CHV2242A Ver la hoja de datos (PDF) - United Monolithic Semiconductors

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CHV2242A

Q-band VCO based on Ku-band Oscillator and Q-band Multiplier

United Monolithic Semiconductors 

Q-band VCO

CHV2242a

Proposed External Medium Q Resonator

This resonator can be used for 77GHz FMCW-based radar applications.

The chip has been especially designed to be coupled to a medium Q resonator

printed on temperature compensated soft substrate. The resonance is given by

three half wave coupled lines. The length of the coupler (L) gives the centre

frequency and the space between the coupled lines (s) gives the bandwidth. For

easy connection and phase considerations half wave lines are at the input and

output of the filter. All the recommended dimensions are given in the following

drawing.

The main substrate characteristics are the following (ROGERS R03003)

Dielectric

constant

3

Thickness

250µm

Dissipation

factor (10GHz)

0.0013

Thermal

coefficient

13 ppm/°C

The typical resonator length (L) is 7.35mm for a coupling value (s) of 0.4mm and

for a frequency of 38.25GHz. However this L value should have to be adjusted

depending on the final chip environment.

Other possibility is ARLON/CLTE substrate. (L is 7.27mm for s=0.4mm)

Ref. : DSCHV22421074 -15-Mar.-01

5/8

Specifications subject to change without notice

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