LTCC Transmit/Receive X-Band Module with a Phased Array Antenna
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Coupling the Antenna and Circuit Simulations
Any antenna designed in the AWR AXIEM or Analyst EM software is excited by some circuit, which has an effect on the
radiation. As the antenna scans, the input loads change, which affects the PA loads and performance. The in-situ
measurement capability in the AWR Microwave Office software accounts for coupling.
The blue line in the antenna plot on the right in Figure 25 is the effects of the antenna when the model is connected and the
black line within is the standalone without the effects of the model. The software gives designers a major advantage by
enabling them to see the radiation pattern both with and without the circuit.
Figure 25: Radiation pattern, with and without the circuit
Figure 26 is a 3D view of the standalone and circuit-driven antenna radiation pattern. The pattern with the circuit is on the
right and the pattern without the circuit is on the left.
Figure 26: 3D view of the standalone (left) and circuit-driven (right) antenna radiation pattern
