Abstract
ABSTRACT The paper presents a novel miniaturized (1.2 λ0 × 0.5 λ0 × 0.026 λ0 ) frequency reconfigurable travelling wave antenna (TWA) operating at 8–12 GHz band. The antenna uses PIN diodes arranged in a novel configuration to produce frequency reconfigurability and operates at single frequency bands of 8.5, 9, 9.35, 9.9, 10.45 and 11 GHz with an average bandwidth of 1 GHz based on different switch configurations. The proposed antenna demonstrates an efficiency>80% for the operating frequency in different stations while maintaining a stable average gain of 8.5 dBi. The antenna’s compact nature and high gain make it suitable for several applications within modern satellite communication devices and radar systems. The proposed antenna is designed and tested for its conformality using CST Microwave-Studio. The proposed design is further verified with a fabricated prototype measured in an anechoic chamber, agreeing well with the simulated results.
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