QM0622A QUADRATURE MODULATOR

600 – 2200 MHz

P ol yp h a s e M i c r ow a ve I nc . 1983 S L i be r t y D r i ve

B l oo m in g to n , IN 47 403

U S A

© 2 0 0 8 P o l y p h a s e M i c r o w a v e I n c .

T e l : + 1 ( 81 2 ) 3 2 3 - 87 08

F a x : + 1 (8 12 ) 3 2 3 - 87 09

W eb : ww w. p o l yp h as e m ic r o wave . c o m

0°

90°

LO

I I Q Q

RF

Σ

FEATURES LO/RF Frequency: 600 – 2200 MHz Input IP3: +16 dBm Noise Floor: -173 dBm/Hz Sideband Suppression: -35 dBc LO Leakage: -55 dBm LO Power: +14 dBm

DESCRIPTION

The QM0622A is a quadrature (I/Q) modulator optimized

for direct modulation of an RF carrier. Differential I and Q

inputs are mixed with the local oscillator (LO) to produce a

modulated RF output.

Internally matched lowpass filters provide anti-alias

functionality for removing Nyquist images and wideband

noise when interfacing to high-speed D/A converters.

For more information on interfacing the QM0622A to high-

speed D/A converters and single-ended sources, please

see Application Note 101A, “Driving the QM Series

Quadrature Modulators.”

TYPICAL APPLICATION: DIRECT CONVERSION TRANSMITTER

ROHDE & SCHWARZAFQ100A

I I Q

RF

Σ

LO

90°

0°

Q

BPF

QM0622A

P ol yp h a s e M i c r ow a ve I nc . 1983 S L i be r t y D r i ve

B l oo m in g to n , IN 47 403

U S A

© 2 0 0 8 P o l y p h a s e M i c r o w a v e I n c .

T e l : + 1 ( 81 2 ) 3 2 3 - 87 08

F a x : + 1 (8 12 ) 3 2 3 - 87 09

W eb : ww w. p o l yp h as e m ic r o wave . c o m

ELECTRICAL SPECIFICATIONS Test Condi t ions: +25°C, LO = +14 dBm, I /Q inputs = 0 dBm tota l @ 100 kHz un less otherwise noted.

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Frequency Range 600 2200 MHz LO Power +13 +14 +16 dBm LO VSWR 1.5:1 Ratio RF VSWR 2.0:1 Ratio I/Q Baseband Filter Bandwidth1 <1 dB Flatness DC 275 MHz I/Q Baseband Filter Stop Band1 >25 dB Rejection 450 5000 MHz I/Q Differential Input Impedance 100 Ω

Conversion Loss 7.5 10.5 dB Input IP3 2-Tone, Δf = 1 MHz +16 dBm Input P1dB +7 dBm LO Leakage at RF Port No RF input drive -55 -40 dBm LO-IF Isolation No RF input drive 70 dB Sideband Suppression2 -35 -28 dBc Amplitude Imbalance -0.5 ±0.15 +0.5 dB Quadrature Phase Error -4 ±1 +4 DegreeOutput Noise Floor -173 dBm/HzOperating Temperature Range -40 +85 ºC LO/RF Input Power w/o Damage +25 dBm

Notes: 1 . Standard lowpass f i l te rs . Contact factory for o ther opt ions.

2 . For upper s ideband operat ion: sin(t)Q sin(t),Q cos(t),I cos(t),I −==−==

CASE DRAWING

1.575 [40.01]

.625 [15.88]

.25 [6.36]

.66 [16.76]

.66 [16.76].66 [16.76]

.435 [11.05]

.25 [6.36]

Ø.096 THRU 4 PLACESMOUNTING HOLES FIELD REPLACEABLE

SMA FEMALE 6 PLACES

.25 [6.36]

2.85 [72.39]

2.85 [72.39]

.094 [2.39]

1.50 [38.10]

.675 [17.15]

1.575 [40.01]

QM0622A

P ol yp h a s e M i c r ow a ve I nc . 1983 S L i be r t y D r i ve

B l oo m in g to n , IN 47 403

U S A

© 2 0 0 8 P o l y p h a s e M i c r o w a v e I n c .

T e l : + 1 ( 81 2 ) 3 2 3 - 87 08

F a x : + 1 (8 12 ) 3 2 3 - 87 09

W eb : ww w. p o l yp h as e m ic r o wave . c o m

TYPICAL PERFORMANCE CHARACTERISTICS Standard Test Condi t ions: +25°C, LO = +14 dBm, I /Q inputs = 0 dBm tota l @ 100 kHz.

Input IP3 Conversion Loss

Quadrature Phase Error Ampl i tude Imbalance Sideband Suppression

LO Leakage at RF Port

0

2

4

6

8

10

12

600 1000 1400 1800 2200

Con

vers

ion

Loss

(dB)

Frequency (MHz)

0

5

10

15

20

25

30

35

600 1000 1400 1800 2200

Inpu

t IP

3 (d

Bm

)

Frequency (MHz)

-70

-60

-50

-40

-30

-20

-10

0

600 1000 1400 1800 2200

LO L

eaka

ge (

dBm

)

Frequency (MHz)

-0.8

-0.6

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

600 1000 1400 1800 2200

Imba

lanc

e (d

B)

Frequency (MHz)

-8

-6

-4

-2

0

2

4

6

8

600 1000 1400 1800 2200

Phas

e E

rror

(Deg

.)

Frequency (MHz)

-70

-60

-50

-40

-30

-20

-10

0

600 1000 1400 1800 2200

Supp

ress

ion

(dBc

)

Frequency (MHz)