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Passive Components

Passive products

ARTICLES

New VPG ultra-high-precision Z1-foil wrap-around chip resistors tested per EEE-INST-002 and MIL-PRF-55342

April 15, 2014

Vishay Precision Group Inc. announced that its Vishay Foil Resistors brand (VFR) has introduced a new series of military-qualified, ultra-high-precision Z1-Foil wrap-around chip resistors. Tested per EEE-INST-002 (Tables 2A and 3A, Film/Foil, Level 1) and MIL-PRF-55342, devices in the 303261 - 303266 seriesprovide exceptional load-life stability of ±0.0025% typical after rated power at 70°C for 2,000 hours, low nominal TCR of ±0.2 ppm/°C from -55°C to +125°C, +25°C ref., PCR (ΔR due to self heating) of 5 ppm at rated power, and tight tolerances to ±0.02%.


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API Technologies introduces 2 to 7 channel switched filter banks with configurable frequency bands

April 15, 2014

API Technologies Corp., a leading provider of high performance RF/microwave, power and security solutions for critical and high-reliability applications, introduces a new line of standard switched filter bankswith customer-specified frequency bands from 2 to 7 channels. With lead times as fast as four weeks, the configurable solution significantly reduces development cycle time, resulting in cost savings and faster time to market.


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Richardson RFPD introduces new 1.0–4.0 GHz 2-way power divider/combiner from Wavelex

April 14, 2014

The SMA-connectorized, zero-degree WPD1040A is a Wilkinson-type power divider/combiner and features a low insertion loss of 0.50 dB (typical), high isolation of 18 dB (minimum) and excellent VSWR. It is suitable for LTE and land mobile radio (LMR), as well as RF bench test and mobile base station applications.


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Single junction low cost drop-in circulators

March 12, 2013

VidaRF offers low cost Drop-In, 1”x1” Circulators & Isolators designed for various wireless and power amplifier applications. The robust design provides high performance and reliability, typ specs: VSWR 1.13/Loss 0.25dB/ISOL 23dB, great IMD, and is magnetically shielded. Circuit tab can be straight or bent flush with base for surface mounting.


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Ultra-thin filters from Lark

March 4, 2013

Lark offers a full line of ultra-thin filters for commercial and military markets. Lark’s new ultra-thin package offers superior performance in less than 0.09” high package with low insertion loss and ultimate rejection levels of 60 dB while maintaining better than 1.5:1 VSWR. Units are lightweight and ruggedized for today’s AIR, SEA & LAND applications.


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New UHF Band 3 Channel Filter Bank from Telonic Berkeley

February 19, 2013
UHF Band 3 channel filter bank
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Ka-Band Isolator 27 to 31 GHz

February 6, 2013

DiTom Microwave has released a new Ka-Band Isolator 27 to 31 GHz. This Isolator covers both the military and commercial Ka-Band applications and is available with 2.92mm female or male connector configurations. DiTom Microwave can improve these electrical specs for high reliability use and narrow the band if necessary.


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RF Microwave Switched Bit Attenuator

February 4, 2013

S2D Microwave Inc. offers broad band 0.5 to 20 GHz, high performance 3 Bit, 60 dB switched bit attenuator. S3-AS6055R520 is a high performance compact unit with low insertion loss, fast switching speed, low harmonic distortion, Three-bit attenuation control has TTL driver.


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High-Rejection Bandpass Filter

January 7, 2013

JTI_2450BP15Q0100[1]RFMW Ltd. announces design and sales support for Johanson Technology’s (JTI) newly introduced 2.4 GHz, high-rejection bandpass filter (BPF) with land grid array (LGA)-type terminations. This brand new BPF has the highest close-to-passband rejection with the smallest footprint ever made by JTI.


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5.2 to 13 GHz elliptic function highpass filter

November 21, 2012

Integrated Microwave Corp. offers a high-frequency true elliptic function highpass filter. This small-profile filter offers a nominal passband insertion loss of 0.7 dBa at 5.2 to 13 GHz. This superior rejection provides 20 dB at 4.9 GHz, and -40 dB nominal DC to 4.8 GHz, with a 3 dB cutoff at 5.15 GHz.  Performance is comparable to a suspended substrate, but at one-quarter the size and cost.


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DOCUMENTS AND FILES

Combiners for Doherty Power Amplifier Architectures

March 20, 2013

Doherty combiner product line covers major communication bands ranging from 700 MHz to 2700 MHz. Each model is optimized for the center frequency of targeted frequency band. However, as new spectrum is being released, the pre‐designed standard models can be tuned in customer applications to meet performance. This document provides guidelines to tune these standard models for off‐band applications.

Selecting RF Chip Capacitors for Wireless

October 16, 2012

With today's advancements in wireless technology, greater emphasis is being placed on component performance. This article will provide a discussion of ceramic and porcelain chip capacitors and understanding their behavior in RF product designs. They are an excellent choice for wireless applications where volumetric efficiency, reliability and RF performance are an absolute must.

Application Guide to RF Coaxial Connectors and Cables

August 13, 2012
There is a wide variety of coaxial connectors and cables available for use in the RF and Microwave spectrum. While often not much thought is given to these essential components, a misstep here can result in undesirable system degradation. Given that typical RF systems are comprised of any number of items, e.g. RF generators, amplifiers, attenuators, power meters, couplers, antennas, etc., it is not uncommon that a great deal of thought is given to these “high end devices while mundane items such as connectors and cables are often treated as an afterthought".

Selecting Ferrite Circulators for Radar Applications

May 14, 2012
Radar markets continue to forecast positive growth, and Skyworks Solutions offers a range of products designed specifically for these expanding markets, including materials for phase shifter applications and ferrite circulators.

Improving Measurement Accuracy for High Frequency RF Connectors

April 6, 2012
Improving the accuracy of your microwave test and measurement equipment becomes increasingly important when high frequency devices are used in the transmission paths of radio, cellular, satellite and digital communications. This discussion helps to solve problems with measurement errors during and after calibration of your microwave test instrument.

Minimizing PIM Generation From RF Cables and Connectors

March 9, 2012
Understanding mechanical tolerances, coaxial design details and connector materials used in cable assemblies helps produce communications equipment with the lowest levels of passive intermodulation (PIM).

GWT Filters

February 6, 2012
Narrowband Microwave Bandpass Filter Design by Coupling Matrix Synthesis Morten Hagensen Guided Wave Technology ApS, Hilleroed, Denmark

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