Introduction: Antenna

In the era of a connected world, whether it's Bluetooth earphones, WiFi routers, industrial IoT gateways or remote monitoring devices, one key component is indispensable — the antenna. The antenna is the "throat" of a wireless communication system, converting high-frequency current into spatial electromagnetic waves (transmit), or spatial electromagnetic waves into high-frequency current (receive). The antenna's performance directly determines communication range, signal quality and system stability.

Based on the rich antenna product line and technical documentation of Chengdu EBYTE Electronic Technology Co., Ltd. (EBYTE), this article presents the Top 10 popular antenna types with in-depth analysis of their working principles, pros and cons and typical application scenarios — helping you make the best choice in real projects.

 Top 10 Popular Antenna Types

Ceramic Antenna

• Working principle: Uses the high dielectric constant of ceramic materials to shrink antenna size to an extremely small volume. Two types: block ceramic antennas (sintered ceramic block with printed metal conductor) and multilayer ceramic antennas (low-temperature co-fired multilayer ceramic lamination).

• Pros: Extremely small footprint, good performance, low dielectric loss — ideal for low-power Bluetooth modules.

• Cons: Hard to achieve multi-band; not suitable for 4G/5G products; high PCB clearance requirement; not suitable for extremely compact products.

• Recommended product: TX2400-NP-5010 (flexible antenna, 2.4G, 2.0dBi gain, 10x50mm, IPEX connector)

• Applications: Bluetooth earphones, wearables, smart sensors, IoT terminals

PCB Antenna (On-Board Antenna)

• Working principle: An antenna pattern is designed directly on the PCB as part of the wireless transceiver.

• Pros: Small footprint, low cost, no separate assembly, durable, easy final assembly.

• Cons: Radiation pattern hard to make omnidirectional, high insertion loss, relatively low efficiency, susceptible to motherboard interference; single-band only (e.g. Bluetooth, WiFi); batch-to-batch performance variation.

• Recommended product: E01-2G4M01S1B module (on-board PCB antenna, built-in antenna, no external antenna needed)

• Applications: Bluetooth modules, WiFi modules, ZigBee modules, low-cost IoT devices

Flexible FPC Antenna

• Working principle: Made of flexible printed circuit (FPC) material; can be bent and folded to fit various irregular installation spaces.

• Pros: Flexible, easy installation, thin, lightweight, ideal for space-constrained scenarios.

• Cons: Relatively fixed gain; must be attached to a non-metallic surface; performance heavily affected by installation position.

• Recommended product: TX2400-NP-5010 (flexible FPC soft antenna, 2.4G, 2.0dBi gain, IPEX connector)

• Applications: Smart home devices, router built-in antennas, portable devices, drones

Rubber Duck Antenna (Ultra-Short Straight Type)

• Working principle: A conventional external antenna composed of a metal conductor and an external plastic housing, with omnidirectional radiation characteristics.

• Pros: Simple structure, low cost, omnidirectional, easy installation, uniform signal coverage.

• Cons: Relatively low gain (typically 2.0-2.5dBi), suited for short-distance communication.

• Recommended products: TX2400-JZ-3 (2.4G, 2.0dBi, 30mm, SMA-J), TX2400-JZ-5 (2.4G, 2.0dBi, 50mm, SMA-J)

• Applications: Wireless routers, CPE terminals, AP devices, home IoT gateways

Rubber Duck Antenna (Bent / Bendable Type)

• Working principle: Based on the straight rubber duck antenna, adds a bendable joint allowing the antenna body to form an angle with the connector, adapting to different installation orientations.

• Pros: Flexible mounting orientation, horizontal or vertical installation, adjustable signal coverage angle.

• Cons: The bend point may affect signal consistency; long-term bending may pose mechanical fatigue risk.

• Recommended products: TX2400-JW-5 (fixed bend, 2.4G, 2.0dBi, 50mm, SMA-J), TX2400-JK-11 (bendable rubber duck, 2.4G, 2.5dBi, 110mm, SMA-J)

• Applications: Industrial routers, vehicle-mounted devices, wall-mounted APs, cabinet equipment

Magnetic Base Antenna

• Working principle: Fixed to metal surfaces via a strong magnetic base at the bottom; typically offers higher gain, suited for long-distance communication.

• Pros: High gain (3.0-6.0dBi), easy magnetic mounting, good directivity, ideal for long-range communication.

• Cons: Larger size, requires a metal surface for attachment, relatively higher cost.

• Recommended product: TX2400-XPL-150 (2.4G, 3.5dBi, 150mm, 150cm cable, SMA-J)

• Applications: Industrial DTUs, remote monitoring, outdoor base stations, vehicle-mounted communication

Fiberglass Antenna

• Working principle: Uses fiberglass-reinforced plastic (FRP) as the housing with a high-gain antenna element inside, offering excellent weather resistance and corrosion resistance.

• Pros: High gain, strong weather resistance, corrosion resistance, long service life, suited for long-term outdoor use.

• Cons: Large size, high cost, relatively complex installation.

• Recommended product: TX433-BLG-20 (433M, 4.0dBi, 200mm*Φ20mm, N-J connector)

• Applications: Outdoor base stations, long-distance data transmission, agricultural IoT, oil/gas field monitoring

Panel Directional Antenna

• Working principle: Uses an array antenna design to concentrate signals in a specific direction, providing high gain and good directivity.

• Pros: Extremely high gain, good directivity, strong interference immunity, long communication distance.

• Cons: Narrow coverage, requires precise alignment, complex installation and adjustment.

• Recommended product: TX2400-PB-2222 (2.4G, 16.0dBi, 21821830mm, SMA-J, 3m cable)

• Applications: Point-to-point communication, long-range WiFi bridging, security surveillance, drone video transmission

Yagi Antenna

• Working principle: Composed of one active element and multiple passive reflector/director elements, providing high gain and extremely strong directivity, commonly used for directional communication.

• Pros: Extremely high gain, extremely strong directivity, extremely strong interference immunity.

• Cons: Large size, too strong directivity, complex installation and adjustment, high cost.

• Recommended product: TX2400-BM-18 (2.4G, 18.0dBi, 760*95mm, SMA-J, 3m cable)

• Applications: Long-range point-to-point communication, wireless surveillance, radio direction finding, field communication

Multi-Band Antenna (4G/LTE/NB-IoT/GPRS/GSM)

• Working principle: Covers multiple communication bands (e.g. 700MHz-2.7GHz) to meet different network standards, typically using wideband design.

• Pros: Multi-purpose, wide band coverage, strong compatibility, ideal for multi-mode communication devices.

• Cons: Relatively lower gain, larger size, high design complexity.

• Recommended product: TX4G-JKS-20 (bendable antenna, 4G/LTE, 5.0dBi, SMA-J)

• Applications: 4G/5G routers, industrial gateways, smart metering, vehicle-mounted T-BOX

Antenna Type Comparison Summary

Antenna Selection Guide: How to Choose the Right Antenna?

 Select by Communication Band

Select by Communication Distance

Select by Installation Environment

The antenna is the most easily overlooked yet most critical part of a wireless communication system. Choosing the right antenna can significantly improve communication range, signal quality and system reliability — getting twice the result with half the effort; conversely, a poor choice can lead to communication failures and system instability.

Core recommendations:

• Band matching: Always choose an antenna whose operating band exactly matches the communication module.

• Gain adaptation: Choose gain based on communication distance requirements; higher gain is not always better — balance directivity and coverage.

• Connector compatibility: Ensure the antenna connector (SMA-J, IPEX, solder, etc.) matches the module interface.

• Environment adaptation: Consider the installation environment (indoor/outdoor, space, temperature and humidity) when choosing antenna type and material.

• Clearance area: For ceramic and PCB antennas, always ensure clearance around the antenna, avoiding copper pours and metal blocking.

  
  

Chengdu EBYTE Electronic Technology Co., Ltd. offers a rich antenna product line from 2.4GHz to 5.8GHz, from ceramic antennas to high-gain magnetic base antennas, meeting all kinds of IoT communication needs. Choosing EBYTE means choosing a professional, reliable wireless communication solution.