Integrated Filtering Microstrip Duplex Antenna Array with High Isolation

Figure 4

Simulated -parameter and input impedance of Tx BSF: (a) -parameter of the BSFs with and without transformer, (b) input impedance of the BSF without transformer, (c) input impedance of the BSF with transformer ( 100 Ω, 10 Ω, , ).

(a)

(b)

(c)