Analysis and Design of a Compact Dual-Band Directional Antenna
Metamaterial-Inspired Engineering of Antennas
Dual-Band Circularly Polarized Microstrip RFID Reader Antenna Using Metamaterial Branch-Line Coupler
Wideband Single-Layer 90 $^{\circ}$ Phase Shifter Using Stepped Impedance Open Stub and Coupled-Line With Weak Coupling
Dual-Band Circularly Polarized Rotated Patch Antenna With a Parasitic Circular Patch Loading
Dual-Band Circularly Polarized Annular-Ring Microstrip Antenna for GNSS Applications