7GHz帯超小型FPU送信機 : 無線・光伝送
1992 年 16 巻 17 号 p. 31-36
詳細
1992 年 16 巻 17 号 p. 31-36
A compact, lightweight and low-cost FPU transmitter was developed for emergency news gatherings. It consists of a 7-GHz-band FET direct modulator and a flat panel antenna. The modulator uses a FET, a dielectric resonator (DR) and two varactors. The output power of 22dBm, and the DG and the DP of less then 3% and 2° are obtained, respectively. The flat panel antenna is constructed by four rectangular patches on a teflonglass substrate and a gain of 13 dBi is obtained.
