Isolation Improvement of a Microstrip Patch Array Antenna for WCDMA Indoor Repeater Applications

Table 2

Simulated 𝑆-parameters for the MS/NRI coupled-line coupler.

𝑆-parameter	1.95 GHz [dB]	2.14 GHz [dB]
𝑆11	−12.5	−13.4
𝑆21	−3.3	−3.6
𝑆31	−3.6	−3.1
𝑆41	−27.5	−32.5