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This paper presents a frequency-agile in-band full-duplex (FD) receiver based on a switched-capacitor continuous-mode vector modulator (VM). The passive VM presented in this paper provides simultaneous downmixing, attenuation, and phase shifting and is used to generate a baseband canceler signal for self-interference (SI) cancelation. A prototype FD receiver is implemented in CMOS 130 nm technology. The receiver is tunable from 0.1 to 0.95 GHz. In FD mode at 900 MHz, the receiver has an effective input-referred third-order intercept power (IIP3) of +7 dBm, SI-to-noise-and-distortion-ratio (SINDR) of ≈ +65.3 dB at −27.5 dBm SI in 15 MHz bandwidth, and noise figure (NF) degradation of less than 1 dB. [ABSTRACT FROM AUTHOR]

Dual port, aperture coupled and tapered fed patch antenna with high isolation is proposed for full‐duplex 2.4 GHz ISM applications. This antenna can achieve a measured isolation of around 60 dB at 2.4 GHz and isolation band of 2.3‐2.6 GHz for more than 59.5 dB. Such a high isolation surpasses the isolation performance of dual‐port antennas available in the literature. [ABSTRACT FROM AUTHOR]