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MicroAmp MB-13 Circuit Board

For Hittite VCOs in LP4E Packages

The MicroAmp MB-13 circuit board is designed for rapid prototyping of microwave VCOs using Hittite Microwave devices in LP4E

packages with RF outputs on pin 16, tuning controls on pin 22, and bias on pin 20. This board will fit the MicroAmp MH series of

connectorized housings that allow it to be used as a stand-alone oscillator or cascaded with other MicroAmp boards for added versa-

tility. Boards are fabricated from a high-performance 13 mil thick RO-4350 laminate with RoHS compatible ENIG plating (electroless

nickel/immersion gold) on both the component side and the solid bottom ground plane. The board measures 0.490" x 0.590" and

mounts into the housing with four or six #1-72 screws for optimal high frequency grounding. Oscillator circuits can be easily designed

and assembled with standard surface-mount passive components. It includes provisions for DC bias bypassing and configuring the

tuning pin to be connected to either an SMA input connector or feed-through in the housing. Pads for the input/output connectors

allow the SMA center pins to be easily soldered to the board after it is installed into the housing, as well as large pads to connect the

bias voltage and tuning input pins. The tuning pin has the option of connecting to the J1 SMA connector or to a feed-through by

preferential installation of R1.

REF

SIZE

FUNCTION

C1

0402

Bias bypass

C2

0805

Bias bypass

R1

0402

Tuning pin connection

U1

LP4E

VCO

J1

Coax tuning input (pin 22)

J2

+ Bias (pin 20)

J3

RF output (pin 16)

J4

R1 tuning input (pin 22)

• Fits Hittite Microwave VCOs

with LP4E packages

• Usable with HMC384-386, 388-391,

416, 429-431, 466, 505, 506, 532 VCOs

• VCOs frequencies from 2-8 GHz

• Uses standard SMD passive parts

• RO-4350 board material

• Fits MicroAmp MH-series housings

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