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Products > MM wave Oscillator, Frequency Multiplier/Amplifier

IMPATT Active Frequency Multipliers 26-190 GHz

Features
  • High efficiency
  • Muiltiplication factor up to 25
  • High power output levels
  • Low spurious harmonic content
  • Fast switching
  • Low phase and AM noise
Applications

  • Power sources
  • Electronic tuned power sources
  • Millimeter wave frequency synthesizers
  • Spectroscopy/Radiometry
  • Digital Radio

Description

 

         ELVA–1 series IMPATT Active Frequency Multipliers IAFM are really unique devices providing an outstanding performance in terms of high efficiency and high output power. Available in multiplication factor up to 25 inone device they cover the output frequency range of 20 to 180 GHz using centimeter-wave range source. They are capable of handing very high input power without damage. Different IAFM’s would operate with the same centimeter-wave range pumping source. For example, on the picture above you can see the pumping source (20mW, 7.2775 GHz) and three different multipliers: IAFM-28 (5th harmonic, 36.3875 GHz), IAFM-15 (8th harmonic, 58.2200 GHz) and IAFM-10 (13th harmonic, 94.6075 GHz). The phase and amplitude stability of the output signal defined by the quality of the pumping source. It is possible to achieve Hz resolution on 150 GHz using state-of-the-art synthesized cm-wave source. The frequency multipliers are designed as a module, that consists of centimeter-wave high power preamplifier, a multiplier itself, band-pass filter and isolator. Current stabilizer included for reliable, trouble-free operation. The band-pass filter rejects the side band noise of the source on about -50 dB. That allows to use the device as low noise solid state LO, if intermediate frequency is higher then the frequency of rejection. The input of multiplier is a coaxial connector, and the output is a waveguide flange

Specificifications

Model Number IAFM -28 IAFM -22 IAFM -19 IAFM -15 IAFM -12 IAFM -10 IAFM -08 IAFM -06
Frequency Band Ka Q U V E W F D
Frequency Range, GHz* 26.5-40 33-50  40-60 50-75 60-90 75-110 90-140 110-180
Maximum Power Output**, mW 150 150 120 100 50 30-50 15-30 10-20
Input signal power, mW 30-50 30-50 30-50 30-50 30-50 30-50 30-50 30-50 
Multiplication factor 5-8 6-10 7-10 8-13 10-15 14-18 18-24 19-25
DC Power, V/A

+12/0.6

-12/0.01

+50/0.15

+12/0.6

-12/0.01

+45/0.15

+12/0.6

-12/0.01

+45/0.15

+12/0.2

-12/0.01

+35/0.15

+12/0.6

-12/0.01

+35/0.2

+12/0.6

-12/0.01

+27/0.2

+12/0.6

-12/0.01

+24/0.2

+12/0.6

-12/0.01

+24/0.26

* Operation bandwidth 3-5%. Upon request 10% version is available.

** Values are presented for the middle frequency of the frequency band

Common specifications

 
Output power flatness within the 1% band width (max) 1.5 dB
Rejection of adjacent harmonics (min) 40 dB
AM noise inserted (max) -130 dBc/Hz (white noise)
VSWR 1:1.3
   

              There is no additional noise produced by IAFM-XX in comparing with passive multipliers. It can be estimated using the formula: Noise of pumping source +20Lg(N) dB/Hz. For example, if 7 GHz pumping source has -120dB/Hz on 10 kHz offset from the carrier, after frequency multiplication on a factor of 20 the noise of 140 GHz source on 10 kHz offset will be -120dB/Hz+20Lg(20) = -94 dB/Hz.

         Series IAFM-XX are designed for high reliability and applications in hard environments. The operating temperature range: minus 50 to plus 70 C and life time is equal to 50000 hours. Each model may be produced with the possibility of the fast output power switching. 1 ns time of on/off switching is allowed. 

Optionally the following items would be supplied to meet customer requirements: