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Silicon Germanium BiCMOS: Who Needs It?

September 11, 2002 5:34 am | by Mark Jakusovszky, Atmel Corporation | Product Releases | Comments

Editor's Note: To better view this article and its tables, please down load the PDF version.      To many, Silicon Germanium (SiGe) is a new technology that is the rage with every wireless chip company, but SiGe transistors experiments began fifteen years ago. Integrated circuit (IC) designers saw SiGe as a viable alternative to Gallium Arsenide (GaAs), which was the de-facto technology choice at the time....

How to Specify Directional Couplers

September 11, 2002 5:34 am | Product Releases | Comments

by Eric Schiebler, MECA Electronics A PDF version of this article is available for download      Over the years many different techniques have been utilized to bring about the physical realization of directional couplers. The scope of this article is limited to discussion of quarter-wavelength, coaxial, directional couplers, as this type of coupler represents a balanced compromise between functional range, perfor...

Looking Back, and Moving Forward

September 11, 2002 5:31 am | Product Releases | Comments

By Kim Stokes, Editor-in -Chief, kstokes@cahners.com      I thought that the editorial I wrote last October was the hardest I've ever had to write. I take that back. One year later, this is just as hard.       At the time this issue went to the printer, it was still August....

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SiGe LNA Transistor

September 11, 2002 5:17 am | Product Releases | Comments

     A low noise figure and excellent linearity make the NESG2101M05 an ideal first stage device for 802.11a W-LAN, CDMA, and OFDM transceiver applications. Its high P 1dB makes it an excellent driver output stage in low power transmitters. Its high V CEO rating means it can be operated at voltages up to 5 V....

Voltage Feedback

September 11, 2002 5:17 am | Product Releases | Comments

     The LT1819 is a dual, high speed (Gain Bandwidth Product = 400 MHz, Slew rate = 2500 V/μs), unity gain stable, voltage feedback op amp with very low total harmonic distortion of 㫭 dB at f = 5 MHz and VOUT = 2 Vp-p, RL = 500 Ohm supply current is only 9 mA/amplifier....

Multi-Interface Connectors

September 11, 2002 5:17 am | Product Releases | Comments

     The 1.0/2.3 SMT compatible multi-interface connector series facilitates PCB assembly and also accommodates tight packaging density. These connectors are available with 2, 3, and 4 coax interface combinations in the same housing. Frequency coverage is from DC - 2 GHz with standard 75 ohm impedance value and DC - 10 GHz in optional 50 ohm impedance....

Durable Quick Disconnect

September 11, 2002 5:17 am | Product Releases | Comments

     Anderson Power Products® introduces the 180 amp bus bar contact. The durable bus bar contacts attach directly to a copper bus allowing quick connect/disconnect of cables. These bus bar contacts offer a quick disconnect design that minimizes the expense of system assembly, replacement or repair....

PCS/AMPS Diplexer

September 11, 2002 5:17 am | Product Releases | Comments

     Lorch Microwave introduces a dual band diplexer for use where a common antenna is used for both PCS and AMPS. The PCS passband covers 1850 - 1990 MHz and the AMPS passband covers 824 - 896 MHz. The diplexer exhibits less than 0.2 dB of loss in the passbands and greater than 55 dB of rejection in the opposite passband....

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Connectorized Cords

September 11, 2002 5:17 am | Product Releases | Comments

Whitney Blake Company offers its fully connectorized communication cords for use in harsh environments. Originally designed for military use, the new cords are manufactured with a polyurethane jacket and come pre-assembled with all appropriate contacts and connectors for assembly into communication devices....

Class A Amplifier

September 11, 2002 5:17 am | Product Releases | Comments

The SM1720-37HS is a compact Class A amplifier operating from 1700 to 2000 MHz. Output power, at P1dB, is +37 dBm (minimum) with a +51 dBm (minimum) OIP3. Linear gain is 34 dB with 1.0 dB peak to peak flatness. DC supply is +12 volts @ 1.6 Amps, (+10 V operation is available). Dimensions are 4.7 L × 2....

Lithium Battery Protection Module

September 11, 2002 5:17 am | Product Releases | Comments

The Panther Lithium-Battery Protection Module is for use in Li-ion and Li-polymer single-cell applications. The miniature module improves the operating life of one-cell rechargeable battery packs. It provides complete lithium-battery protection with no external components. The Panther module is sized to connect to most Li-polymer cells without extra connecting boards or flex....

TOPICS:

Transmitter

September 11, 2002 5:17 am | Product Releases | Comments

The T400 series is a 2.5 cubic inch, 2 watt transmitter. In addition to the small size of the unit, other features include low voltage operation (down to 8 V DC or lower) with high overall efficiency and rugged construction....

Switching Regulator

September 11, 2002 5:17 am | Product Releases | Comments

The LTC3732 is a 3-phase, 5-bit VID, 600 kHz, synchronous step-down switching regulator that drives N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The 3-phase controller drives its output stages with 120° phase separation at frequencies of up to 600 kHz per phase to minimize the RMS current dissipated by the ESR of both the input and output filter capacitors....

IGBT Family

September 11, 2002 5:17 am | Product Releases | Comments

STMicroelectronics introduces a family of IGBTs optimized for use in motor control equipment and high-frequency inverters where short-circuit protection is necessary. The parts are based on high-voltage PowerMESH™ technology, which uses a patented strip layout. The K family IGBTs offer short-circuit withstand time of 10 ms....

Capacitors for EMI Filtering

September 11, 2002 5:17 am | Product Releases | Comments

Johanson Dielectrics introduces a new ceramic filter/decoupling capacitor utilizing X2Y® technology. The X2Y design incorporates common shielding electrodes that form a Faraday Cage around the standard capacitor. The addition of the common electrode creates two matched or balanced capacitors enabling simultaneous line-to-line and line-to-ground filtering....

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