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Flexible DSP Solution Key to High Speed WLAN Growth

April 4, 2002 8:40 am | Comments

With the introduction of 802.11 applications, operating in the uncluttered 5 GHz range and delivering data rates of 54 mbps, performance improvements have opened broader opportunities to designers. By Systemonic Corporation High Speed Wireless Local Area Networks are fast emerging as the next major growth area in the wireless communications field....

Planning Microwave Radio Systems for 3G Networks

April 4, 2002 8:40 am | Comments

Networks, including 3G (UMTS) cellular ones, will carry ATM circuits over them. As ATM was designed assuming fibre as the bearer medium, limited error detection or correction is employed. However, microwave radio is a suitable medium for ATM transmission, and current radio planning rules can be used....

Linear-in-dB Variable Gain Amplifier Provides True RMS Power Measurements

April 4, 2002 8:40 am | Comments

By Eric Newman and Stephen Lee, Analog Devices, Inc. A generally increasing demand for bandwidth, whether in cellular, broadband access, CATV, MMDS or LMDS applications, is drastically pushing the need for highly linear signal blocks. The tight channel spacing allocated by the FCC drives the need for strict power control and spectral grooming of all radiated emissions....

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Low Power Transceiver Module

April 4, 2002 8:30 am | Comments

Cirronet announced the availability of its high speed, low power WIT2411 transceiver module to provide OEMs with highly flexible wireless interconnectivity for a variety of devices and applications. Featuring an over-the-air data rate of 1.23 Mbps, the WIT2411 is appropriate when a cabled connection is not viable-due to obstructions, distance or cost....

LVDS Repeaters

April 4, 2002 8:30 am | Comments

Fairchild expanded its LVDS interface IC portfolio with four new LVDS repeaters. The newest interface products include 1:1, 2:2, 4:4 and 8:8 LVDS repeaters, which are designed to provide signal-level translation and to buffer signals traveling across backplane or cable in multiple communications applications, including base stations and multiple routing applications....

L/C Circuit and Filter Network

April 4, 2002 8:30 am | Comments

The 1008 L/C Circuit and 1812 Filter Network are passively integrated surface mount modules with an operating frequency range of 10 MHz to 3 GHz. These modules are designed to be precision tuned resonant circuits and lowpass and highpass filters. A varactor version is available in both the 1008 and 1812 module....

GaAs Transistors for Base Station Receiver Designs

April 4, 2002 8:30 am | Comments

Agilent Technologies announced two additional GaAs transistors available in the company's MiniPak miniature leadless package. These GaAs transistors are targeted at PC card and base station receiver designs. The Agilent MiniPak measures 1.4 mm × 1.2 mm × 0.7 mm. The 400-micron ATF-551M4 is a single voltage E-pHEMT GaAs FET that does not need a negative gate bias voltage for operation....

MMIC Mixer With Integrated LO and IF Amplifiers

April 4, 2002 8:30 am | Comments

Hittite Microwave introduces a high linearity down-converter receiver IC designed to support WCDMA applications where a high third order intercept (OIP3) point is required. A passive mixer coupled with a high dynamic range IF amplifier achieves an OIP3 of +29 dBm, and an input IP3 of +19 dBm. The HMC421QS16 provides a gain of 8 dB and 10 dB typical single sideband noise....

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Analog to Digital Converter

April 4, 2002 8:30 am | Comments

Signal Processing Technologies announces the SPT7722, an 8-bit 250 MSPS analog-to-digital converter (ADC). The SPT7722 delivers both improved linearity and dynamic performance at the same speed and resolution as its predecessor, the SPT7721. An additional member of this family is the SPT7720, an 8-bit 200 MSPS ADC....

Ceramic SMT GPS Diplexer

April 4, 2002 8:30 am | Comments

K & L Microwave Inc. has introduced a ceramic based GPS diplexer. The diplexer, with channels centered at 1227 and 1575 MHz is suitable for both manual and automated installation while enduring temperatures up to 205°C during the reflow solder operation. Its small size and light weight make the unit an excellent choice for pick and place manufacturing techniques without introducing orientation issues due to its surface mount printed...

Logarithmic RF Power Amplifier

April 4, 2002 8:30 am | Comments

Maxim introduces the MAX4000/MAX4001/MAX4002 family of power controller ICs intended for closed-loop bias control of GSM power amplifiers (PAs). These devices operate in the 100 MHz to 2.5 GHz frequency range, supporting GSM/GPRS, EDGE, or TDMA cellular handset applications. This series of controllers offers three input voltage ranges, eliminating the need for external attenuators and simplifying PA control-loop designs....

BGA Sockets

April 4, 2002 8:30 am | Comments

Gryphics released their surface mount technology contact design for a family of 0.8 mm - 1.27 mm pitch, high performance BGA sockets that provide up to 13 GHz performance at <– 1 dB. The stamped and formed contacts are spice-model and measurement supported, have small standard footprints, straight through designs, and short lead-times....

2-Pole Connector Series

April 4, 2002 8:30 am | Comments

Anderson Power Products offers the highly durable 2-pole SBX® connector series ideal for OEM and material handling applications. The SBX's single piece housing and rugged construction provide industrial quality and durability. SBX connectors have interchangeable contacts that enable users to easily replace contacts as needed APP's SBX connectors are available in 175 and 350 amp ratings for use up to 600 volts and continuous AC and DC o...

CMOS RF Transmitter

April 4, 2002 8:30 am | Comments

Chipcon AS released the CC1050, an integrated RF transmitter for the 300 MHz to 1000 MHz SRD (Short-Range Device) frequency bands. The CC1050 requires only a minimum of external components. The very low current consumption extends battery life. Key features of the CC1050 include 2.1 V to 3.6 V supply voltage, output power of +12 dBm at 433 MHz and +8 dBm at 868 and 915 MHz, data rates up to 76....

Crystal Oscillators up to 800 MHz

April 4, 2002 8:30 am | Comments

M-tron Industries introduced two new families of 5 × 7 mm crystal oscillators with frequency capability up to 800 MHz. Available in frequencies between 750 kHz and 800 MHz, the UVV series (VCXO) and the UVC series (Clock Oscillator) operate at 3.3 V and provide either LVPECL or LVDS compatible outputs in a standard 5 mm × 7 mm leadless ceramic package....

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