Active antenna

About: Active antenna is a research topic. Over the lifetime, 2246 publications have been published within this topic receiving 26493 citations.

Phase-interpolation locking: new technique for beam-steered active antennas

Abstract: A new method of phase control for beam steering an active antenna array is suggested. Only half the normal number of phase shifters are needed, but there is a limit to he angle throught whih the beam ca be steered by this technique.

Array antenna, method and device for transmitting and receiving signal

Abstract: The present application discloses an array antenna, a method and a device for transmitting and receiving a signal. The array antenna includes at least two active antennas, wherein each active antenna is surrounded by at least two different parasitic antennas, respective parasitic antennas are respectively coupled to controllable loads, and the controllable loads are respectively coupled to a control circuit. With the arrangement of at least two active antennas, when a channel is in a good state, channel capacity can be adjusted by adjusting the controllable loads coupled to the parasitic antennas; and when the channel is not in the good state, the bit error ratio can be reduced by both adjusting the controllable loads coupled to the parasitic antennas and adjusting transmitting directional diagrams of the active antennas according to an adjustment vector, meanwhile, miniaturization can also be realized.

High gain V-band active-integrated antenna transmitter using Darlington pair VCO in 0.13 μm CMOS process

Abstract: An on-chip integrated antenna oscillator-transmitter at 66 GHz for frequency modulation short range transmission is presented. The oscillator-transmitter comprises a high gain differential-fed linear tapered slot antenna and a low phase noise differential Darlington pair voltage controlled oscillator (VCO) with intrinsic junction varactors. The transmitter achieves a high antenna gain of 7.6 dBi and a low phase noise of ߝ 114 dBc/Hz at 10 MHz offset at 9 mW power consumption. The figure of merit (FOM) of the VCO is ߝ 181 dBc/Hz at 10 MHz offset. The measured receiver power is ߝ 38 dBm at a separated distance of 90 cm at 66 GHz. The fabricated oscillator-transmitter occupies a compact size of 0.61 mm 2 .

Over the Air Testing and Error Analysis of 5G Active Antenna System Base Station in Compact Antenna Test Range

Abstract: These days, several communication standardization committees are developing suitable and practical measurement methods for the Over the Air (OTA) testing of 5G non-connectorized base stations. Among the OTA testing methods, Compact Antenna Test Range (CATR) is very attractive for the direct testing of the far field Radio Frequency (RF) parameters and the wide frequency ranges, allowing the Active Antenna System (AAS) Base Station testing. The key OTA parameter of the AAS Base Station, such as Equivalent Isotropic Radiated Power (EIRP), Total Radiated Power (TRP), Equivalent Isotropic Sensitivity (EIS), has been studied in the introduced CATR system. Moreover, the measurement error assessment has been studied and analyzed with the CATR system. With the development of the 5G New Radio technology, the measurement technology and error analysis of the 5G AAS base stations are facing severe challenges. OTA testing will need to operate new requirements of the 5G AAS base stations.

Active Antenna Subsystem Integration of Steerable Boresight Radiation Beams for 5G Millimeter Wave Applications by System-in-Packaging Process

Abstract: In this paper, an active antenna-in-package (AiP) design at millimeter wave frequencies (mmW) is presented for user equipment (UE) and customer-premises equipment (CPE) applications. In particular, the UE and CPE AiP implements 4 × 4 and 6 × 6 microstrip antenna elements on the stacked substrates of conventional system-in-package process to realize the desired gains for 5G applications. Within a 19 × 19 mm2 area, we are able to achieve -10 dB reflection coefficient bands of 24.25-29.5 and 37-43.5 GHz by simulations for the two most popular 5G frequency bands, where the simulated gains are 13.7 and 15.22 dBi, respectively. The beam scan range is up to ±40o. On the other hand, the CPE AiP is designed on a 33 × 33 mm2 area, where the maximum gains are 18.83 and 21.25dBi at 28 and 39 GHz, respectively.