Fig.1

Structure diagram of liquid crystal phase shifter antenna unit with cross-polarization suppression structure"

Fig.2

Normalized pattern of 45 ° polarization of antenna"

Fig.3

Simulation results of S parameters"

Fig.4

Phase shift simulation results"

Fig.5

Cross-polarization suppression structure of antenna element"

Fig.6

Phase comparison diagram of radiated electric field between gap coupling structure and cross-polarization suppression structure"

Fig.7

Comparison diagram of radiated electric field amplitude between gap coupling structure and cross polarization suppression structure"

Fig.8

Different angle phase difference of cross polarization and main polarization before and after loading cross polarization suppression structure"

Fig.9

Amplitude difference of different angles of cross polarization and main polarization after loading the cross-polarization suppression structure"

Fig.10

Cross-polarization suppression ratio before and after loading cross-polarization suppression structure"

Fig.11

Schematic diagram of antenna array layout"

Fig.12

Side view of antenna array structure"

Fig.13

Schematic diagram of phase shifting network structure of orthogonal polarization phased array antenna"

Fig.14

Schematic diagram of one-dimensional series parallel phased array antenna"

Fig.15

One-dimensional serial parallel phased array antenna layout"

Fig.16

Principle of two-dimensional series parallel phased array antenna"

Fig.17

Side view of two-dimensional serial parallel liquid crystal phased array antenna structure"

Fig.18

Antenna prototype"

Fig.19

Microwave chamber test of high cross-polarization suppression series parallel combined with orthogonal polarization phased arra antenna"

Fig.20

Measured results of S parameters"

Fig.21

Measured results of 45 °polarization normalized pattern"

Fig.22

Measured results of -45° polarization normalized pattern"

Table 1

Summary of measured performance for E-plane pattern"