Product category:
Communications ICs (Wireless)
News Release from: Labtech Microwave | Subject: LMS902 SPDT
Edited by the Electronicstalk Editorial
Team on 26 February 2008
High-power switch preserves switching
speed
Labtech Microwave's LMS902 SPDT provides less than 0.8dB insertion loss and more than 45dB of isolation and has a switching speed of less than 1us.
Designed for harsh environments, Labtech Microwave's LMS902 SPDT (single pole double throw) narrowband switch operates in the 1 to 1.1GHz microwave range and has a power handling capacity of 500W peak The high-power switch is aimed at the IFF (identification friend and foe) market
This article was originally published on Electronicstalk on 30 May 2008 at 8.00am (UK)
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The design provides less than 0.8dB insertion loss and more than 45dB of isolation and has a switching speed of less than 1us.
The RF power is not applied during switching.
Alistair Frier, Business Development Manager of Labtech Microwave said: "Prior to the LMS902 our family of PIN (positive intrinsic negative) switches was aimed at the low and medium power, wideband switch markets".
"The technical challenge was to combine the high power with acceptable switching speed".
"High power normally implies large devices to handle the associated current, which in turn leads to high capacitance components".
"This capacitance has to be charged or discharged to operate the device, placing constraints on the drive circuitry, which is optimised to achieve the desired switching time".
"In addition, to obtain high power it is usually necessary to move to an all-shunt design so that all devices can be mounted directly on the heat dissipating surface to reduce thermal effects and there is no series device limiting the power handing capacity".
"This has been achieved with the LMS902".
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