A new method for the dynamic range enhancement of the PIM-producing patch antenna with diode is proposed, and its effectiveness is verified by experiment. In 2 GHz-band experiment, we shows that the size reduction of the diode-mounted hole has an equivalent effect of the diode-rotation in the previous work, and contributes to the linearity improvement in the high power excitation. Through the testing result of 800 MHz-band antenna, it is demonstrated that good linearity is obtained up to 43 dBm excitation in swept-power test when D-h=4.6 mm. The frequency characteristics of the employed diode are also verified through a frequency-swept test. The resultant PIM-level variation is less than 2 dB, which is negligibly small in comparison with the difference between 800 MHz- and 2 GHz-antennas.