There are many detector chip out there. The venerable AD8307 with greater than 80 db dynamic range goes from almost DC to 700 mhz. Linear Technology has several currently listed. Their LTC5508 covers 300 to greater than 7 GHz.

Al


On Oct 17, 2013, at 3:38 PM, Richard Karlquist <rich...@karlquist.com> wrote:

If you are below 80 MHz, Linear Technologies makes a thermal power meter
on a chip.

Alas, the LT1088 is no longer made.

http://www.linear.com/product/LT1088

Best regards,
-Steve

--
Steve Byan <steveb...@me.com>
Littleton, MA 01460


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