May, 2021
GOWANDA, NY — TTE, an affiliate of Gowanda Components Group, has intro- duced two new filter series for high-frequen- cy testing. The new filters, LC17 and HC17, provide brick wall characteristics and per- formance to 7 GHz making them excellent for ADC/DAC test setups. Such signal conditioning testing is espe-
cially important for semiconductor chips and integrated circuits where testing frequencies continue to trend higher and higher into the GHz range. TTE’s new filters leverage the steep roll-
off response of Chebyshev topology in 17th order lowpass (LC) and highpass (HC) designs to address the testing industry’s need for fil- ters that can operate at GHz frequencies. This is much higher than traditional brick wall anti-aliasing elliptical function fil- ters which are typically limited to less than 500 MHz. These new LC17 and HC17
Würth Adds to Infrared LED Lineup
WALDENBURG, GERMANY — Würth Elektronik has comple- mented its infrared product range with the new WL-SIQW SMT Infrared QFN LED Waterclear product series. The LEDs in QFN format are avail- able in 2720, 3535 and 3737 packages with different radiant intensities from 125 to 800 mW/sr and in 90°, 120° or 150° beam angles. Depending on the
High-frequency bandpass filters.
www.us-tech.com
filters, while not true brick wall filters, are designed in a way that their steep roll-offs closely resemble brick wall filters. Since
Page 79 TTE Introduces High-Reliability RF Filters
TTE’s new filters are based on Chebyshev topology, they have a slight ripple in the passband and no ripple in the stopband, unlike elliptical designs which have ripple in both the passband and stopband. The filters provide desirable stopband
performance at high frequency with limited passband ripple. The passband to stopband ratio for the
LC17 filter is –50 dBc at 1.19 fo and –60 dBc at 1.27 fo. That ratio for the HC17 filter is –50 dBc at 0.84 fo and –60 dBc at 0.78 fo. The fre- quency range for both filters is 1 MHz to 7
GHz. Standard or custom cases are available. Contact: TTE Filters, One Magnetics
Parkway, Gowanda, NY 14070 % 716-532-2234 E-mail:
dzavac@tte.com Web:
www.tte.com
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