Passive harmonic transponders are used in applications where weight and size restrictions are prohibitive to the use of active radio transmitters, e.g., for insect tracking. A typical harmonic transponder tag consists of a wire dipole antenna and a Schottky diode with a parallel inductance. Despite the simplicity in tag circuit, designing lightweight, compact, and efficient harmonic tags are challenging. In this letter, we describe a design that combines the reliability of a printed circuit with the simplicity and small mass of a wire dipole antenna. We study the interplay of individual system parameters and show that optimizing the tag antenna together with the tuning inductance provides further opportunities for tag miniaturization.

中文翻译：

---

用于昆虫跟踪的紧凑型谐波应答器的设计和评估

无源谐波转发器用于重量和尺寸限制禁止使用有源无线电发射器的应用中，例如用于昆虫跟踪。一个典型的谐波应答器标签由一个偶极天线和一个带有并联电感的肖特基二极管组成。尽管标签电路简单，但设计轻便、紧凑和高效的谐波标签具有挑战性。在这封信中，我们描述了一种将印刷电路的可靠性与线偶极天线的简单性和小质量相结合的设计。我们研究了各个系统参数的相互作用，并表明优化标签天线和调谐电感为标签小型化提供了进一步的机会。