A radar power amplifier module had two PA transistors burn out in succession during testing. After checking the power supply and thermal design, engineers found that the root cause was load mismatch at the antenna port causing reflected power to feed back – a problem that could have been avoided if a high-isolation coaxial isolator had been installed at the output. The coaxial isolator is precisely the "one-way valve" in the RF signal chain.
SHINHOM's Coaxial Isolators offer three core technologies – 0.02-40GHz wideband coverage, 12-70dB high isolation, and -55°C to +125°C wide-temperature operation – combined with low insertion loss and 1-500W power handling capability. They provide high-frequency, high-power signal protection solutions for applications such as power amplifier modules, radar, electronic warfare, and aviation navigation. The following analysis examines their engineering value from these three core technologies.
Core Technology 1: Wideband Coverage (0.02-40GHz) – Adapting to Multiple RF and Microwave Applications
Technical Description
- Wide frequency band: Frequency coverage from 0.02GHz to 40GHz
- Adapts to radar, communication, and electronic warfare systems in different frequency bands
- Supports customised frequency design
Engineering Value
- A single isolator can cover multiple frequency bands, reducing the variety of components within a system and the complexity of inventory management
- 40GHz coverage capability adapts to the requirements of millimetre-wave radar and wideband electronic warfare systems
- Wideband characteristics reduce engineers' debugging time on frequency matching
Typical Customer Issue: An electronic warfare system needs to cover multiple frequency bands, and conventional isolators require multiple devices of different models, increasing BOM and inventory management costs.
SHINHOM Corresponding Capability: The G series covers 0.02-40GHz, and the RF Isolators Circulators series covers 0.088-50GHz.
Core Technology 2: High Isolation (12-70dB) – Effectively Protecting Power Amplifier Modules and Sensitive Circuits
Technical Description
- High isolation: Isolation range 12-70dB
- Unidirectional transmission characteristics prevent reflected power from feeding back into the power amplifier output
- Protects the receiver front-end from transmitter signal leakage
Engineering Value
- In radar and electronic warfare systems, load mismatch at the power amplifier output generates reflected power, and high isolation effectively absorbs the reflected energy to protect the power amplifier transistors
- The receiver front-end requires sufficient isolation to prevent transmitter signal leakage, avoiding receiver saturation or damage
- High isolation combined with low insertion loss protects the circuit without affecting normal signal transmission
Typical Customer Issue: A radar power amplifier module suffered reflected power feeding back due to antenna port mismatch, causing successive burnout of power amplifier transistors.
SHINHOM Corresponding Capability: The G842A offers isolation of 23dB, and the RF Isolators Circulators series can achieve isolation up to 70dB.
Core Technology 3: Wide-Temperature Operation and High Reliability
Technical Description
- Operating temperature range: -55°C to +125°C
- Good temperature characteristics and vibration resistance
- Low intermodulation design reduces signal distortion
- RoHS compliant
Engineering Value
- Wide-temperature operation adapts to harsh environments such as aviation, aerospace, and outdoor radar
- Vibration resistance meets the vibration requirements of airborne and vehicle-mounted platforms
- Low intermodulation reduces signal distortion in multi-carrier systems, improving communication quality
- RoHS compliance meets global market access requirements
Typical Customer Issue: In airborne radar equipment operating at high altitude and low temperature, isolator performance degradation causes instability in the signal chain.
SHINHOM Corresponding Capability: The full product series supports -55°C to +125°C wide-temperature operation and features a low intermodulation design.
Ordinary Isolators vs SHINHOM Coaxial Isolators
| Comparison Dimension | Ordinary Isolator | SHINHOM Coaxial Isolator |
|---|---|---|
| Frequency coverage | Relatively narrow | 0.02-40GHz |
| Isolation | Relatively low | 12-70dB |
| Power handling | Limited | 1-500W |
| Operating temperature | Relatively narrow | -55°C to +125°C |
Application Matching
| Application Scenario | Core Requirements | How Coaxial Isolators Meet Them |
|---|---|---|
| Radar systems | High isolation, high power, wide temperature | 12-70dB isolation + 1-500W power + -55~+125°C wide temperature |
| Electronic warfare | Wideband, high power handling | 0.02-40GHz wideband + high-power design |
| Aviation navigation | Wide-temperature operation, high reliability | -55~+125°C + vibration-resistant design |
| Medical equipment | Low intermodulation, miniaturisation | Low IMD design + compact package |
| IoT smart identification | Wideband coverage, low cost | Wideband + RoHS compliant |
| Instruments and meters | Low insertion loss, stable performance | Low loss + wide-temperature stability |
| Broadcast television | High power, low intermodulation | High power handling + low IMD |
Why Choose SHINHOM's Coaxial Isolators?
SHINHOM's coaxial isolators have been mass-deployed in radar power amplifiers, electronic warfare, and satellite communication projects. The 0.02-40GHz wideband coverage and 12-70dB isolation have been verified through long-term field experience. With low insertion loss, low intermodulation design, and -55°C to +125°C wide-temperature operation, the product helps engineers ensure signal chain reliability in high-frequency, high-power scenarios.
Provide your frequency range, power level, and isolation requirements, and we will respond with selection recommendations and a sample support plan within 1 working day.
📧 Email: sales@shinhom.com
🌐 Website: www.shinhom.com/
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