5

5 - 10

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20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

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Input Compression vs Frequency *

Input Compression vs Bias at 6 GHz

Input Third Order Intercept vs Frequency *

Input Third Order Intercept vs Bias at 6 GHz

Suggested TTL Driver for a Bi-Phase Modulator

Notes

1. V

A

Alternates Between

+ 2.4 V

dc

± I

A

= 2.4 - 0.6 = ± 5 mA

360 Ohm

2. HCT04 and HC04 are QMOS HEX

Inverters.

*R

1

=300 to 620 ± 2% Select R

1

To

Supply ±3 to ±6 mA to the IF Port.

* (For 5 mA Bias Current)

2.2K

TTL

VCC

GND

GND

VCC

HCT04

HC04

.01 uF

.01 uF

-2.5 Vdc

+2.5 Vdc

+5 Vdc

*R 1

MODULATOR

I, Q PORTS

HITTITE

MODULATOR

VA

IA

V Z = 2V

0.6V

0

2

4

6

8

10

12

45

67

8

CARRIER FREQUENCY (GHz)

0

2

4

6

8

10

12

14

0

1

2

345

6

7

8

910

BIAS CURRENT (mA)

CARRIER FREQUENCY (GHz)

0

5

10

15

20

25

0

1

23

4

567

8

9

10

BIAS CURRENT (mA)

HMC136

v03.0909

GaAs MMIC BI-PHASE

MODULATOR, 4 - 8 GHz