HMC8193LC4TR-R5 datasheet(32/36 Pages) AD

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HMC8193

Data Sheet

Rev. B | Page 32 of 36

THEORY OF OPERATION

The HMC8193 is a passive, wideband, I/Q, MMIC mixer that

can be used as an image rejection mixer or as a single-sideband

upconverter for transmitter operations. With an RF and LO

range of 2.5 GHz to 8.5 GHz, as well as an IF bandwidth of dc to

4 GHz, the HMC8193 is ideal for applications requiring wide

frequency range, excellent RF performance, and a simple design

that includes a few components and a small PCB footprint. A single

HMC8193 can replace multiple narrow-band mixers in a design.

The inherent I/Q architecture of the HMC8193 offers excellent

image rejection and sideband rejection, thereby eliminating the

need for expensive filtering of unwanted sidebands. The double

balanced architecture of the mixer also provides excellent LO to

RF and LO to IF isolation and reduces the effect of LO leakage

to ensure signal integrity.

The HMC8193 does not require any dc power sources because

it is a passive mixer. The device offers a lower noise figure than

an active mixer, ensuring superior dynamic range for high

performance and precision applications.

The HMC8193 is fabricated on a GaAs MESFET process and

uses Analog Devices mixer cells and a 90° hybrid. The HMC8193 is

available in a compact, 4 mm × 4 mm, 24-terminal LCC package

and operates over a −40°C to +85°C temperature range. An

evaluation board for the HMC8193 is also available from

Analog Devices.

For both upconversion and downconversion, an external 90°

hybrid is required. See the Applications Information section for

information regarding interfacing with an external 90° hybrid

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