Zuolan Microelectronics debuted at the Shenzhen International Electronics Show, focusing on mid-to-high-end RF filters

On August 25, the three-day ELEXCON 2023 Shenzhen International Electronics Exhibition concluded successfully at the Shenzhen Convention and Exhibition Center (Futian). From chip design to packaging and testing, from intelligent design to integration, the Shenzhen International Electronics Show presented more than a thousand popular products in 25+ categories. The exhibition site was bustling, with exhibiting brands and visitors from all over the world gathering together. Zuolan Microelectronics, a supplier of RF front-end devices, appeared at this exhibition with a variety of high-performance RF filter products and overall solutions, and conducted in-depth product discussions and exchanges with the audience.

Exhibition site and audience communication

Focusing on mid-to-high-end RF front-end devices, multiple products were unveiled at the exhibition

Zuolan Microelectronics has always focused on the research and development of mid-to-high-end RF front-end devices. At this exhibition, it displayed a variety of high-performance RF filters such as TX/RX SAW filter series, TC-SAW series, PESAW series, PEBAW series, and RF front-end module series. device products, fully demonstrating the company's innovative technology and R&D strength.

In addition to the SAW series and TC-SAW series, Zuolan Microelectronics mainly brought new PESAW series products B28F, B25, B3 and other high-performance RF filter products at this exhibition. The high-performance filter PESAW B28F duplex released in June Take the device as an example. This product has the characteristics of high Q value, low loss, small temperature drift, and high power resistance.

Product display box

The input power of B28F duplexer reaches 31dBm@5000h, 50℃, the temperature drift coefficient at key indicators is close to 0ppm/k, TX in-band insertion loss -1.6dB, RX -2.0dB, isolation -55dB or more, B28F The duplexer has excellent in-band insertion loss, out-of-band suppression and isolation. Its comprehensive performance indicators are domestically leading and comparable to world-class products.

Zuolan Microelectronics PESAW B28F duplexer performance curve

At present, Zuolan Microelectronics uses SAW as its main technology path. For SAW, TC-SAW, PESAW and other technical routes, it continues to extend and lay out in terms of processes, materials, etc., and reduces the size by optimizing the design of SAW devices without increasing the process conditions. Next, by optimizing the interdigital parameters, the lateral leakage mode is suppressed and the Q value technology is stabilized. PESAW series products have applied for a number of patents, and the frequency can be extended to above 3G. Zuolan Microelectronics will continue to launch various high-performance index products to meet the needs of different customers.

Continue to accumulate technology and develop in the direction of miniaturization, high frequency, and modularization

In the entire radio frequency chip track, the radio frequency front-end industry is huge and the market is growing rapidly. As people's requirements for mobile communications are getting higher and higher, full-screen and thinner mobile phones, high-frequency communications, and frequency resource congestion are all Higher requirements are put forward for the performance of filters. Filters that are suitable for high-frequency communications, have good thermal stability, are small in size, and are highly integrated will be the main development direction in the future.

In terms of miniaturization, Zuolan Microelectronics' 1612 size B5 band duplexer has an input power of 31dBm, a typical TX insertion loss of 1.3dB, and a typical RX insertion loss of 1.7dB. The isolation performance is equivalent to that of foreign brand manufacturers. Out-of-band rejection also meets end market needs. The B5, B12, and B20 small-size duplex products developed by Zuolan Microelectronics all have excellent performance such as low insertion loss and high power.

In terms of high frequency, Zuolan Microelectronics continues to iterate and optimize technology and processes from SAW to TC-SAW to PESAW and PEBAW. The n78 PEBAW filter launched in 2022 is suitable for both 5G small base stations and It is used in high-quality 5G mobile smart terminals and has the characteristics of small size, low insertion loss, good out-of-band suppression, and high power. Its passband frequency is 3400-3600MHz, the maximum input power reaches 33dBm, and it supports operating temperature range of -40℃ to +95℃. Among them, the 1.4mm x 1.1mm package size is suitable for small base stations, while the smaller size 1.1mm x 0.9mm can be applied to 5G mobile smart terminals.

In terms of modularization, the module products currently provided by domestic RF device manufacturers are basically low-integrated and have almost no product barriers. Therefore, Zuolan Microelectronics continues to accumulate technology based on market demands and hot spots, constantly overcomes technical problems, and actively promotes highly integrated self-developed DiFEM module products.

Starting in 2022, Zuolan Microelectronics has entered the modular "camp" and launched two diversity antenna RF link DiFEM module products that integrate RF switches and filters - SPDM001 and SPDM003: the former diversity receiving module adopts LGA package, package size 3.2mm*3.0mm; the latter diversity receiving module also uses LGA package, package size 3.7mm*3.2mm. Both products feature high integration, strong reliability, and support for CA carrier aggregation, and have been well received by customers in applications.

Zuolan Microelectronics 1612 size B5 band duplexer performance curve

(Power +31.0dBm 5000h +50deg.C)

Zuolan Microelectronics 1612 size B12 band duplexer performance curve

(Power +30.5dBm 5000h +50deg.C)

With the implementation of 5G technology, the market's requirements for RF filters continue to increase, and the demand for high-performance RF filters is also increasing. In the future, Zuolan Microelectronics will focus on the general trend of miniaturization, integration, and modularization of RF front-ends. , continue to upgrade product technology and provide partners with more high-performance RF filter products.