Link Microtek offers new digitally tunable filters to boost tactical-radio

MtronPTI filters are available in eight different models covering frequency ranges from 30MHz to 1GHz, each with 250 tuning steps

Link Microtek offers new digitally tunable filters to boost tactical-radio

The new TF010x series of digitally tunable bandpass filters from Link Microtek offer military communications systems designers a low-loss frequency-hopping capability for software-defined radios.

Designed and manufactured by MtronPTI, the filters are available in eight different models covering frequency ranges from 30MHz to 1GHz, each with 250 tuning steps, 8-bit parallel tuning control and a switching time of less than 25µs.

The TF010x filters are particularly suitable for use in vehicle adapter amplifiers, which extend the range of a typical hand-held or manpack tactical radio to 40km or more. As well as providing frequency-hopping functionality, the digitally tunable filters reduce co-site interference on the transmit side by limiting out-of-band emission and increase sensitivity on the receive side by blocking nearby off-channel transmissions.

Passband insertion loss is typically less than 3.6dB, and third-order intercept (IP3) is specified as +45dBm minimum. In-band power handling is 1.25W, while out-of-band power can be up to 5W at +/-10% off the tuned frequency.

Housed in an industry-standard 42-pin sealed package measuring 58.4 x 35.6 x 15.2mm, the TF010x series has an operating temperature range of -40 to 85degC. Custom frequency ranges, start/stop frequencies, bandwidths, blanking and bypass modes are available on request, the company said.

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