtering technology offered by TriQuint support additional network capacity, higher efficiency systems and reduced system BOMs. The overall LTE outdoor microcell market is expected to begin high volume shipments in 2014 and reach USD $1.8 billion by 2017," said Earl J. Lum, president of EJL Wireless Research. For more components, visit www.antennasonline.com/main/category/markets/components-subsystems www.AntennasOnline.com Winter 2013 Antenna Systems & Technology 25 http://www.antennasonline.com/main/category/markets/components-subsystems http://www.AntennasOnline.com

Table of Contents for the Digital Edition of Antenna Systems & Technology - Winter 2013

Editor’s Choice
LTE's MIMO Requirement Strengthens the Need for Active Antenna Systems
Optimizing Cell and Tower Sites During the Data Explosion
Improve Passive Intermodulation Performance with Specialty High-Frequency Circuit Materials
Next Generation Wireless: Riding on the Back of Millimeter Waves
Antennas
Components/Subsystems
Test & Measurement
Marketplace
Industry News

Antenna Systems & Technology - Winter 2013