Shortage of LNA? No! AWINIC has full specification coverage

2026-04-30

LNA (low noise amplifier), as the "signal gatekeeper" of the RF front end, directly determines the receiving sensitivity, anti-interference ability and communication stability of the terminal equipment.

Ai has been deeply engaged in the field of LNA for electronics for more than ten years. From FM single point ice breaking to GNSS leading the world, to Bluetooth and 4G/5G comprehensive layout, Ai has gradually built a LNA product matrix covering all scenes and all frequency bands, becoming the benchmark force for RF front-end to break through.

Today, we not only sort out the Advanced History of AI for electronic LNA for more than ten years, but also disassemble the core advantages of each series, give accurate selection scheme, and teach you how to quickly match products and design on the ground, so as to help customers realize product upgrade efficiently.

I. Development History of Ai for Electronic LNA: From Single Point Breakthrough to Full Scene Coverage

Figure 1: The History of the development of electronic LNA.

Second, AI for electronic LNA full range of product matrix: accurate selection according to the scene

AIIS electronic LNA covers the whole scenes of FM, GNSS, Bluetooth, 4G and 5G. Each product is optimized for specific needs. The following products are disassembled according to application scenes to accurately match customer needs:

1. FM LNA: preferred for headphone-free radio

Table 1 FM LNA selection table

2. GNSS LNA: positioning accuracy benchmark (full scene adaptation, including vehicle gauge level)

Table 2 Type selection of GNSS LNA

3. Bluetooth LNA:TWS/wear exclusive (high integration, low power consumption)

Table 3 Bluetooth LNA selection table

4. 4G LTE LNA: medium and high frequency band Main Force (high stability, easy compatibility)

Table 4 LTE LNA selection table

5. 5g LNA Bank: Multi-mode integration solution

Table 5 LNA Bank type selection table

6. Multi-level adjustable gain low frequency LNA

Table 6 low frequency LNA with adjustable gain

7. Satellite Communications broadband LNA

Table 7 LNA selection table for satellite communication

Third, practical operation guide: how to use AI for electronic LNA? Design Points Full Disassembly

Mastering the following design points can quickly realize the stable application of AI for electronic LNA, avoid common problems and improve product performance:

1. Universal design principles (common to all LNA)

Layout priority: LNA must be close to the antenna feed point, away from LCD, FPC, battery and other interference sources, the radio frequency trace as short as possible, less bending, reduce signal loss.
Impedance control: 50Ω impedance matching shall be done for IN/OUT wiring, the ground shall be covered up and down, left and right IN three dimensions, and uniform drilling shall be done to ensure good grounding and avoid signal interference.
Power supply processing: VCC pin is added with filter capacitor, EN pin is added with RC filter, up, down, left and right stereo ground, GND pin is directly connected to the ground hole to the main ground to avoid multilayer board interference.

2. Key points of application by scene (high-frequency demand of customers)

(1)GNSS Application (mobile phone)

Signal link: ANT (antenna) → Pre SAW (front surface acoustic wave filter) → GNSS LNA → Post SAW (rear surface acoustic wave filter) → TR (transceiver)

Fig.2 Application block diagram of GNSS circuit

Key details:

Post SAW is recommended for the Qual **platform reference design. MT** platform can be added according to actual needs.

The L1 band antenna is usually shared with WIFI 2.4G/5G. The L5 antenna can adopt an independent scheme or a common antenna with MIMO WIFI 2.4G/5G or main radio frequency, which is determined according to PCB layout and antenna environment.

Anti-interference skills: increase the isolation of the device, select high suppression Pre SAW, and reserve LC attenuation circuit to avoid B13(787MHz) second harmonic interference.

(2) Bluetooth LNA application (TWS/wearable devices)

Signal link: ANT (antenna) → Bluetooth SAW (surface wave filter) → Bluetooth LNA → TR (transceiver)

Fig.3 Application block diagram of Bluetooth circuit

Key details: AW15019FDR integrated bypass switch, turn on LNA amplification when receiving signals, bypass through when transmitting signals, without adding additional switches, which not only saves PCB space, but also reduces power consumption.
Layout note: LNA is close to the Bluetooth antenna and away from strong interference sources such as audio power amplifiers and charging circuits to ensure the stability of the Bluetooth signal.

(3)5g LNA Bank application (5G terminal)

Signal link: ANT (antenna) → divider → PAMID(PRX)/ DIFEM(DRX)→ LNA BANK → TR (transceiver)
Key details: AW18553TFLR is controlled by MIPI RFFE protocol, which can dynamically switch 5 LNA channels, flexibly adapt to different frequency bands and MIMO requirements, greatly simplify 5G RF front-end design and reduce customer research and development cycle.

Four, customer selection speed matching: according to the terminal type directly corresponding (efficient selection)

Table 8 Customer Selection Table

V. Summary: Ai is an electronic LNA to help upgrade the RF front end

From the ice-breaking of FM LNA in 2011 to now covering the whole scene of FM, GNSS, Bluetooth, 4G and 5G, AI is an electronic LNA with "FM cut-in, GNSS bigger, Bluetooth Breakthrough, 4G upgrade and 5G integration" as its core path, relying on OQ noise reduction, Smart-Linear, technology and other core technologies,Build up technical barriers and improve the product matrix. No matter it is mobile phone, TWS, smart wear, industrial terminal or car Gauge Products, Ai Wei electronic LNA can provide solutions with high cost performance, easy design and high reliability, helping customers to quickly realize product landing and performance upgrade in the whole process.