S-Band Radar LDMOS
MPA stands for Miniaturized Power Amplifier. Integra’s MPA devices are completely impedance matched to 50 ohms. This makes them very easy to use. At their launch the LDMOS based MPA devices have been characterized for simple pulsed operation (100us, 10%) with low and constant quiescent current IDQ = 10mA. As with any typical LDMOS device, they can operate under nearly any pulse width and duty factor combination and also under biasing conditions ranging from class B through class A.
The initial LDMOS MPA device releases consist of 15 and 30 watt devices for two S-Band frequency bands: 2.7-3.1GHz and 3.0-3.5GHz. The devices are completely matched to 50 ohms over these instantaneous operating frequencies.
Unlike common base bipolar devices operating in class C mode these LDMOS devices can be used at less than their rated output power. For example, the MPAL3035M15 can be used at power output levels from its rated 15W (typically 18W) down to 5W and even lower with good pulse fidelity. This characteristic makes them very flexible.
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S-Band Radar Bipolar
Integra’s initial MPA (Miniaturized Power Amplifier) offering in silicon bipolar format is the MPAB3134M40. This device is a typical common base bipolar operating in class C mode. It is completely impedance matched to 50 ohms internal to the package. No external impedance matching circuitry is required. It operates over the instantaneous frequency band of 3.1-3.4GHz. It typically exhibits 50 watts of peak output power.
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